Sweet Potato Virus Disease in Sub‐Saharan Africa: Evidence that Neglect of Seedlings in the Traditional Farming System Hinders the Development of Superior Resistant Landraces
Identifieur interne : 000757 ( Istex/Corpus ); précédent : 000756; suivant : 000758Sweet Potato Virus Disease in Sub‐Saharan Africa: Evidence that Neglect of Seedlings in the Traditional Farming System Hinders the Development of Superior Resistant Landraces
Auteurs : R. W. Gibson ; S. C. Jeremiah ; V. Aritua ; R. P. Msabaha ; I. Mpembe ; J. NdunguruSource :
- Journal of Phytopathology [ 0931-1785 ] ; 2000-08.
English descriptors
- Teeft :
- Aritua, Bukoba, Cassava, Control spvd, Cultivar, Democratic republic, East africa, High incidences, Kagera district, Lake victoria, Landraces, Late yields, Mpigi, Mpigi district, Mwanga, Mwanza, Potato, Resistant landraces, Resistant varieties, Rukungiri, Rukungiri district, Seedling, Soroti, Soroti district, Spcsv, Spcsv spfmv, Spfmv, Spvd, Sweet potato, Sweet potato farmers, Sweet potato seedlings, Sweet potato virus disease, Symptomless parents, Tanzania, Traditional farming system, Uganda.
Abstract
Sweet potato virus disease (SPVD) occurs in sweet potato at all localities on the perimeter of Lake Victoria areas surveyed in Uganda and Tanzania, and was particularly common in Kagera District in Tanzania and in Rukungiri District in Uganda. All fields were planted with landraces and the most important control practices, as perceived by farmers, were the planting of cuttings derived from only symptomless parents and destroying diseased plants. Although SPVD‐resistant landraces were available, they were perceived by most farmers to have poor and late yields. Most farmers considered that their greatest need was new, more acceptable, SPVD‐resistant genotypes. Few farmers had seen either sweet potato seeds (15%) or sweet potato seedlings (11%) and, of those that had, most had ignored them. The lack of seedlings and their neglect by farmers is likely to be hindering the evolution of more acceptable, SPVD‐resistant landraces, and is probably responsible for SPVD being a long‐term disease problem.
Die Viruskrankheit der Süikartoffel (SPVD) trat in Uganda und Tansania an allen untersuchten Standorten in der Umgebung des Victoriasees auf. Besonders häufig war sie im tansanischen Kagera‐Distrikt und im ugandischen Rukungiri‐Distrikt. Alle Felder waren mit Landsorten bestellt, und die Landwirte sahen es als wichtigste Bekämpfungsmainahmen an, nur Stecklinge von symptomfreien Elternpflanzen zu setzen und erkrankte Pflanzen zu entfernen. Gegen SPVD resistente Landsorten waren zwar erhältlich, doch die meisten Landwirte gaben an, diese würden besonders schlechte und späte Erträge liefern. Die meisten Landwirte meinten, dai sie am dringlichsten neue, verbesserte SPVD‐resistente Genotypen benötigen. Nur 15% der Landwirte hatten Samen der Süikartoffel gesehen, und nur 11% Sämlinge. Die meisten dieser Landwirte hatten den Samen bzw. Sämlingen zudem keine Beachtung geschenkt. Der Mangel an Sämlingen und ihre fehlende Beachtung durch die Landwirte behindern die Entwicklung verbesserter SPVD‐resistenter Landsorten und sind damit vermutlich der Grund dafür, dai SPVD ein langfristiges Krankheitsproblem darstellt.
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DOI: 10.1046/j.1439-0434.2000.00529.x
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ISTEX:471700CB54F5D86610C70B3266E6DBE5D803F24FLe document en format XML
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W." last="Gibson">R. W. Gibson</name><affiliation><mods:affiliation>Authors' addresses: Natural Resources Institute, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK;</mods:affiliation></affiliation></author><author><name sortKey="Jeremiah, S C" sort="Jeremiah, S C" uniqKey="Jeremiah S" first="S. C." last="Jeremiah">S. C. Jeremiah</name><affiliation><mods:affiliation>ARI‐Ukiriguru, PO Box, 1433, Mwanza, Tanzania;</mods:affiliation></affiliation></author><author><name sortKey="Aritua, V" sort="Aritua, V" uniqKey="Aritua V" first="V." last="Aritua">V. Aritua</name><affiliation><mods:affiliation>Namulonge Agricultural and Animal Production ResearchInstitute, PO Box 7084, Kampala, Uganda;</mods:affiliation></affiliation></author><author><name sortKey="Msabaha, R P" sort="Msabaha, R P" uniqKey="Msabaha R" first="R. P." last="Msabaha">R. P. 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Gibson)</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Journal of Phytopathology</title><title level="j" type="alt">JOURNAL OF PHYTOPATHOLOGY</title><idno type="ISSN">0931-1785</idno><idno type="eISSN">1439-0434</idno><imprint><biblScope unit="vol">148</biblScope><biblScope unit="issue">7‐8</biblScope><biblScope unit="page" from="441">441</biblScope><biblScope unit="page" to="447">447</biblScope><publisher>Blackwell Science, Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2000-08">2000-08</date></imprint><idno type="ISSN">0931-1785</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0931-1785</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="Teeft" xml:lang="en"><term>Aritua</term><term>Bukoba</term><term>Cassava</term><term>Control spvd</term><term>Cultivar</term><term>Democratic republic</term><term>East africa</term><term>High incidences</term><term>Kagera district</term><term>Lake victoria</term><term>Landraces</term><term>Late yields</term><term>Mpigi</term><term>Mpigi district</term><term>Mwanga</term><term>Mwanza</term><term>Potato</term><term>Resistant landraces</term><term>Resistant varieties</term><term>Rukungiri</term><term>Rukungiri district</term><term>Seedling</term><term>Soroti</term><term>Soroti district</term><term>Spcsv</term><term>Spcsv spfmv</term><term>Spfmv</term><term>Spvd</term><term>Sweet potato</term><term>Sweet potato farmers</term><term>Sweet potato seedlings</term><term>Sweet potato virus disease</term><term>Symptomless parents</term><term>Tanzania</term><term>Traditional farming system</term><term>Uganda</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Sweet potato virus disease (SPVD) occurs in sweet potato at all localities on the perimeter of Lake Victoria areas surveyed in Uganda and Tanzania, and was particularly common in Kagera District in Tanzania and in Rukungiri District in Uganda. All fields were planted with landraces and the most important control practices, as perceived by farmers, were the planting of cuttings derived from only symptomless parents and destroying diseased plants. Although SPVD‐resistant landraces were available, they were perceived by most farmers to have poor and late yields. Most farmers considered that their greatest need was new, more acceptable, SPVD‐resistant genotypes. Few farmers had seen either sweet potato seeds (15%) or sweet potato seedlings (11%) and, of those that had, most had ignored them. The lack of seedlings and their neglect by farmers is likely to be hindering the evolution of more acceptable, SPVD‐resistant landraces, and is probably responsible for SPVD being a long‐term disease problem.