In which variety of cauliflower seed production pis not possible in North Indian plains?

Pusa snowball-1 is the variety of cauliflower, in which seed production is not possible on North Indian plains.
Cauliflower is relatively more sensitive to deficiency of boron and molybdenum, and it has a high requirement of magnesium, because of which late cauliflower varieties do not set seeds in Plains.
Pusa Snow ball-1 is the late variety of cauliflower, sowed in September end-mid October. Outer leaves are upright and inner leaves cover the curd initially. Curd is compact, medium-sized and snow white. Curd is ready for harvest about 100 days after transplanting. Curd yield is 90 quintals/acre.