Variability and Path Analysis of Panicle Characters in aman Rice Cultivars

摘要

Genetic variability, direct and indirect effects of 12 pamcle characters on grain yield were estimated from 25 (shallow deep) aman rice cultivars. Highest phenotypic and genotypic coefficient of variations were recorded in number of high density grains, good grains and filled grains per panicle, panicle weight and grain yield/plant. High heritability (in broad sense) accompanied with high genetic advance was observed in number of filled grains, good grains and high density grains per panicle, 100-kernel and grain weights, and grain yield/plant. High positive direct effect with significantly positive association was recorded in panicle weight, filled grains, good grains and high density grains per panicle, kernel length and breadth, 100-kernal and grain weights. Higher number of filled grains and high density grains per panicle, long slender kernel, 100-grain weight and pamcle weight are the direct components for effective selection indices in shallow deep aman rice cultivars.