Publicação: Estimation of variances of the effects of incomplete diallels using a matrix approach
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Data
2004-12-01
Orientador
Coorientador
Pós-graduação
Curso de graduação
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Tipo
Artigo
Direito de acesso
Acesso aberto
Resumo
A matrix approach is described for assessing the variance of effects in incomplete diallels designs. The method is illustrated by reference to simulated complete and incomplete diallels using different combinations of constraints, average degree of dominance and, for the incomplete diallel, number of hybrids. Our results showed that caution should be taken in working with incomplete diallels under conditions of overdominance because there were changes in the rank of the genotypes when the excluded hybrid had parents with a low frequency of the favorable allele (i.e. the allele which increases expression of a character). The expression described in this paper is a rapid and safe approach to estimate variances and covariances of the effects of contrasts of incomplete diallels. Copyright by the Brazilian Society of Genetics.
Descrição
Palavras-chave
General combining ability, Incomplete diallel, Specific combining ability, allele, analysis of covariance, analysis of variance, analytic method, analytical parameters, breeding method, controlled study, cross breeding, diallel analysis, gene expression, genotype, process model, statistical analysis
Idioma
Inglês
Como citar
Genetics and Molecular Biology, v. 27, n. 3, p. 409-417, 2004.
