SPIKELET STERILITY IN RICE GERMPLASM

Abstract

A total of 1319 rice germplasm (254 early, 327 medium, 738 late) lines,
which were collected from Orissa and adjoining areas, evaluated during wet
season (June-December) of 1990 and 1991 at NBPGR Base Centre, Cuttack.
Seeds of all lines were directly sown on 6.6.90 and 10.6.91 in 3 rows of 4 m.
length with 20 x 15 ems. spacing. Normal fertilizer dose 40:20:20 N.P.K. was
applied. At maturity, panicles from main tillers of ten randomly tagged plants
from the middle row of the plots were taken. The filled and unfilled grains
were separated and sterility percent was calculated