Inheritance studies of self-incompatibility in low chill requiring genotypes of cabbage (Brassica oleracea L var. capitata) for boltized flowering

Abstract

The commercial cultivars of cabbage being grown in our country are of temperate type requiring chilling treatment after head formation for a period ranging from 6-8 weeks for bolting, flowering and seed setting. It is possible in high hills only, where the cabbage seed crop takes two seasons being biennial. To tide over this problem, tropical genotypes have been developed during the last over two decades so that seed crop may be raised in lower hills also. In CSKHPKV also, mild chill requiring genotypes of cabbage have been developed during the last over one decade through hybridization of tropical genotypes, capable of producing compact heads under relatively higher temperature, with the most popular temperate cultivar ‘Golden Acre’ and good seed crop is possible in about 8-9 months period. As in other cole crops, cabbage favours cross-fertilization by means of self-incompatibility system. This genetic phenomenon be used to facilitate the cross fertilization required for hybrid seed production in Brassica was first suggested by Pearson [2].