Abstract
SummaryThe inheritance of partial resistance within eight bean cultivars to a single‐pustule isolate of bean rust was studied by means of a F1 diallel test. General combining ability (GCA) and specific combining ability (SCA) were very highly significant over two seasons and in interaction with seasons. The partitioning of the sums of squares indicated the greater importance of GCA in the inheritance of the resistance. Reciprocal effects were not significant. The estimates of narrow‐sense heritability in the two seasons were 0.899 ± 0.056 and 0.603 ± 0.065.
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