Anand Kumar, Sanjay Kumar, Sanjeev Kumar and Parmanand Parmhansh
Abstract
Experiment was conducted to characterize a set of 120 land races of rice genotypes of north Bihar for nine panicle morpho-grain characteristics traits. A wide range of variation was observed with respect to panicle length, number of primary branches, number of grains per panicle, 1000-grain weight, L/B ratio, grain elongation and grain yield per plant. 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 identified best were, 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 respectively. The results of the characterization of different panicle morpho grain characteristics traits would prove beneficial in formulating breeding programme of lowland and deep water rice.