Genetic analysis of growth, photosynthesis and yield attributes in late Cauliflower (Brassica oleracea var Botrytis L.)

Genetic analysis of growth, photosynthesis and productivity attributes in late cauliflower with 9 × 9 diallel cross of F₁ and F₂ generations revealed preponderance of dominance genetic components for absolute growth rate, relative growth rate, net assimilation rate, leaf size index, curd weight, curd size and total plant weight. Over-dominance for all the characters except maturity was observed. Role of linkage for dominance and over-dominance in F₁ was observed for curd weight and total plant weight. Heritability was low for all the characters. Heterosis breeding and reciprocal recurrent selection are recommended to exploit non-additive gene action in cauliflower.