</div><div type="abstract" xml:lang="de">Die Viruskrankheit der Süikartoffel (SPVD) trat in Uganda und Tansania an allen untersuchten Standorten in der Umgebung des Victoriasees auf. Besonders häufig war sie im tansanischen Kagera‐Distrikt und im ugandischen Rukungiri‐Distrikt. Alle Felder waren mit Landsorten bestellt, und die Landwirte sahen es als wichtigste Bekämpfungsmainahmen an, nur Stecklinge von symptomfreien Elternpflanzen zu setzen und erkrankte Pflanzen zu entfernen. Gegen SPVD resistente Landsorten waren zwar erhältlich, doch die meisten Landwirte gaben an, diese würden besonders schlechte und späte Erträge liefern. Die meisten Landwirte meinten, dai sie am dringlichsten neue, verbesserte SPVD‐resistente Genotypen benötigen. Nur 15% der Landwirte hatten Samen der Süikartoffel gesehen, und nur 11% Sämlinge. Die meisten dieser Landwirte hatten den Samen bzw. Sämlingen zudem keine Beachtung geschenkt. Der Mangel an Sämlingen und ihre fehlende Beachtung durch die Landwirte behindern die Entwicklung verbesserter SPVD‐resistenter Landsorten und sind damit vermutlich der Grund dafür, dai SPVD ein langfristiges Krankheitsproblem darstellt.</div></front></TEI><istex><corpusName>wiley</corpusName><keywords><teeft><json:string>uganda</json:string><json:string>spvd</json:string><json:string>sweet potato</json:string><json:string>landraces</json:string><json:string>seedling</json:string><json:string>tanzania</json:string><json:string>rukungiri</json:string><json:string>spcsv</json:string><json:string>cultivar</json:string><json:string>east africa</json:string><json:string>aritua</json:string><json:string>cassava</json:string><json:string>mpigi</json:string><json:string>spfmv</json:string><json:string>soroti</json:string><json:string>sweet potato virus disease</json:string><json:string>mwanza</json:string><json:string>bukoba</json:string><json:string>mwanga</json:string><json:string>sweet potato seedlings</json:string><json:string>resistant landraces</json:string><json:string>lake victoria</json:string><json:string>mpigi district</json:string><json:string>soroti district</json:string><json:string>sweet potato farmers</json:string><json:string>traditional farming system</json:string><json:string>high incidences</json:string><json:string>spcsv spfmv</json:string><json:string>rukungiri district</json:string><json:string>symptomless parents</json:string><json:string>late yields</json:string><json:string>resistant varieties</json:string><json:string>kagera district</json:string><json:string>control spvd</json:string><json:string>democratic republic</json:string><json:string>potato</json:string></teeft></keywords><author><json:item><name>R. 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All fields were planted with landraces and the most important control practices, as perceived by farmers, were the planting of cuttings derived from only symptomless parents and destroying diseased plants. Although SPVD‐resistant landraces were available, they were perceived by most farmers to have poor and late yields. Most farmers considered that their greatest need was new, more acceptable, SPVD‐resistant genotypes. Few farmers had seen either sweet potato seeds (15%) or sweet potato seedlings (11%) and, of those that had, most had ignored them. 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Sub‐Saharan Africa: Evidence that Neglect of Seedlings in the Traditional Farming System Hinders the Development of Superior Resistant Landraces Viruskrankheit der SüIkartoffel in Afrika südlich der Sahara: Hinweise darauf, daI die mangelnde Beachtung der Sämlinge im traditionellen Anbausystem ein Hindernis für die Entwicklung verbesserter Landsorten darstellt</title><title level="a" type="short">G
ibson et al.</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Blackwell Science, Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2000-08"></date></publicationStmt><notesStmt><note type="content-type" subtype="article" source="article" scheme="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</note><note type="publication-type" subtype="journal" scheme="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</note></notesStmt><sourceDesc><biblStruct type="article"><analytic><title level="a" type="main">Sweet Potato Virus Disease in Sub‐Saharan Africa: Evidence that Neglect of Seedlings in the Traditional Farming System Hinders the Development of Superior Resistant Landraces Viruskrankheit der SüIkartoffel in Afrika südlich der Sahara: Hinweise darauf, daI die mangelnde Beachtung der Sämlinge im traditionellen Anbausystem ein Hindernis für die Entwicklung verbesserter Landsorten darstellt</title><title level="a" type="short">G
ibson et al.</title><author xml:id="author-0000"><persName><forename type="first">R. W.</forename><surname>Gibson</surname></persName><affiliation><orgName type="institution">Authors' addresses: Natural Resources Institute</orgName><orgName type="institution">University of Greenwich</orgName><address><addrLine>Central Avenue</addrLine><addrLine>Chatham Maritime, Kent, ME4 4TB, UK;</addrLine></address></affiliation></author><author xml:id="author-0001"><persName><forename type="first">S. C.</forename><surname>Jeremiah</surname></persName><affiliation><address><addrLine>ARI‐Ukiriguru</addrLine><addrLine>PO Box, 1433, Mwanza, Tanzania;</addrLine></address></affiliation></author><author xml:id="author-0002"><persName><forename type="first">V.</forename><surname>Aritua</surname></persName><affiliation><orgName type="institution">Namulonge Agricultural and Animal Production ResearchInstitute</orgName><address><addrLine>PO Box 7084</addrLine><addrLine>Kampala, Uganda;</addrLine><country key="UG" xml:lang="en">UGANDA</country></address></affiliation></author><author xml:id="author-0003"><persName><forename type="first">R. P.</forename><surname>Msabaha</surname></persName><affiliation><address><addrLine>ARI‐Ukiriguru</addrLine><addrLine>PO Box, 1433, Mwanza, Tanzania;</addrLine></address></affiliation></author><author xml:id="author-0004"><persName><forename type="first">I.</forename><surname>Mpembe</surname></persName><affiliation><orgName type="institution">Namulonge Agricultural and Animal Production ResearchInstitute</orgName><address><addrLine>PO Box 7084</addrLine><addrLine>Kampala, Uganda;</addrLine><country key="UG" xml:lang="en">UGANDA</country></address></affiliation></author><author xml:id="author-0005"><persName><forename type="first">J.</forename><surname>Ndunguru</surname></persName><affiliation><address><addrLine>ARI‐Muruku</addrLine><addrLine>PO Box 127, Bukoba, Tanzania (correspondence to R. W. Gibson)</addrLine></address></affiliation></author><idno type="istex">471700CB54F5D86610C70B3266E6DBE5D803F24F</idno><idno type="ark">ark:/67375/WNG-9ZK5TC83-P</idno><idno type="DOI">10.1046/j.1439-0434.2000.00529.x</idno><idno type="unit">JPH529</idno><idno type="toTypesetVersion">file:JPH.JPH529.pdf</idno></analytic><monogr><title level="j" type="main">Journal of Phytopathology</title><title level="j" type="alt">JOURNAL OF PHYTOPATHOLOGY</title><idno type="pISSN">0931-1785</idno><idno type="eISSN">1439-0434</idno><idno type="book-DOI">10.1111/(ISSN)1439-0434</idno><idno type="book-part-DOI">10.1111/jph.2000.148.issue-7-8</idno><idno type="product">JPH</idno><idno type="publisherDivision">ST</idno><imprint><biblScope unit="vol">148</biblScope><biblScope unit="issue">7‐8</biblScope><biblScope unit="page" from="441">441</biblScope><biblScope unit="page" to="447">447</biblScope><publisher>Blackwell Science, Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2000-08"></date></imprint></monogr></biblStruct></sourceDesc></fileDesc><encodingDesc><schemaRef type="ODD" url="https://xml-schema.delivery.istex.fr/tei-istex.odd"></schemaRef><appInfo><application ident="pub2tei" version="1.0.10" when="2019-12-20"><label>pub2TEI-ISTEX</label><desc>A set of style sheets for converting XML documents encoded in various scientific publisher formats into a common TEI format.
