International Journal of Ecology and Environmental Sciences

International Journal of Ecology and Environmental Sciences


International Journal of Ecology and Environmental Sciences
International Journal of Ecology and Environmental Sciences
2020, Vol. 2, Issue 4
Genetic diversity analysis of aromatic rice germplasm

G Parimala, Ch Damodhar Raju, LV Subba Rao, K Uma Maheswari

The present study was conducted at the agricultural Research Institute (ARI), Hyderabad, during 2018-19 to identify potential genotypes and suitable traits of aromatic rice (Oryza sativa L.) germplasm for breeding programs. Fifty genotypes were evaluated in a randomized block design with three replications. All genotypes exhibited a wide and significant variation for 18 traits. According to D2 cluster analysis, 50 test genotypes were grouped into 8 clusters. Cluster IV was the largest consisting of 8 genotypes. Out of eight clusters, cluster I was the largest comprising of twenty genotypes followed by clusters II with sixteen genotypes. The clusters IV, V, VII and VIII were solitary clusters represented by single genotype exhibiting high degree of heterogeneity among the genotypes. Maximum inter cluster distance was exhibited between clusters VI and VIII (26082.43) and lowest inter cluster distance was observed between clusters IV and V (508.53). Intra cluster D2 values were minimum (0.00) in cluster IV, V, VII and VIII as these were monogenotypic clusters. The diversity profiles and Shannon diversity index ensures the existence of high genetic divergence among the studied genotypes and can be used by breeders to develop high yielding rice varieties and have immense applications in rice improvement.
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How to cite this article:
G Parimala, Ch Damodhar Raju, LV Subba Rao, K Uma Maheswari. Genetic diversity analysis of aromatic rice germplasm. International Journal of Ecology and Environmental Sciences. 2020; 2(4): 707-710.