Abstract
Analysis of full and half sib progenies of two populations of winter-maturing cauliflowers revealed additive genetic variation and considerable heterosis for several agronomic characters. It is advocated that the most effective method of capitalizing upon the additive genetic component would be to select for curd diameter, as this greatly affected both yield and quality. Additionally, variability in the incompatibility system should permit the exploitation of heterosis by screening for self-incompatibility as part of recurrent selection.

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