Genetic Diversity, Population Structure, and Heritability of Fruit Traits in Capsicum annuum.
Identifieur interne : 000C31 ( Main/Exploration ); précédent : 000C30; suivant : 000C32Genetic Diversity, Population Structure, and Heritability of Fruit Traits in Capsicum annuum.
Auteurs : Rachel P. Naegele [États-Unis] ; Jenna Mitchell [États-Unis] ; Mary K. Hausbeck [États-Unis]Source :
- PloS one [ 1932-6203 ] ; 2016.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- genetics : Capsicum, Fruit.
- Africa, Ecuador, Europe, Genetic Variation, Phenotype, Quantitative Trait Loci, Quantitative Trait, Heritable.
Abstract
Cultivated pepper (Capsicum annuum) is a phenotypically diverse species grown throughout the world. Wild and landrace peppers are typically small-fruited and pungent, but contain many important traits such as insect and disease resistance. Cultivated peppers vary dramatically in size, shape, pungency, and color, and often lack resistance traits. Fruit characteristics (e.g. shape and pericarp thickness) are major determinants for cultivar selection, and their association with disease susceptibility can reduce breeding efficacy. This study evaluated a diverse collection of peppers for mature fruit phenotypic traits, correlation among fruit traits and Phytophthora fruit rot resistance, genetic diversity, population structure, and trait broad sense heritability. Significant differences within all fruit phenotype categories were detected among pepper lines. Fruit from Europe had the thickest pericarp, and fruit from Ecuador had the thinnest. For fruit shape index, fruit from Africa had the highest index, while fruit from Europe had the lowest. Five genetic clusters were detected in the pepper population and were significantly associated with fruit thickness, end shape, and fruit shape index. The genetic differentiation between clusters ranged from little to very great differentiation when grouped by the predefined categories. Broad sense heritability for fruit traits ranged from 0.56 (shoulder height) to 0.98 (pericarp thickness). When correlations among fruit phenotypes and fruit disease were evaluated, fruit shape index was negatively correlated with pericarp thickness, and positively correlated with fruit perimeter. Pepper fruit pericarp, perimeter, and width had a slight positive correlation with Phytophthora fruit rot, whereas fruit shape index had a slight negative correlation.
DOI: 10.1371/journal.pone.0156969
PubMed: 27415818
PubMed Central: PMC4944943
Affiliations:
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Hausbeck</name><affiliation wicri:level="2"><nlm:affiliation>Department of Plant, Soil and Microbial Sciences, Michigan State University East Lansing, MI 48824, United States of America.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Plant, Soil and Microbial Sciences, Michigan State University East Lansing, MI 48824</wicri:regionArea><placeName><region type="state">Michigan</region></placeName></affiliation></author></analytic><series><title level="j">PloS one</title><idno type="eISSN">1932-6203</idno><imprint><date when="2016" type="published">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Africa (MeSH)</term><term>Capsicum (genetics)</term><term>Ecuador (MeSH)</term><term>Europe (MeSH)</term><term>Fruit (genetics)</term><term>Genetic Variation (MeSH)</term><term>Phenotype (MeSH)</term><term>Quantitative Trait Loci (MeSH)</term><term>Quantitative Trait, Heritable (MeSH)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Afrique (MeSH)</term><term>Capsicum (génétique)</term><term>Caractère quantitatif héréditaire (MeSH)</term><term>Europe (MeSH)</term><term>Fruit (génétique)</term><term>Locus de caractère quantitatif (MeSH)</term><term>Phénotype (MeSH)</term><term>Variation génétique (MeSH)</term><term>Équateur (MeSH)</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Capsicum</term><term>Fruit</term></keywords><keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Capsicum</term><term>Fruit</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Africa</term><term>Ecuador</term><term>Europe</term><term>Genetic Variation</term><term>Phenotype</term><term>Quantitative Trait Loci</term><term>Quantitative Trait, Heritable</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Afrique</term><term>Caractère quantitatif héréditaire</term><term>Europe</term><term>Locus de caractère quantitatif</term><term>Phénotype</term><term>Variation génétique</term><term>Équateur</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Cultivated pepper (Capsicum annuum) is a phenotypically diverse species grown throughout the world. Wild and landrace peppers are typically small-fruited and pungent, but contain many important traits such as insect and disease resistance. Cultivated peppers vary dramatically in size, shape, pungency, and color, and often lack resistance traits. Fruit characteristics (e.g. shape and pericarp thickness) are major determinants for cultivar selection, and their association with disease susceptibility can reduce breeding efficacy. This study evaluated a diverse collection of peppers for mature fruit phenotypic traits, correlation among fruit traits and Phytophthora fruit rot resistance, genetic diversity, population structure, and trait broad sense heritability. Significant differences within all fruit phenotype categories were detected among pepper lines. Fruit from Europe had the thickest pericarp, and fruit from Ecuador had the thinnest. For fruit shape index, fruit from Africa had the highest index, while fruit from Europe had the lowest. Five genetic clusters were detected in the pepper population and were significantly associated with fruit thickness, end