The objective of this two year (three seasons/year) crop study was to
determine the seed quality of hybrid cotton seed produced utilising ge
neric male sterility system, in off-season (summer, second crop, SU-2)
and in second kharif (third crop, KH-3) as compared to the normal see
d crop (first kharif crop, KH-1). To achieve this objective three crop
s were taken (harvested) from the same parental stock by modifying the
fruiting activity period and morphoframe. Seed produced in off-season
-summer (second crop, SU-2) and second Kharif (third crop, KH-3) had g
ermination percentage, seed index and seedling vigour that were equal
to or significantly superior to the first kharif crop (KH-1). It is ve
ry clear that second (off-season) and third seed crops can be efficien
tly harvested from the same parental stock with the seed quality much
superior to the standard norms for hybrid seed certification for cotto
n in India.