<ref target="http://www.tei-c.org/">We use TEI</ref></desc></application></appInfo></encodingDesc><profileDesc><abstract xml:lang="en" style="main"><p>Sweet potato virus disease (SPVD) occurs in sweet potato at all localities on the perimeter of Lake Victoria areas surveyed in Uganda and Tanzania, and was particularly common in Kagera District in Tanzania and in Rukungiri District in Uganda. All fields were planted with landraces and the most important control practices, as perceived by farmers, were the planting of cuttings derived from only symptomless parents and destroying diseased plants. Although SPVD‐resistant landraces were available, they were perceived by most farmers to have poor and late yields. Most farmers considered that their greatest need was new, more acceptable, SPVD‐resistant genotypes. Few farmers had seen either sweet potato seeds (15%) or sweet potato seedlings (11%) and, of those that had, most had ignored them. The lack of seedlings and their neglect by farmers is likely to be hindering the evolution of more acceptable, SPVD‐resistant landraces, and is probably responsible for SPVD being a long‐term disease problem.</p></abstract><abstract xml:lang="de" style="main"><head>Zusammenfassung</head><p>Die Viruskrankheit der Süikartoffel (SPVD) trat in Uganda und Tansania an allen untersuchten Standorten in der Umgebung des Victoriasees auf. Besonders häufig war sie im tansanischen Kagera‐Distrikt und im ugandischen Rukungiri‐Distrikt. Alle Felder waren mit Landsorten bestellt, und die Landwirte sahen es als wichtigste Bekämpfungsmainahmen an, nur Stecklinge von symptomfreien Elternpflanzen zu setzen und erkrankte Pflanzen zu entfernen. Gegen SPVD resistente Landsorten waren zwar erhältlich, doch die meisten Landwirte gaben an, diese würden besonders schlechte und späte Erträge liefern. Die meisten Landwirte meinten, dai sie am dringlichsten neue, verbesserte SPVD‐resistente Genotypen benötigen. Nur 15% der Landwirte hatten Samen der Süikartoffel gesehen, und nur 11% Sämlinge. Die meisten dieser Landwirte hatten den Samen bzw. Sämlingen zudem keine Beachtung geschenkt. Der Mangel an Sämlingen und ihre fehlende Beachtung durch die Landwirte behindern die Entwicklung verbesserter SPVD‐resistenter Landsorten und sind damit vermutlich der Grund dafür, dai SPVD ein langfristiges Krankheitsproblem darstellt.</p></abstract><textClass><keywords xml:lang="en"><term xml:id="k1">Sweet potato</term><term xml:id="k2">landraces</term><term xml:id="k3">seedlings</term><term xml:id="k4">resistance</term><term xml:id="k5">virus disease</term></keywords><keywords rend="tocHeading1"><term>Original Articles</term></keywords></textClass><langUsage><language ident="en"></language></langUsage></profileDesc><revisionDesc><change when="2019-12-20" who="#istex" xml:id="pub2tei">formatting</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/ark:/67375/WNG-9ZK5TC83-P/fulltext.txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Blackwell Science, Ltd</publisherName><publisherLoc>Oxford, UK</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1439-0434</doi><issn type="print">0931-1785</issn><issn type="electronic">1439-0434</issn><idGroup><id type="product" value="JPH"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="JOURNAL OF PHYTOPATHOLOGY">Journal of Phytopathology</title></titleGroup></publicationMeta><publicationMeta level="part" position="08007"><doi origin="wiley">10.1111/jph.2000.148.issue-7-8</doi><numberingGroup><numbering type="journalVolume" number="148">148</numbering><numbering type="journalIssue">7‐8</numbering></numberingGroup><coverDate startDate="2000-08">August 2000</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="0044100" status="forIssue"><doi origin="wiley">10.1046/j.1439-0434.2000.00529.x</doi><idGroup><id type="unit" value="JPH529"></id></idGroup><titleGroup><title type="tocHeading1">Original Articles</title></titleGroup><eventGroup><event type="firstOnline" date="2003-12-11"></event><event type="publishedOnlineFinalForm" date="2003-12-11"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.3.4 mode:FullText source:FullText result:FullText" date="2010-03-30"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:4.0.1" date="2014-03-20"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-30"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="441">441</numbering><numbering type="pageLast" number="447">447</numbering></numberingGroup><correspondenceTo>Pest Management Department, Natural Resources Institute, University of Greenwich, UK</correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:JPH.JPH529.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>Received August 27, 1999; accepted February 5, 2000</unparsedEditorialHistory><countGroup><count type="figureTotal" number="0"></count><count type="tableTotal" number="0"></count><count type="formulaTotal" number="0"></count><count type="referenceTotal" number="34"></count><count type="wordTotal" number="4174"></count><count type="linksPubMed" number="0"></count><count type="linksCrossRef" number="0"></count></countGroup><titleGroup><title type="main">Sweet Potato Virus Disease in Sub‐Saharan Africa: Evidence that Neglect of Seedlings in the Traditional Farming System Hinders the Development of Superior Resistant Landraces</title><title type="shortAuthors">Sweet Potato Virus Disease in Sub‐Saharan Africa</title><title type="short"><i>G</i><sc>ibson</sc> et al<i>.</i></title><title type="main" xml:lang="de"><!--xml:lang="de" added by WileyML 3Gv2 convertor--><b>Viruskrankheit der SüIkartoffel in Afrika südlich der Sahara: Hinweise darauf, daI die mangelnde Beachtung der Sämlinge im traditionellen Anbausystem ein Hindernis für die Entwicklung verbesserter Landsorten darstellt</b></title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1"><personName><givenNames>R. W.</givenNames><familyName>Gibson</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a2"><personName><givenNames>S. C.</givenNames><familyName>Jeremiah</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a3"><personName><givenNames>V.</givenNames><familyName>Aritua</familyName></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#a2"><personName><givenNames>R. P.</givenNames><familyName>Msabaha</familyName></personName></creator><creator creatorRole="author" xml:id="cr5" affiliationRef="#a3"><personName><givenNames>I.</givenNames><familyName>Mpembe</familyName></personName></creator><creator creatorRole="author" xml:id="cr6" affiliationRef="#a4"><personName><givenNames>J.