Assessment of genetic variability and diversity analysis in medium duration rice accessions

A total of 64 medium duration rice accessions were evaluated for their genetic variability and divergence during Rabi season 2020 at Pandit Jawaharlal Nehru College Agriculture Research Institute, Karaikal. Analysis variance revealed significant differences all the traits considered study. The spikelets per panicle filled grains recorded high GCV as well PCV thereby indicating that these would be improved effectively through selection. Other yield component viz., plant height, productive tillers plant, panicle, fertility cent, grain weight single heritability coupled with advance, simple selection could effective improving characters. D2 values hierarchical clustering analysis grouped germplasm into seven clusters. In both methods, genotype Gold 44 was under separate clusters that, this is a diverse among genotypes taken Further, AD 16124 same cluster in methods highest mean plant. Hence, efficiently utilized improvement programme rice. Keywords: Variance, Heritability, Genetic Diversity, Cluster Rice