Advancement in CMS Based Hybrid Development in Cauliflower (Brassica oleracea var. Botrytis)
Amit Kumar *
Horticulture College Khuntpani, Birsa Agricultural University, Chaibasa, 834006, India.
Anjani Kumar
Department of Genetics and Plant Breeding, Birsa Agricultural University, 834006, India.
Chandan Roy
Department of Genetics and Plant Breeding, Bihar Agricultural University, 813210, India.
*Author to whom correspondence should be addressed.
Abstract
Among the different mechanism of male sterility operated in the Brassica group crop. Cytoplasmic male sterility mechanism is most suitable for hybrid development in cauliflower because here the curd (intermediate stage) is an edible part of the cauliflower. Further, there is no requirement of restorer line in this case as required in other seed crop. For the multiplication and maintenance of the different lines (A line and B line), sib mating and selfing is not always desirable. In fact, in such situation doubled haploid production through microspore culture is a more appropriate mechanism. Apart from this, the undesirable effect of integration of male sterile cytoplasm can be mitigated by adopting the repeated back crossing, through chloroplast substitution or somatic hybridization mechanism.
Keywords: Cauliflower, Brassica oleracea var. botrytis, chloroplast substitution, somatic hybridization