</givenNames><familyName>Ndunguru</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1"><unparsedAffiliation>Authors' addresses: Natural Resources Institute, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK;</unparsedAffiliation></affiliation><affiliation xml:id="a2"><unparsedAffiliation>ARI‐Ukiriguru, PO Box, 1433, Mwanza, Tanzania;</unparsedAffiliation></affiliation><affiliation xml:id="a3" countryCode="UG"><unparsedAffiliation>Namulonge Agricultural and Animal Production ResearchInstitute, PO Box 7084, Kampala, Uganda;</unparsedAffiliation></affiliation><affiliation xml:id="a4"><unparsedAffiliation>ARI‐Muruku, PO Box 127, Bukoba, Tanzania (correspondence to R. W. Gibson)</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1">Sweet potato</keyword><keyword xml:id="k2">landraces</keyword><keyword xml:id="k3">seedlings</keyword><keyword xml:id="k4">resistance</keyword><keyword xml:id="k5">virus disease</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><p>Sweet potato virus disease (SPVD) occurs in sweet potato at all localities on the perimeter of Lake Victoria areas surveyed in Uganda and Tanzania, and was particularly common in Kagera District in Tanzania and in Rukungiri District in Uganda. All fields were planted with landraces and the most important control practices, as perceived by farmers, were the planting of cuttings derived from only symptomless parents and destroying diseased plants. Although SPVD‐resistant landraces were available, they were perceived by most farmers to have poor and late yields. Most farmers considered that their greatest need was new, more acceptable, SPVD‐resistant genotypes. Few farmers had seen either sweet potato seeds (15%) or sweet potato seedlings (11%) and, of those that had, most had ignored them. The lack of seedlings and their neglect by farmers is likely to be hindering the evolution of more acceptable, SPVD‐resistant landraces, and is probably responsible for SPVD being a long‐term disease problem.</p></abstract><abstract type="main" xml:lang="de"><title type="main">Zusammenfassung</title><p>Die Viruskrankheit der Süikartoffel (SPVD) trat in Uganda und Tansania an allen untersuchten Standorten in der Umgebung des Victoriasees auf. Besonders häufig war sie im tansanischen Kagera‐Distrikt und im ugandischen Rukungiri‐Distrikt. Alle Felder waren mit Landsorten bestellt, und die Landwirte sahen es als wichtigste Bekämpfungsmainahmen an, nur Stecklinge von symptomfreien Elternpflanzen zu setzen und erkrankte Pflanzen zu entfernen. Gegen SPVD resistente Landsorten waren zwar erhältlich, doch die meisten Landwirte gaben an, diese würden besonders schlechte und späte Erträge liefern. Die meisten Landwirte meinten, dai sie am dringlichsten neue, verbesserte SPVD‐resistente Genotypen benötigen. Nur 15% der Landwirte hatten Samen der Süikartoffel gesehen, und nur 11% Sämlinge. Die meisten dieser Landwirte hatten den Samen bzw. Sämlingen zudem keine Beachtung geschenkt. Der Mangel an Sämlingen und ihre fehlende Beachtung durch die Landwirte behindern die Entwicklung verbesserter SPVD‐resistenter Landsorten und sind damit vermutlich der Grund dafür, dai SPVD ein langfristiges Krankheitsproblem darstellt.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Sweet Potato Virus Disease in Sub‐Saharan Africa: Evidence that Neglect of Seedlings in the Traditional Farming System Hinders the Development of Superior Resistant Landraces</title></titleInfo><titleInfo lang="de"><title>Viruskrankheit der SüIkartoffel in Afrika südlich der Sahara: Hinweise darauf, daI die mangelnde Beachtung der Sämlinge im traditionellen Anbausystem ein Hindernis für die Entwicklung verbesserter Landsorten darstellt</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>G ibson et al.</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Sweet Potato Virus Disease in Sub‐Saharan Africa: Evidence that Neglect of Seedlings in the Traditional Farming System Hinders the Development of Superior Resistant Landraces</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="de"><title>Viruskrankheit der SüIkartoffel in Afrika südlich der Sahara: Hinweise darauf, daI die mangelnde Beachtung der Sämlinge im traditionellen Anbausystem ein Hindernis für die Entwicklung verbesserter Landsorten darstellt</title></titleInfo><name type="personal"><namePart type="given">R. W.</namePart><namePart type="family">Gibson</namePart><affiliation>Authors' addresses: Natural Resources Institute, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK;</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">S. C.</namePart><namePart type="family">Jeremiah</namePart><affiliation>ARI‐Ukiriguru, PO Box, 1433, Mwanza, Tanzania;</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">V.</namePart><namePart type="family">Aritua</namePart><affiliation>Namulonge Agricultural and Animal Production ResearchInstitute, PO Box 7084, Kampala, Uganda;</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">R. P.</namePart><namePart type="family">Msabaha</namePart><affiliation>ARI‐Ukiriguru, PO Box, 1433, Mwanza, Tanzania;</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">I.</namePart><namePart type="family">Mpembe</namePart><affiliation>Namulonge Agricultural and Animal Production ResearchInstitute, PO Box 7084, Kampala, Uganda;</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.</namePart><namePart type="family">Ndunguru</namePart><affiliation>ARI‐Muruku, PO Box 127, Bukoba, Tanzania (correspondence to R. W. Gibson)</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</genre><originInfo><publisher>Blackwell Science, Ltd</publisher><place><placeTerm type="text">Oxford, UK</placeTerm></place><dateIssued encoding="w3cdtf">2000-08</dateIssued><edition>Received August 27, 1999; accepted February 5, 2000</edition><copyrightDate encoding="w3cdtf">2000</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><extent unit="figures">0</extent><extent unit="tables">0</extent><extent unit="formulas">0</extent><extent unit="references">34</extent><extent unit="linksCrossRef">0</extent><extent unit="words">4174</extent></physicalDescription><abstract lang="en">Sweet potato virus disease (SPVD) occurs in sweet potato at all localities on the perimeter of Lake Victoria areas surveyed in Uganda and Tanzania, and was particularly common in Kagera District in Tanzania and in Rukungiri District in Uganda. All fields were planted with landraces and the most important control practices, as perceived by farmers, were the planting of cuttings derived from only symptomless parents and destroying diseased plants. Although SPVD‐resistant landraces were available, they were perceived by most farmers to have poor and late yields. Most farmers considered that their greatest need was new, more acceptable, SPVD‐resistant genotypes. Few farmers had seen either sweet potato seeds (15%) or sweet potato seedlings (11%) and, of those that had, most had ignored them. The lack of seedlings and their neglect by farmers is likely to be hindering the evolution of more acceptable, SPVD‐resistant landraces, and is probably responsible for SPVD being a long‐term disease problem.</abstract><abstract lang="de">Die Viruskrankheit der Süikartoffel (SPVD) trat in Uganda und Tansania an allen untersuchten Standorten in der Umgebung des Victoriasees auf. Besonders häufig war sie im tansanischen Kagera‐Distrikt und im ugandischen Rukungiri‐Distrikt. Alle Felder waren mit Landsorten bestellt, und die Landwirte sahen es als wichtigste Bekämpfungsmainahmen an, nur Stecklinge von symptomfreien Elternpflanzen zu setzen und erkrankte Pflanzen zu entfernen. Gegen SPVD resistente Landsorten waren zwar erhältlich, doch die meisten Landwirte gaben an, diese würden besonders schlechte und späte Erträge liefern. Die meisten Landwirte meinten, dai sie am dringlichsten neue, verbesserte SPVD‐resistente Genotypen benötigen. Nur 15% der Landwirte hatten Samen der Süikartoffel gesehen, und nur 11% Sämlinge. Die meisten dieser Landwirte hatten den Samen bzw. Sämlingen zudem keine Beachtung geschenkt. Der Mangel an Sämlingen und ihre fehlende Beachtung durch die Landwirte behindern die Entwicklung verbesserter SPVD‐resistenter Landsorten und sind damit vermutlich der Grund dafür, dai SPVD ein langfristiges Krankheitsproblem darstellt.