Development of synthetic maize populations for resistance to Striga hermonthica
Identifieur interne : 003B78 ( Main/Exploration ); précédent : 003B77; suivant : 003B79Development of synthetic maize populations for resistance to Striga hermonthica
Auteurs : S. K. Kim [Nigeria, Corée du Sud] ; J. M. Fajemisin ; C. Thé [Cameroun] ; A. Adepoju [Nigeria] ; J. Kling [Nigeria] ; B. Badu-Apraku ; M. Versteeg [Bénin] ; R. Carsky [Nigeria] ; S. T. O. Lagoke [Nigeria]Source :
- Plant Breeding [ 0179-9541 ] ; 1998-07.
English descriptors
- Teeft :
- Abuja, Artificial infestation, Cameroon, Central africa, Efron, Ferke, Government consultation, Grain colour, Grain yields, Hermonthica, Horizontal resistance, Host plant resistance, Hybrid, Ibadan, Iita, Inbred, Inbred lines, Infestation, Ivory coast, June, Lagoke, Maize, Maize plants, Maize streak virus, Millet, Mokwa, Musselman, Nigeria, Noninfested plots, Ofthe, Parasitic, Parasitic weeds, Proc, Random mating, Resistant, Resistant control, Sorghum, Striga, Striga control, Striga emergence counts, Striga hermonthica, Striga infestation, Striga plants, Striga rating, Striga resistance, Striga seeds, Susceptible controls, Synthetic maize populations, Synthetic populations, Yellow populations.
Abstract
The parasitic witchweed, Striga hermonthica (Del.) Benth, is the greatest biological constraint for cereal crop production by resource‐poor farmers in sub‐Saharan Africa. Maize, Zea mays L., is a widely grown cereal crop in this region (22 × 106 ha). Striga‐resistant maize populations were produced and tested as half‐sib families in West and Central Africa. Three populations with white (W), yellow (Y), or mixed (Y/W) grain colour were formed by: (1) intercrossing Striga resistant maize inbred lines followed by two generations of random mating; (2) testing far under artificially induced S. hermonthica infestations in Nigeria, Cameroon, and Ivory Coast and selection of resistant families; (3) two generations of random mating; and (4) two years of testing for resistance. Striga‐resistant synthetic W, Y and Y/W populations were produced by compositing resistant half‐sib families. Outstanding performance in grain yields and host plant resistance was observed. Maize damage ratings and number of harvested ears were highly correlated with grain yield. High variation was observed for Striga emergence counts. The populations have combined resistance to Striga, maize streak virus (MSV), and other major biotic constraints for maize cultivation in Africa, thus providing the opportunity for improved sustainable maize production under stress environments. Breeder's seed of these synthetic varieties are being multiplied for distribution to national programmes.
Url:
DOI: 10.1111/j.1439-0523.1998.tb01927.x
Affiliations:
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Badu-Apraku</name><affiliation><wicri:noCountry code="subField">Coast</wicri:noCountry></affiliation></author><author><name sortKey="Versteeg, M" sort="Versteeg, M" uniqKey="Versteeg M" first="M." last="Versteeg">M. Versteeg</name><affiliation wicri:level="1"><country xml:lang="fr">Bénin</country><wicri:regionArea>IITA Station, Cotonu</wicri:regionArea><wicri:noRegion>Cotonu</wicri:noRegion></affiliation></author><author><name sortKey="Carsky, R" sort="Carsky, R" uniqKey="Carsky R" first="R." last="Carsky">R. Carsky</name><affiliation wicri:level="1"><country xml:lang="fr">Nigeria</country><wicri:regionArea>IITA, PMB 5320, Ibadan</wicri:regionArea><wicri:noRegion>Ibadan</wicri:noRegion></affiliation></author><author><name sortKey="Lagoke, S T O" sort="Lagoke, S T O" uniqKey="Lagoke S" first="S. T. O." last="Lagoke">S. T. O. Lagoke</name><affiliation wicri:level="1"><country xml:lang="fr">Nigeria</country><wicri:regionArea>IAR, Ahamadu Bello University, Zaria</wicri:regionArea><wicri:noRegion>Zaria</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Plant Breeding</title><title level="j" type="alt">PLANT BREEDING</title><idno type="ISSN">0179-9541</idno><idno type="eISSN">1439-0523</idno><imprint><biblScope unit="vol">117</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="203">203</biblScope><biblScope unit="page" to="209">209</biblScope><biblScope unit="page-count">7</biblScope><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="1998-07">1998-07</date></imprint><idno