Cauliflower cytoplasmic male sterile (CMS) line: Ogu33A
Background:
Till date there is no F1 hybrid in mid-late cauliflower developed by Indian public sector. Most of
the seeds of snowball cauliflowers are imported from different countries and sold in Indian
market at a very high price (Rs. 40000-60000/kg). No Indigenous F1 hybrid is mainly attributed to
the non-availability of suitable pollination control mechanism like cytoplasmic male sterile (CMS)
line.
Technology Details:
Cauliflower is an important vegetable crop and more than 90% area is covered by F1 hybrids. Midlate group of cauliflowers are grown throughout the north Indian plain during Rabi season and
almost throughout the year in hilly regions of India. In cauliflower, F1 hybrids are advantageous
especially in uniform maturity, high early and total yield, better curd quality with respect to
compactness and colour, resistance to insect pests, diseases and unfavourable weather
conditions.
Two pollination control mechanisms viz. self-incompatibility (SI) and male sterility (particularly
CMS) are used widely for production of F1 hybrid seed However, the contribution of indigenous
hybrids is negligible and bulk of the seeds is imported from outside. Development indigenous
hybrid seed industry in vegetable crop like cauliflower is the need of the hour. It will not only
save revenues spent in import of their seeds but will also create several employment in rural
India. Development of indigenous pollination control mechanism like CMS holds the key for
indigenous hybrid seed industry in vegetable crop like cauliflower is the need of the hour. It will
not only save revenues spent in import of their seeds but will also create several employment in
rural India. Development of indigenous pollination control mechanism like CMS holds the key for
indigenous hybrid seed production. The cauliflower CMS line, Ogu33A is one indigenously
developed CMS line. It has refined Ogura male sterile cytoplasm which if free from any floral
deformities. It has partially covered white-curd. This CMS line can be used widely in developing
F1 hybrids in cauliflower. CMS system is highly preferred for hybrid seed production in cauliflower
as there is no chance of sibs/off types unlike in case of self-incompatibility based F1 hybrids.