</abstract><subject lang="en"><genre>keywords</genre><topic>Sweet potato</topic><topic>landraces</topic><topic>seedlings</topic><topic>resistance</topic><topic>virus disease</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Phytopathology</title></titleInfo><genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre><identifier type="ISSN">0931-1785</identifier><identifier type="eISSN">1439-0434</identifier><identifier type="DOI">10.1111/(ISSN)1439-0434</identifier><identifier type="PublisherID">JPH</identifier><part><date>2000</date><detail type="volume"><caption>vol.</caption><number>148</number></detail><detail type="issue"><caption>no.</caption><number>7‐8</number></detail><extent unit="pages"><start>441</start><end>447</end></extent></part></relatedItem><relatedItem type="references" displayLabel="cit1"><titleInfo><title>The sweetpotato crop in Uganda</title></titleInfo><name type="personal"><namePart type="given">D. T. A.</namePart><namePart type="family">Aldrich</namePart><role><roleTerm type="text">author</roleTerm></role></name><genre>journal-article</genre><note type="citation/reference">Aldrich, D. T. A. 1963 The sweetpotato crop in Uganda. E. Afr. Agric. For. J., 29, 42–49.</note><part><date>1963</date><detail type="volume"><caption>vol.</caption><number>29</number></detail><extent unit="pages"><start>42</start><end>49</end></extent></part><relatedItem type="host"><titleInfo><title>E. Afr. Agric. For. J.</title></titleInfo><part><date>1963</date><detail type="volume"><caption>vol.</caption><number>29</number></detail><extent unit="pages"><start>42</start><end>49</end></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit2"><titleInfo><title>Anonymous1993 Uganda Agriculture: A World Bank Country Study. The World Bank, Washington, USA.</title></titleInfo><name type="corporate"><namePart>Anonymous</namePart></name><genre>other</genre><part><date>1993</date></part></relatedItem><relatedItem type="references" displayLabel="cit3"><titleInfo><title>The incidence of sweet potato virus disease and virus resistance of sweet potato grown in Uganda</title></titleInfo><name type="personal"><namePart type="given">V.</namePart><namePart type="family">Aritua</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">E.</namePart><namePart type="family">Adipala</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">R. W.</namePart><namePart type="family">Carey</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="corporate"><namePart>Gibson</namePart></name><genre>journal-article</genre><note type="citation/reference">Aritua, V., E. Adipala, Carey, R. W. & Gibson 1998 The incidence of sweet potato virus disease and virus resistance of sweet potato grown in Uganda. Ann. Appl. Biol., 132, 399–411.</note><part><date>1998</date><detail type="volume"><caption>vol.</caption><number>132</number></detail><extent unit="pages"><start>399</start><end>411</end></extent></part><relatedItem type="host"><titleInfo><title>Ann. Appl. Biol.</title></titleInfo><part><date>1998</date><detail type="volume"><caption>vol.</caption><number>132</number></detail><extent unit="pages"><start>399</start><end>411</end></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit4"><titleInfo><title>Effect of local inoculum on the spread of sweet potato virus disease: widespread cultivation of a resistant sweet potato cultivar may be protecting susceptible cultivars</title></titleInfo><name type="personal"><namePart type="given">V.</namePart><namePart type="family">Aritua</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J. P.</namePart><namePart type="family">Legg</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">R. W.</namePart><namePart type="family">Smit</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="corporate"><namePart>Gibson</namePart></name><genre>journal-article</genre><note type="citation/reference">Aritua, V., J. P. Legg, Smit, R. W. & Gibson 1999 Effect of local inoculum on the spread of sweet potato virus disease: widespread cultivation of a resistant sweet potato cultivar may be protecting susceptible cultivars. Plant Pathol., 48, 655–661.</note><part><date>1999</date><detail type="volume"><caption>vol.</caption><number>48</number></detail><extent unit="pages"><start>655</start><end>661</end></extent></part><relatedItem type="host"><titleInfo><title>Plant Pathol.</title></titleInfo><part><date>1999</date><detail type="volume"><caption>vol.</caption><number>48</number></detail><extent unit="pages"><start>655</start><end>661</end></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit5"><titleInfo><title>Bashaasha, B., R. O. M. Mwanga, Ocitti p'Obwoya, P. T. & Ewell1995 Sweet Potato in the Farming and Food Systems of Uganda: a Farm Survey Report. CIP, Sub‐Saharan Africa Region, Nairobi, Kenya and National Agricultural Research Organization, Kampala, Uganda.</title></titleInfo><name type="corporate"><namePart>Ewell</namePart></name><genre>other</genre><part><date>1995</date></part></relatedItem><relatedItem type="references" displayLabel="cit6"><titleInfo><title>Better cultivars for resource‐poor farmers</title></titleInfo><name type="corporate"><namePart>Buddenhagen</namePart></name><genre>book-chapter</genre><relatedItem type="host"><titleInfo><title>Proc. Semin. Crop Protection for Resource‐Poor Farmers</title></titleInfo><originInfo><publisher>CTA</publisher></originInfo><part><date>1992</date><extent unit="pages"><start>83</start><end>94</end></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit7"><titleInfo><title>Breeding strategies for stress and disease resistance in developing countries</title></titleInfo><name type="personal"><namePart type="given">I. W.</namePart><namePart type="family">Buddenhagen</namePart><role><roleTerm type="text">author</roleTerm></role></name><genre>journal-article</genre><note type="citation/reference">Buddenhagen, I. W. 1983 Breeding strategies for stress and disease resistance in developing countries. Ann. Rev. Phytopathol., 21, 385–409.</note><part><date>1983</date><detail type="volume"><caption>vol.</caption><number>21</number></detail><extent unit="pages"><start>385</start><end>409</end></extent></part><relatedItem type="host"><titleInfo><title>Ann. Rev. Phytopathol.</title></titleInfo><part><date>1983</date><detail type="volume"><caption>vol.</caption><number>21</number></detail><extent unit="pages"><start>385</start><end>409</end></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit8"><titleInfo><title>Etiology of sweet potato russet crack disease</title></titleInfo><name type="personal"><namePart type="given">R. N.</namePart><namePart type="family">Campbell</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">D. H.</namePart><namePart type="family">Hall</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="corporate"><namePart>Mielinis</namePart></name><genre>journal-article</genre><note type="citation/reference">Campbell, R. N., D. H. Hall, & Mielinis 1974 Etiology of sweet potato russet crack disease. Phytopathology., 64, 210–218.</note><part><date>1974</date><detail type="volume"><caption>vol.</caption><number>64</number></detail><extent unit="pages"><start>210</start><end>218</end></extent></part><relatedItem type="host"><titleInfo><title>Phytopathology.</title></titleInfo><part><date>1974</date><detail type="volume"><caption>vol.</caption><number>64</number></detail><extent unit="pages"><start>210</start><end>218</end></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit9"><titleInfo><title>Circum‐Pacific distribution of the sweet potato (Ipomoea batatas)</title></titleInfo><name type="personal"><namePart type="given">T.