| Registro completo |
| Provedor de dados: |
Genet. Mol. Biol.
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| País: |
Brazil
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| Título: |
Genetic variability in common wheat germplasm based on coefficients of parentage
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| Autores: |
Bered,Fernanda
Barbosa-Neto,José F.
Carvalho,Fernando I.F. de
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| Data: |
2002-01-01
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| Ano: |
2002
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| Palavras-chave: |
COP
Genetic base
Gene pool
Triticum aestivum L
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| 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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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000200015
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| Editor: |
Sociedade Brasileira de Genética
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| Relação: |
10.1590/S1415-47572002000200015
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| Formato: |
text/html
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| Fonte: |
Genetics and Molecular Biology v.25 n.2 2002
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| Direitos: |
info:eu-repo/semantics/openAccess
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