National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Genetic divergence study of 144 rice landraces using Mahalanobis D2 statistics revealed the presence of considerable genetic diversity. The 144 diverse landraces were grouped into 13 clusters with the cluster VI consists of maximum of 17 landraces followed by cluster XII which has 16 landraces. The maximum intra cluster distance was recorded in cluster V (969.20) followed by cluster II (917.05) indicating that the landraces included in these cluster were relatively more diverse. Among the inter cluster distances highest was recorded for cluster V and XII (5989.69) followed by cluster XI and XII (5155.12). The inter cluster distance was higher than the intra cluster distance indicating wide genetic diversity among the genotypes of different groups. For grain yield per plant, the highest cluster mean was recorded in cluster X (49.50gm) and lowest (14.50gm) was recorded in cluster VIII. The highest contribution towards total divergence was recorded by plant height (52.37%) followed by spikelet per panicle (24.88%), grain yield /plant (11.05%). These characters are highly genetic variable and genotype having these characters in different cluster could be used in breeding programme to develop high yielding cultivars in rice under saline condition.
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