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Doubled haploids for estimating genetic variances in presence of linkage and gene association

✍ Scribed by T. M. Choo; E. Reinbergs

Publisher: Springer
Year: 1979
Tongue: English
Weight: 337 KB
Volume: 55
Category: Article
ISSN: 0040-5752
DOI: 10.1007/bf00295438

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✦ Synopsis

The effect of gene association (or dispersion) and linkage on the estimation of genetic variances in a diallel experiment involving doubled haploid lines is evaluated. It is shown that the estimates of the additive and the additive X additive genetic variances, as obtained by Choo et al. (1979), are biased if genes are linked or are not independently distributed in the parents. However, this bias only occurs in the presence of interaction between homozygous loci. Gene association (or dispersion) and linkage, if present, can be detected by comparing the parental vs the crosses mean, the parental vs the doubled haploid lines variance, and the among vs the within crosses variance.

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