</namePart><namePart type="family">Dening</namePart><role><roleTerm type="text">author</roleTerm></role></name><genre>journal-article</genre><note type="citation/reference">Dening, T. 1999 Circum‐Pacific distribution of the sweet potato (Ipomoea batatas). Trop Assoc Newsletter UK, 19, 39.</note><part><date>1999</date><detail type="volume"><caption>vol.</caption><number>19</number></detail><extent unit="pages"><start>39</start></extent></part><relatedItem type="host"><titleInfo><title>Trop Assoc Newsletter UK</title></titleInfo><part><date>1999</date><detail type="volume"><caption>vol.</caption><number>19</number></detail><extent unit="pages"><start>39</start></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit10"><titleInfo><title>Dunbar, A. R. 1969 The Annual Crops of Uganda. East African Literature Bureau, Kampala, Uganda.</title></titleInfo><genre>other</genre><part><date>1969</date></part></relatedItem><relatedItem type="references" displayLabel="cit11"><titleInfo><title>FAO1998 Food and Agriculture Organization of the United Nations. Production Yearbook, 50, 91–92. FAO, Rome.</title></titleInfo><name type="corporate"><namePart>FAO</namePart></name><genre>other</genre><part><date>1998</date></part></relatedItem><relatedItem type="references" displayLabel="cit12"><titleInfo><title>Geddes, A. M. W. 1990 The Relative Importance of Crop Pests in Sub‐Saharan Africa. Natural Resources Institute Bull, no. 36. NRI, Kent, UK.</title></titleInfo><genre>other</genre><originInfo><publisher>Resources Institute</publisher></originInfo><part><date>1990</date></part></relatedItem><relatedItem type="references" displayLabel="cit13"><titleInfo><title>Identification of the East African stain of sweet potato chlorotic stunt virus as a major component of sweet potato virus disease in southern Africa</title></titleInfo><name type="personal"><namePart type="given">R. W.</namePart><namePart type="family">Gibson</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">G. C.</namePart><namePart type="family">Kaitisha</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">H. J.</namePart><namePart type="family">Randrianaivoarivony</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="corporate"><namePart>Vetten</namePart></name><genre>journal-article</genre><note type="citation/reference">Gibson, R. W., G. C. Kaitisha, Randrianaivoarivony, H. J. & Vetten 1998a Identification of the East African stain of sweet potato chlorotic stunt virus as a major component of sweet potato virus disease in southern Africa. Plant Dis., 82, 1063.</note><part><date>1998</date><detail type="volume"><caption>vol.</caption><number>82</number></detail><extent unit="pages"><start>1063</start></extent></part><relatedItem type="host"><titleInfo><title>Plant Dis.</title></titleInfo><part><date>1998</date><detail type="volume"><caption>vol.</caption><number>82</number></detail><extent unit="pages"><start>1063</start></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit14"><titleInfo><title>Symptoms, aetiology and serological analysis of sweet potato virus disease in Uganda</title></titleInfo><name type="personal"><namePart type="given">R. W.</namePart><namePart type="family">Gibson</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">I.</namePart><namePart type="family">Mpembe</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">E. E.</namePart><namePart type="family">Alicai</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">R. O. M.</namePart><namePart type="family">Carey</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">S. E.</namePart><namePart type="family">Mwanga</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">H. J.</namePart><namePart type="family">Seal</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="corporate"><namePart>Vetten</namePart></name><genre>journal-article</genre><note type="citation/reference">Gibson, R. W., I. Mpembe, Alicai, E. E., Carey, R. O. M., Mwanga, S. E., Seal, H. J. & Vetten 1998b Symptoms, aetiology and serological analysis of sweet potato virus disease in Uganda. Plant Pathol., 47, 95–102.</note><part><date>1998</date><detail type="volume"><caption>vol.</caption><number>47</number></detail><extent unit="pages"><start>95</start><end>102</end></extent></part><relatedItem type="host"><titleInfo><title>Plant Pathol.</title></titleInfo><part><date>1998</date><detail type="volume"><caption>vol.</caption><number>47</number></detail><extent unit="pages"><start>95</start><end>102</end></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit15"><titleInfo><title>Apparent absence of viruses in most symptomless field‐grown sweet potato in Uganda</title></titleInfo><name type="personal"><namePart type="given">R. W.</namePart><namePart type="family">Gibson</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">R. O. M.</namePart><namePart type="family">Mwanga</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">I.</namePart><namePart type="family">Kasule</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">E. E.</namePart><namePart type="family">Mpembe</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="corporate"><namePart>Carey</namePart></name><genre>journal-article</genre><note type="citation/reference">Gibson, R. W., R. O. M. Mwanga, Kasule, I., Mpembe, E. E. & Carey 1997 Apparent absence of viruses in most symptomless field‐grown sweet potato in Uganda. Ann. Appl. Biol., 132, 481–490.</note><part><date>1997</date><detail type="volume"><caption>vol.</caption><number>132</number></detail><extent unit="pages"><start>481</start><end>490</end></extent></part><relatedItem type="host"><titleInfo><title>Ann. Appl. Biol.</title></titleInfo><part><date>1997</date><detail type="volume"><caption>vol.</caption><number>132</number></detail><extent unit="pages"><start>481</start><end>490</end></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit16"><titleInfo><title>A probable virus disease of sweet potato</title></titleInfo><name type="personal"><namePart type="given">C. G.</namePart><namePart type="family">Hansford</namePart><role><roleTerm type="text">author</roleTerm></role></name><genre>journal-article</genre><note type="citation/reference">Hansford, C. G. 1944 A probable virus disease of sweet potato. E. Afr. Agric. For. J., 19, 126–127.</note><part><date>1944</date><detail type="volume"><caption>vol.</caption><number>19</number></detail><extent unit="pages"><start>126</start><end>127</end></extent></part><relatedItem type="host"><titleInfo><title>E. Afr. Agric. For. J.</title></titleInfo><part><date>1944</date><detail type="volume"><caption>vol.</caption><number>19</number></detail><extent unit="pages"><start>126</start><end>127</end></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit17"><titleInfo><title>Status of sweet potato cultivation in East Africa and its future</title></titleInfo><name type="personal"><namePart type="given">R. K.</namePart><namePart type="family">Jana</namePart><role><roleTerm type="text">author</roleTerm></role></name><genre>book-chapter</genre><relatedItem type="host"><titleInfo><title>Proc. First Int. Conference: Sweet Potato: AVRDC, Shinhua, Taiwan</title></titleInfo><originInfo><publisher>Publisher</publisher></originInfo><part><date>1982</date><extent unit="pages"><start>63</start><end>72</end></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit18"><titleInfo><title>Flowering and fertility of some South African sweet potato cultivars</title></titleInfo><name type="personal"><namePart type="given">E. E.</namePart><namePart type="family">Kanju</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">S.