shape, and fruit shape index. The genetic differentiation between clusters ranged from little to very great differentiation when grouped by the predefined categories. Broad sense heritability for fruit traits ranged from 0.56 (shoulder height) to 0.98 (pericarp thickness). When correlations among fruit phenotypes and fruit disease were evaluated, fruit shape index was negatively correlated with pericarp thickness, and positively correlated with fruit perimeter. Pepper fruit pericarp, perimeter, and width had a slight positive correlation with Phytophthora fruit rot, whereas fruit shape index had a slight negative correlation. </div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">27415818</PMID><DateCompleted><Year>2017</Year><Month>07</Month><Day>26</Day></DateCompleted><DateRevised><Year>2019</Year><Month>02</Month><Day>12</Day></DateRevised><Article PubModel="Electronic-eCollection"><Journal><ISSN IssnType="Electronic">1932-6203</ISSN><JournalIssue CitedMedium="Internet"><Volume>11</Volume><Issue>7</Issue><PubDate><Year>2016</Year></PubDate></JournalIssue><Title>PloS one</Title><ISOAbbreviation>PLoS One</ISOAbbreviation></Journal><ArticleTitle>Genetic Diversity, Population Structure, and Heritability of Fruit Traits in Capsicum annuum.</ArticleTitle><Pagination><MedlinePgn>e0156969</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1371/journal.pone.0156969</ELocationID><Abstract><AbstractText>Cultivated pepper (Capsicum annuum) is a phenotypically diverse species grown throughout the world. Wild and landrace peppers are typically small-fruited and pungent, but contain many important traits such as insect and disease resistance. Cultivated peppers vary dramatically in size, shape, pungency, and color, and often lack resistance traits. Fruit characteristics (e.g. shape and pericarp thickness) are major determinants for cultivar selection, and their association with disease susceptibility can reduce breeding efficacy. This study evaluated a diverse collection of peppers for mature fruit phenotypic traits, correlation among fruit traits and Phytophthora fruit rot resistance, genetic diversity, population structure, and trait broad sense heritability. Significant differences within all fruit phenotype categories were detected among pepper lines. Fruit from Europe had the thickest pericarp, and fruit from Ecuador had the thinnest. For fruit shape index, fruit from Africa had the highest index, while fruit from Europe had the lowest. Five genetic clusters were detected in the pepper population and were significantly associated with fruit thickness, end shape, and fruit shape index. The genetic differentiation between clusters ranged from little to very great differentiation when grouped by the predefined categories. Broad sense heritability for fruit traits ranged from 0.56 (shoulder height) to 0.98 (pericarp thickness). When correlations among fruit phenotypes and fruit disease were evaluated, fruit shape index was negatively correlated with pericarp thickness, and positively correlated with fruit perimeter. Pepper fruit pericarp, perimeter, and width had a slight positive correlation with Phytophthora fruit rot, whereas fruit shape index had a slight negative correlation. </AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Naegele</LastName><ForeName>Rachel P</ForeName><Initials>RP</Initials><AffiliationInfo><Affiliation>USDA, Agricultural Research Service, San Joaquin Valley Agricultural Sciences Center, 9611 South Riverbend Avenue, Parlier, CA, United States of America.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Mitchell</LastName><ForeName>Jenna</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>Department of Plant, Soil and Microbial Sciences, Michigan State University East Lansing, MI 48824, United States of America.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Hausbeck</LastName><ForeName>Mary K</ForeName><Initials>MK</Initials><AffiliationInfo><Affiliation>Department of Plant, Soil and Microbial Sciences, Michigan State University East Lansing, MI 48824, United States of America.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2016</Year><Month>07</Month><Day>14</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>PLoS One</MedlineTA><NlmUniqueID>101285081</NlmUniqueID><ISSNLinking>1932-6203</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000349" MajorTopicYN="N">Africa</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002212" MajorTopicYN="N">Capsicum</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D004484" MajorTopicYN="N">Ecuador</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005060" MajorTopicYN="N">Europe</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005638" MajorTopicYN="N">Fruit</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014644" MajorTopicYN="Y">Genetic Variation</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010641" MajorTopicYN="N">Phenotype</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D040641" MajorTopicYN="N">Quantitative Trait Loci</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D019655" MajorTopicYN="Y">Quantitative Trait, Heritable</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2016</Year><Month>02</Month><Day>05</Day></PubMedPubDate><PubMedPubDate 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Naegele</name></region><name sortKey="Hausbeck, Mary K" sort="Hausbeck, Mary K" uniqKey="Hausbeck M" first="Mary K" last="Hausbeck">Mary K. Hausbeck</name><name sortKey="Mitchell, Jenna" sort="Mitchell, Jenna" uniqKey="Mitchell J" first="Jenna" last="Mitchell">Jenna Mitchell</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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