Genetic variability in common wheat germplasm based on coefficients of parentage
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/23351 |
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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Bered, FernandaBarbosa Neto, Jose FernandesCarvalho, Fernando Iraja Felix de2010-06-05T04:17:17Z20021415-4757http://hdl.handle.net/10183/23351000331302The 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.application/pdfengGenetics and molecular biology. Ribeirão Preto. Vol. 25, no. 2 (June 2002), p. 211-215Genética vegetalCOPGenetic baseGene poolTriticum aestivum L.Genetic variability in common wheat germplasm based on coefficients of parentageinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000331302.pdf000331302.pdfTexto completo (inglês)application/pdf238576http://www.lume.ufrgs.br/bitstream/10183/23351/1/000331302.pdf86aabfb5ccbbd51c75fda24e92202a5fMD51TEXT000331302.pdf.txt000331302.pdf.txtExtracted Texttext/plain17816http://www.lume.ufrgs.br/bitstream/10183/23351/2/000331302.pdf.txt0b2060b848430405d2eeeb58bf9c7704MD52THUMBNAIL000331302.pdf.jpg000331302.pdf.jpgGenerated Thumbnailimage/jpeg1898http://www.lume.ufrgs.br/bitstream/10183/23351/3/000331302.pdf.jpg149baed566606a26211be7dd56916ff4MD5310183/233512018-10-11 08:26:47.319oai:www.lume.ufrgs.br:10183/23351Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-11T11:26:47Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.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 Genética vegetal 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, Jose Fernandes Carvalho, Fernando Iraja Felix de |
author_role |
author |
author2 |
Barbosa Neto, Jose Fernandes Carvalho, Fernando Iraja Felix de |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Bered, Fernanda Barbosa Neto, Jose Fernandes Carvalho, Fernando Iraja Felix de |
dc.subject.por.fl_str_mv |
Genética vegetal |
topic |
Genética vegetal COP Genetic base Gene pool Triticum aestivum L. |
dc.subject.eng.fl_str_mv |
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.issued.fl_str_mv |
2002 |
dc.date.accessioned.fl_str_mv |
2010-06-05T04:17:17Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/23351 |
dc.identifier.issn.pt_BR.fl_str_mv |
1415-4757 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000331302 |
identifier_str_mv |
1415-4757 000331302 |
url |
http://hdl.handle.net/10183/23351 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Genetics and molecular biology. Ribeirão Preto. Vol. 25, no. 2 (June 2002), p. 211-215 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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UFRGS |
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Repositório Institucional da UFRGS |
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Repositório Institucional da UFRGS |
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