Studies on genetic diversity, correlation and path analysis in rice germplasm
Electronic Journal of Plant Breeding
The present investigation was carried out to explore the extent of divergence, correlation and path analysis in 77 rice genotypes for twelve characters during Rabi, 2021. Ten clusters were formed by Mahalanobis' D 2 analysis of which cluster I was the largest with 28 genotypes. Cluster IV and IX were the smallest with one genotype each. The maximum intra-cluster distance was observed between cluster X and the maximum inter-cluster distance was between clusters VIII and X. The days to 50 %
... ing contributed to the maximum divergence. Superior mean performance for grain yield per plant was recorded in cluster IX. The grain yield per plant was found to be positively correlated with the days to 50 % flowering, the total number of tillers, the total number of productive tillers, panicle length, leaf width, the total grains per panicle, filled grains per panicle and spikelet fertility. Path analysis results revealed that the total number of productive tillers, leaf width, filled grains per panicle, days to 50% flowering, the total grains per panicle and spikelet fertility had a positive direct effect with grain yield. The selection should be done for these traits for yield improvement.