Data/hora: 03/06/2024 16:45:09

Provedor de dados: | 74
País: | Brazil
Título: | Estimation of variances of the effects of incomplete diallels using a matrix approach
Autores: | Assis,Giselle Mariano Lessa de; Fonseca,Ricardo da; Cruz,Cosme Damião; Carneiro Júnior,José Marques.
Data: | 2004-01-01
Ano: | 2004
Palavras-chave: | Incomplete diallel; General combining ability; Specific combining ability.
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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000300017
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572004000300017
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.27 n.3 2004
Fonte: | info:eu-repo/semantics/openAccess