</namePart><namePart type="family">Laurie</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">C.</namePart><namePart type="family">Van Carey</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="corporate"><namePart>Deventer</namePart></name><genre>book-chapter</genre><relatedItem type="host"><titleInfo><title>Proc. Sci. Workshop. Southern African Root Crops Research Network, Lusaka, Zambia</title></titleInfo><originInfo><publisher>August, 1998</publisher></originInfo><part><date>1999</date><extent unit="pages"><start>17–19</start></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit19"><titleInfo><title>Kapinga, R. E., P. T. Ewell, Jeremiah, R. & Kileo1995 Sweet Potatoes in Tanzanian Farming and Food Systems: Implications for Research. CIP, Sub‐Saharan Africa Region, Nairobi, Kenya and Ministry of Agriculture, Dar‐Es‐Salaam, Tanzania.</title></titleInfo><name type="corporate"><namePart>Kileo</namePart></name><genre>other</genre><part><date>1995</date></part></relatedItem><relatedItem type="references" displayLabel="cit20"><titleInfo><title>The significance of sweet potato feathery mottle virus in subsistence sweet potato production in Africa</title></titleInfo><name type="personal"><namePart type="given">R. W.</namePart><namePart type="family">Karyeija</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J. P. T.</namePart><namePart type="family">Gibson</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">I. W.</namePart><namePart type="family">Valkonen</namePart><role><roleTerm type="text">author</roleTerm></role></name><genre>journal-article</genre><note type="citation/reference">Karyeija, R. W., Gibson, J. P. T. & Valkonen, I. W. 1998 The significance of sweet potato feathery mottle virus in subsistence sweet potato production in Africa. Plant Dis., 82, 4–15.</note><part><date>1998</date><detail type="volume"><caption>vol.</caption><number>82</number></detail><extent unit="pages"><start>4</start><end>15</end></extent></part><relatedItem type="host"><titleInfo><title>Plant Dis.</title></titleInfo><part><date>1998</date><detail type="volume"><caption>vol.</caption><number>82</number></detail><extent unit="pages"><start>4</start><end>15</end></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit21"><titleInfo><title>Emergence, spread and strategies for controlling the pandemic of cassava mosaic virus disease in east and central Africa</title></titleInfo><name type="personal"><namePart type="given">J. P.</namePart><namePart type="family">Legg</namePart><role><roleTerm type="text">author</roleTerm></role></name><genre>journal-article</genre><note type="citation/reference">Legg, J. P. 2000 Emergence, spread and strategies for controlling the pandemic of cassava mosaic virus disease in east and central Africa. Crop Prot., 18, 627–637.</note><part><date>2000</date><detail type="volume"><caption>vol.</caption><number>18</number></detail><extent unit="pages"><start>627</start><end>637</end></extent></part><relatedItem type="host"><titleInfo><title>Crop Prot.</title></titleInfo><part><date>2000</date><detail type="volume"><caption>vol.</caption><number>18</number></detail><extent unit="pages"><start>627</start><end>637</end></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit22"><titleInfo><title>McMaster, D. N. 1962 A Subsistence Crop Geography of Uganda.Geographical Publications Limited.Bude, Cornwall, UK.</title></titleInfo><note type="citation/reference">McMaster, D. N. 1962 A Subsistence Crop Geography of Uganda. Geographical Publications Limited. Bude, Cornwall, UK.</note><name type="personal"><namePart type="given">D. N.</namePart><namePart type="family">McMaster</namePart><role><roleTerm type="text">author</roleTerm></role></name><genre>book</genre><originInfo><publisher>Geographical Publications Limited.</publisher></originInfo><part><date>1962</date></part></relatedItem><relatedItem type="references" displayLabel="cit23"><titleInfo><title>Effects of mosaic on the yield of sweet potatoes</title></titleInfo><name type="personal"><namePart type="given">J.</namePart><namePart type="family">Mukiibi</namePart><role><roleTerm type="text">author</roleTerm></role></name><genre>book-chapter</genre><relatedItem type="host"><titleInfo><title>Proceedings of the 4th Int Soc. Tropical Root Crops. CIAT, Cali, Columbia</title></titleInfo><originInfo><publisher>Centro International de Agricultura Tropical (CIAT)</publisher></originInfo><part><date>1977</date><extent unit="pages"><start>169</start><end>170</end></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit24"><titleInfo><title>Mwanga, R. O. M., B. Odongo, Smit, C., Ocitti p'Obwoya, R. W. & Gibson1995 Submission to the Variety Release Committee for Release of Sweet Potato Varieties. The Ugandan Ministry of Agriculture, Animal Industries & Fisheries. Application for inclusion of a crop/variety in the National Cultivar List No F00009. Ministry of Agriculture, Animal Industries and Fisheries, Entebbe, Uganda.</title></titleInfo><name type="corporate"><namePart>Gibson</namePart></name><genre>other</genre><part><date>1995</date></part></relatedItem><relatedItem type="references" displayLabel="cit25"><titleInfo><title>National sweet potato research programme activities and progress in Uganda</title></titleInfo><name type="personal"><namePart type="given">R. O. M.T.</namePart><namePart type="family">Mwanga</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="corporate"><namePart>Sengooba.</namePart></name><genre>book-chapter</genre><relatedItem type="host"><titleInfo><title>Proc. Regional Sweet Potato Workshop, Libreville, Gabon 9–13 January, 1996</title></titleInfo><originInfo><publisher>University of Gemblouse</publisher></originInfo><part><date>1996</date><extent unit="pages"><start>73</start><end>86</end></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit26"><titleInfo><title>First report of sweet potato virus disease‐associated closterovirus in Brazil</title></titleInfo><name type="personal"><namePart type="given">G.</namePart><namePart type="family">Pio‐Ribiero</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">S.</namePart><namePart type="family">Winter</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="corporate"><namePart>Hamilton</namePart></name><genre>journal-article</genre><note type="citation/reference">Pio‐Ribiero, G., S. Winter, & Hamilton 1994 First report of sweet potato virus disease‐associated closterovirus in Brazil. Plant Dis., 78, 1122.</note><part><date>1994</date><detail type="volume"><caption>vol.</caption><number>78</number></detail><extent unit="pages"><start>1122</start></extent></part><relatedItem type="host"><titleInfo><title>Plant Dis.</title></titleInfo><part><date>1994</date><detail type="volume"><caption>vol.</caption><number>78</number></detail><extent unit="pages"><start>1122</start></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit27"><titleInfo><title>Russell, G. E. 1978 Plant Breeding for Pest and Disease Resistance.Butterworths.London, UK.</title></titleInfo><note type="citation/reference">Russell, G. E. 1978 Plant Breeding for Pest and Disease Resistance. Butterworths. London, UK.</note><name type="personal"><namePart type="given">G. E.</namePart><namePart type="family">Russell</namePart><role><roleTerm type="text">author</roleTerm></role></name><genre>book</genre><originInfo><publisher>Butterworths.</publisher></originInfo><part><date>1978</date></part></relatedItem><relatedItem type="references" displayLabel="cit28"><titleInfo><title>Insect transmission of sweet potato disease agents in Nigeria</title></titleInfo><name type="personal"><namePart type="given">G. A.