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ARS Home » Midwest Area » Ames, Iowa » Corn Insects and Crop Genetics Research » Research » Publications at this Location » Publication #108725
Title: BREEDING VALUES, DOMINANCE DEVIATIONS, AND GENOTYPIC VALUES OF INBRED INDIVIDUALS AND THEIR IMPLICATIONS FOR BREEDING AND SELECTION

Author
item EDWARDS, J - MONSANTO COMPANY
item Lamkey, Kendall

Submitted to: American Society of Agronomy Meetings
Publication Type: Abstract Only
Publication Acceptance Date: 1/5/2000
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Genotypic variance-covariance parameters for inbred relatives have been defined as variances and covariances of unobservable functions of alleles in populations. We relate the parameters in the model to variances and covariances of observable quantities describing variances and covariances of inbred individuals in the same way additive and dominance variances have ebeen related to variances of breeding values and dominance deviations of noninbred individuals. We demonstrate that D(@2) is the variance of dominance deviations of inbred (F=1) individuals, and hence has the same interpretation as dominance variance does for noninbred individuals (F=0). A similar interpretation of D(@1) is presented. These interpretations of D(@1) and D(@2) provide some insight into the effects of inbred progeny selection on inbreeding depression rates and population means.