Abstract
The genetical expectations of mean and variance for a quantitative character of populations of lines produced by diploidising haploids on the one hand, and by single seed descent on the other, are compared. There is no difference in the expectations in the absence of linkage. When linkage is present, however, the frequency of recombinant lines is higher in populations of SSD lines and differences in variances are obtained. The magnitude and direction of these differences are shown to depend on the initial linkage phase, the recombination frequency and whether non-allelic interactions are present.
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