Abstract
A randomized complete block experiment of a 4 × 4 diallel cross was conducted in the greenhouse to study the inheritance of resistance to race 6 of Plasmodiophora brassicae Wor. in cabbage (Brassica oleracea var. capitata L.). Results show that additive genetic effects are high; dominance effects are also present but much lower as compared to the additive effects. It appears that there is only one major gene group showing dominance. Cultivar Badger Shipper carries the most recessive genes among the four parents studied. The narrow sense heritability is estimated at 83%.
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