Characterization of Rice Germplasm of North Bihar for Panicle Morphology and Grain Characteristic Traits under Rainfed Lowland and Deep Water Condition

A wide range of variation was observed in a set of 120 land races of rice genotypes of north Bihar for nine panicle morpho-grain characteristics traits. Majority of genotypes with intermediate panicle length, number of primary branches, number of grains per panicle, 1000-grain weight, L/B ratio, grain elongation and grain yield per plant. Larger number of genotypes with medium yield potential, having 110-140 grains per panicle. Head rice recovery ranged from 45-55 per cent in most of the genotypes. Estimates of coefficient of variation showed that variability in number of secondary branches (24.01%), number of primary branches (21.74%), number of grains per panicle (19.36%), L/B ratio (16.35), 1000-grain weight (14.21%) and grain elongation (7.49%). Based on the mean performances, the genotypes, viz.; TCA 88-42-2 and TCA 88-45 for panicle length, TCA 88-57-3 and TCA 88-51-3 for primary branches, TCA 95-2 and TCA 93-3 for secondary branches, TCA 88-2 and TCA 88-8-1 for number of grains per panicle, TCA 88-57-1 for head rice recovery, TCA 95-7 and TCA88-47 for 1000-grain weight, TCA 98-1 and TCA 95-6 for L/B ratio, TCA 88-1 and TCA 98-7 for grain yield per plant and TCA 88-92-1 and TCA 88-42 for grain elongation were found best. The results of the characterization of different panicle morpho –grain characteristics traits would prove beneficial in formulating breeding program of lowland and deep water rice's and also for their utilization in other breeding programs