type="ISSN">0179-9541</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0179-9541</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="Teeft" xml:lang="en"><term>Abuja</term><term>Artificial infestation</term><term>Cameroon</term><term>Central africa</term><term>Efron</term><term>Ferke</term><term>Government consultation</term><term>Grain colour</term><term>Grain yields</term><term>Hermonthica</term><term>Horizontal resistance</term><term>Host plant resistance</term><term>Hybrid</term><term>Ibadan</term><term>Iita</term><term>Inbred</term><term>Inbred lines</term><term>Infestation</term><term>Ivory coast</term><term>June</term><term>Lagoke</term><term>Maize</term><term>Maize plants</term><term>Maize streak virus</term><term>Millet</term><term>Mokwa</term><term>Musselman</term><term>Nigeria</term><term>Noninfested plots</term><term>Ofthe</term><term>Parasitic</term><term>Parasitic weeds</term><term>Proc</term><term>Random mating</term><term>Resistant</term><term>Resistant control</term><term>Sorghum</term><term>Striga</term><term>Striga control</term><term>Striga emergence counts</term><term>Striga hermonthica</term><term>Striga infestation</term><term>Striga plants</term><term>Striga rating</term><term>Striga resistance</term><term>Striga seeds</term><term>Susceptible controls</term><term>Synthetic maize populations</term><term>Synthetic populations</term><term>Yellow populations</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The parasitic witchweed, Striga hermonthica (Del.) Benth, is the greatest biological constraint for cereal crop production by resource‐poor farmers in sub‐Saharan Africa. Maize, Zea mays L., is a widely grown cereal crop in this region (22 × 106 ha). Striga‐resistant maize populations were produced and tested as half‐sib families in West and Central Africa. Three populations with white (W), yellow (Y), or mixed (Y/W) grain colour were formed by: (1) intercrossing Striga resistant maize inbred lines followed by two generations of random mating; (2) testing far under artificially induced S. hermonthica infestations in Nigeria, Cameroon, and Ivory Coast and selection of resistant families; (3) two generations of random mating; and (4) two years of testing for resistance. Striga‐resistant synthetic W, Y and Y/W populations were produced by compositing resistant half‐sib families. Outstanding performance in grain yields and host plant resistance was observed. Maize damage ratings and number of harvested ears were highly correlated with grain yield. High variation was observed for Striga emergence counts. The populations have combined resistance to Striga, maize streak virus (MSV), and other major biotic constraints for maize cultivation in Africa, thus providing the opportunity for improved sustainable maize production under stress environments. Breeder's seed of these synthetic varieties are being multiplied for distribution to national programmes.</div></front></TEI><affiliations><list><country><li>Bénin</li><li>Cameroun</li><li>Corée du Sud</li><li>Nigeria</li></country></list><tree><noCountry><name sortKey="Badu Praku, B" sort="Badu Praku, B" uniqKey="Badu Praku B" first="B." last="Badu-Apraku">B. Badu-Apraku</name><name sortKey="Fajemisin, J M" sort="Fajemisin, J M" uniqKey="Fajemisin J" first="J. M." last="Fajemisin">J. M. Fajemisin</name></noCountry><country name="Nigeria"><noRegion><name sortKey="Kim, S K" sort="Kim, S K" uniqKey="Kim S" first="S. K." last="Kim">S. K. Kim</name></noRegion><name sortKey="Adepoju, A" sort="Adepoju, A" uniqKey="Adepoju A" first="A." last="Adepoju">A. Adepoju</name><name sortKey="Carsky, R" sort="Carsky, R" uniqKey="Carsky R" first="R." last="Carsky">R. Carsky</name><name sortKey="Kling, J" sort="Kling, J" uniqKey="Kling J" first="J." last="Kling">J. Kling</name><name sortKey="Lagoke, S T O" sort="Lagoke, S T O" uniqKey="Lagoke S" first="S. T. O." last="Lagoke">S. T. O. Lagoke</name></country><country name="Corée du Sud"><noRegion><name sortKey="Kim, S K" sort="Kim, S K" uniqKey="Kim S" first="S. K." last="Kim">S. K. Kim</name></noRegion></country><country name="Cameroun"><noRegion><name sortKey="The, C" sort="The, C" uniqKey="The C" first="C." last="Thé">C. Thé</name></noRegion></country><country name="Bénin"><noRegion><name sortKey="Versteeg, M" sort="Versteeg, M" uniqKey="Versteeg M" first="M." last="Versteeg">M. Versteeg</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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