</namePart><namePart type="family">Schaefers</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">E. R.</namePart><namePart type="family">Terry</namePart><role><roleTerm type="text">author</roleTerm></role></name><genre>journal-article</genre><note type="citation/reference">Schaefers, G. A. & E. R. Terry 1976 Insect transmission of sweet potato disease agents in Nigeria. Phytopathology, 66, 642–645.</note><part><date>1976</date><detail type="volume"><caption>vol.</caption><number>66</number></detail><extent unit="pages"><start>642</start><end>645</end></extent></part><relatedItem type="host"><titleInfo><title>Phytopathology</title></titleInfo><part><date>1976</date><detail type="volume"><caption>vol.</caption><number>66</number></detail><extent unit="pages"><start>642</start><end>645</end></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit29"><titleInfo><title>Virus diseases of sweet potato in parts of Africa</title></titleInfo><name type="personal"><namePart type="given">F. M. L.</namePart><namePart type="family">Sheffield</namePart><role><roleTerm type="text">author</roleTerm></role></name><genre>journal-article</genre><note type="citation/reference">Sheffield, F. M. L. 1953 Virus diseases of sweet potato in parts of Africa. Emp. J. Exp. Agric., 21, 184–189.</note><part><date>1953</date><detail type="volume"><caption>vol.</caption><number>21</number></detail><extent unit="pages"><start>184</start><end>189</end></extent></part><relatedItem type="host"><titleInfo><title>Emp. J. Exp. Agric.</title></titleInfo><part><date>1953</date><detail type="volume"><caption>vol.</caption><number>21</number></detail><extent unit="pages"><start>184</start><end>189</end></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit30"><titleInfo><title>The sweet potato</title></titleInfo><name type="personal"><namePart type="given">N. W.</namePart><namePart type="family">Simmonds</namePart><role><roleTerm type="text">author</roleTerm></role></name><genre>journal-article</genre><note type="citation/reference">Simmonds, N. W. 1999 The sweet potato. Trop Assoc Newsletter UK, 19, 6.</note><part><date>1999</date><detail type="volume"><caption>vol.</caption><number>19</number></detail><extent unit="pages"><start>6</start></extent></part><relatedItem type="host"><titleInfo><title>Trop Assoc Newsletter UK</title></titleInfo><part><date>1999</date><detail type="volume"><caption>vol.</caption><number>19</number></detail><extent unit="pages"><start>6</start></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit31"><titleInfo><title>Sweet potato and cassava in the Kwazulu Natal Province of South Africa: a baseline study</title></titleInfo><name type="personal"><namePart type="given">G. J.</namePart><namePart type="family">Thompson</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">A.</namePart><namePart type="family">Van Der Mescht</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">A. H.</namePart><namePart type="family">Naudé</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">E.</namePart><namePart type="family">Thompson</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">P.</namePart><namePart type="family">Nuitjen</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="corporate"><namePart>Lubout</namePart></name><genre>book-chapter</genre><relatedItem type="host"><titleInfo><title>Proc. Sci. Workshop Southern African Root Crops Research Network (SARRNET), Lusaka, Zambia</title></titleInfo><originInfo><publisher>August, 1998</publisher></originInfo><part><date>1999</date><extent unit="pages"><start>17–19</start></extent></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit32"><titleInfo><title>Seeds of Choice</title></titleInfo><name type="personal"><namePart type="given">J. R.</namePart><namePart type="family">Witcombe</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">D. S.</namePart><namePart type="family">Virk</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="corporate"><namePart>Farrington</namePart></name><genre>book-chapter</genre><relatedItem type="host"><titleInfo><title>Making the Most of New Varieties for Small Farmers.</title></titleInfo><originInfo><publisher>Oxford & IBH Publishing Co.</publisher></originInfo><part><date>1998</date></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit33"><titleInfo><title>The Sweet Potato and Oceania: an Essay in Ethnobotany</title></titleInfo><name type="personal"><namePart type="given">D. E.</namePart><namePart type="family">Yen</namePart><role><roleTerm type="text">author</roleTerm></role></name><genre>book-chapter</genre><relatedItem type="host"><titleInfo><title>Bernice P. Bishop Museum Bulletin No 236.</title></titleInfo><originInfo><publisher>Bishop Museum Press.</publisher></originInfo><part><date>1974</date></part></relatedItem></relatedItem><relatedItem type="references" displayLabel="cit34"><titleInfo><title>Evidence that the DNA‐A of a geminivirus associated with severe cassava mosaic disease in Uganda has arisen by interspecific recombination</title></titleInfo><name type="personal"><namePart type="given">X.</namePart><namePart type="family">Zhou</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Y.</namePart><namePart type="family">Liu</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">C.</namePart><namePart type="family">Calvert</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">G. W.</namePart><namePart type="family">Munoz</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">D. J.</namePart><namePart type="family">Otim‐Nape</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">B. D.</namePart><namePart type="family">Robinson</namePart><role><roleTerm type="text">author</roleTerm></role></name><name type="corporate"><namePart>Harrison</namePart></name><genre>journal-article</genre><note type="citation/reference">Zhou, X., Y. Liu, Calvert, C., Munoz, G. W., Otim‐Nape, D. J., Robinson, B. D. & Harrison 1997 Evidence that the DNA‐A of a geminivirus associated with severe cassava mosaic disease in Uganda has arisen by interspecific recombination. J. Gen. Virol., 78, 2101–2111.</note><part><date>1997</date><detail type="volume"><caption>vol.</caption><number>78</number></detail><extent unit="pages"><start>2101</start><end>2111</end></extent></part><relatedItem type="host"><titleInfo><title>J. Gen. Virol.</title></titleInfo><part><date>1997</date><detail type="volume"><caption>vol.</caption><number>78</number></detail><extent unit="pages"><start>2101</start><end>2111</end></extent></part></relatedItem></relatedItem><identifier type="istex">471700CB54F5D86610C70B3266E6DBE5D803F24F</identifier><identifier type="ark">ark:/67375/WNG-9ZK5TC83-P</identifier><identifier type="DOI">10.1046/j.1439-0434.2000.00529.x</identifier><identifier type="ArticleID">JPH529</identifier><accessCondition type="use and reproduction" contentType="copyright">© Wiley. All rights reserved.</accessCondition><recordInfo><recordContentSource authority="ISTEX" authorityURI="https://loaded-corpus.data.istex.fr" valueURI="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-L0C46X92-X">wiley</recordContentSource><recordOrigin>Converted from (version ) to MODS version 3.6.</recordOrigin><recordCreationDate encoding="w3cdtf">2019-11-15</recordCreationDate></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/ark:/67375/WNG-9ZK5TC83-P/record.json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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