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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/67992
Title: 
Estimation of variances of the effects of incomplete diallels using a matrix approach
Author(s): 
Institution: 
  • Universidade Federal de Viçosa (UFV)
  • Universidade Estadual Paulista (UNESP)
ISSN: 
  • 1415-4757
  • 1678-4685
Abstract: 
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.
Issue Date: 
1-Dec-2004
Citation: 
Genetics and Molecular Biology, v. 27, n. 3, p. 409-417, 2004.
Time Duration: 
409-417
Keywords: 
  • 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
Source: 
http://dx.doi.org/10.1590/S1415-47572004000300017
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/67992
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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