CHARACTER ASSOCIATION AND PATH COEFFICIENT ANALYSIS FOR YIELD AND ITS COMPONENT TRAITS IN RICE LANDRACES OF BIHAR

Abstract

An investigation was carried out in 16 rice genotypes including 13 local landraces of Bihar to understand
association among 13 contributing traits for yield and their direct and indirect influence on grain yield. The
correlation analysis indicated that genotypic correlation coefficient was higher than their respective phenotypic
correlation coefficient. Grain yield/ha was found significantly and positively correlated with number of grains/
panicle (0.546, 0.454) and significantly but negatively correlated with plant height (-0.840, -0.727) at both
genotypic and phenotypic level respectively. Path coefficient analysis revealed that kernel breadth (1.810) had
high positive direct effect on grain yield followed by kernel L/B ratio (1.357), number of grains/panicle (1.309),
panicle length (0.362), 1000 grain weight (0.313), number of tillers/hill (0.186) and panicles/m 2 (0.087). Hence,
selection based on traits like number of grains/panicle could bring improvement in paddy yield in these rice
genotypes.