Genetic variability in common wheat germplasm based on coefficients of parentage

Detalhes bibliográficos
Autor(a) principal: Bered,Fernanda
Data de Publicação: 2002
Outros Autores: Barbosa-Neto,José F., Carvalho,Fernando I.F. de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Genetics and Molecular Biology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000200015
Resumo: The characterization of genetic variability and an estimate of the genetic relationship among varieties are essential to any breeding program, because artificial crosses among less similar parents allow a larger segregation and the combination of different favorable alleles. Genetic variability can be evaluated in different ways, including the Coefficient of Parentage (COP), which estimates the probability of two alleles in two different individuals being identical by descent. In this study, we evaluated the degree of genetic relationship among 53 wheat genotypes, and identified the ancestor genotypes which contributed the most to the current wheat germplasm, as a prediction of the width of the genetic base of this cereal. The results revealed a mean COP of 0.07 and the formation of 22 similarity groups. The ancestor genotypes Ciano 67 and Mentana were those which contributed the most to the current wheat germplasm. According to the COP analyses, the genetic base of wheat rests on a small number of ancestral genotypes.
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spelling Genetic variability in common wheat germplasm based on coefficients of parentageCOPgenetic basegene poolTriticum aestivum LThe characterization of genetic variability and an estimate of the genetic relationship among varieties are essential to any breeding program, because artificial crosses among less similar parents allow a larger segregation and the combination of different favorable alleles. Genetic variability can be evaluated in different ways, including the Coefficient of Parentage (COP), which estimates the probability of two alleles in two different individuals being identical by descent. In this study, we evaluated the degree of genetic relationship among 53 wheat genotypes, and identified the ancestor genotypes which contributed the most to the current wheat germplasm, as a prediction of the width of the genetic base of this cereal. The results revealed a mean COP of 0.07 and the formation of 22 similarity groups. The ancestor genotypes Ciano 67 and Mentana were those which contributed the most to the current wheat germplasm. According to the COP analyses, the genetic base of wheat rests on a small number of ancestral genotypes.Sociedade Brasileira de Genética2002-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000200015Genetics and Molecular Biology v.25 n.2 2002reponame:Genetics and Molecular Biologyinstname:Sociedade Brasileira de Genética (SBG)instacron:SBG10.1590/S1415-47572002000200015info:eu-repo/semantics/openAccessBered,FernandaBarbosa-Neto,José F.Carvalho,Fernando I.F. deeng2002-09-11T00:00:00Zoai:scielo:S1415-47572002000200015Revistahttp://www.gmb.org.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||editor@gmb.org.br1678-46851415-4757opendoar:2002-09-11T00:00Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)false
dc.title.none.fl_str_mv Genetic variability in common wheat germplasm based on coefficients of parentage
title Genetic variability in common wheat germplasm based on coefficients of parentage
spellingShingle Genetic variability in common wheat germplasm based on coefficients of parentage
Bered,Fernanda
COP
genetic base
gene pool
Triticum aestivum L
title_short Genetic variability in common wheat germplasm based on coefficients of parentage
title_full Genetic variability in common wheat germplasm based on coefficients of parentage
title_fullStr Genetic variability in common wheat germplasm based on coefficients of parentage
title_full_unstemmed Genetic variability in common wheat germplasm based on coefficients of parentage
title_sort Genetic variability in common wheat germplasm based on coefficients of parentage
author Bered,Fernanda
author_facet Bered,Fernanda
Barbosa-Neto,José F.
Carvalho,Fernando I.F. de
author_role author
author2 Barbosa-Neto,José F.
Carvalho,Fernando I.F. de
author2_role author
author
dc.contributor.author.fl_str_mv Bered,Fernanda
Barbosa-Neto,José F.
Carvalho,Fernando I.F. de
dc.subject.por.fl_str_mv COP
genetic base
gene pool
Triticum aestivum L
topic COP
genetic base
gene pool
Triticum aestivum L
description The characterization of genetic variability and an estimate of the genetic relationship among varieties are essential to any breeding program, because artificial crosses among less similar parents allow a larger segregation and the combination of different favorable alleles. Genetic variability can be evaluated in different ways, including the Coefficient of Parentage (COP), which estimates the probability of two alleles in two different individuals being identical by descent. In this study, we evaluated the degree of genetic relationship among 53 wheat genotypes, and identified the ancestor genotypes which contributed the most to the current wheat germplasm, as a prediction of the width of the genetic base of this cereal. The results revealed a mean COP of 0.07 and the formation of 22 similarity groups. The ancestor genotypes Ciano 67 and Mentana were those which contributed the most to the current wheat germplasm. According to the COP analyses, the genetic base of wheat rests on a small number of ancestral genotypes.
publishDate 2002
dc.date.none.fl_str_mv 2002-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000200015
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000200015
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1415-47572002000200015
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Genética
publisher.none.fl_str_mv Sociedade Brasileira de Genética
dc.source.none.fl_str_mv Genetics and Molecular Biology v.25 n.2 2002
reponame:Genetics and Molecular Biology
instname:Sociedade Brasileira de Genética (SBG)
instacron:SBG
instname_str Sociedade Brasileira de Genética (SBG)
instacron_str SBG
institution SBG
reponame_str Genetics and Molecular Biology
collection Genetics and Molecular Biology
repository.name.fl_str_mv Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)
repository.mail.fl_str_mv ||editor@gmb.org.br
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