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More about quantitative trait locus mapping with diallel designs

Published online by Cambridge University Press:  01 April 2000

AHMED REBAÏ
Affiliation:
INRA Centre de Toulouse, Unit of Biometry and Artificial Intelligence, BP 27, 31326 Castanet-Tolosan, France
BRUNO GOFFINET
Affiliation:
INRA Centre de Toulouse, Unit of Biometry and Artificial Intelligence, BP 27, 31326 Castanet-Tolosan, France
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Abstract

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We present a general regression-based method for mapping quantitative trait loci (QTL) by combining different populations derived from diallel designs. The model expresses, at any map position, the phenotypic value of each individual as a function of the specific-mean of the population to which the individual belongs, the additive and dominance effects of the alleles carried by the parents of that population and the probabilities of QTL genotypes conditional on those of neighbouring markers. Standard linear model procedures (ordinary or iteratively reweighted least-squares) are used for estimation and test of the parameters.

Type
Research Article
Copyright
© 2000 Cambridge University Press