The Analysis of Variance of Diallel Tables

A diallel cross is the set of n2 possible single crosses and selfs between n homozygous (inbred) lines; it provides a powerful method of investigating the relative genetical properties of these lines. A diallel table is a set of n2 measurements associated with a diallel cross, e.g. measurements from the progeny of a diallel cross, or from later generations obtained by selfing or backerossing these progeny. A summary of a method of describing the genetical situation generating a diallel table has already appeared (Jinks and Hayman, 1953) aild fuller accounts will appear in papers by Jinks and by Hayman. Here an analysis of variance is described which tests additive and dominance effects in diallel tables obtained from the progeny of a diallel cross.