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 |
The improvement of any crop mainly depends upon the nature and magnitude of genetic variability present in the base population. The objective of this study was to assess the genetic diversity and relationship among the G. hirsutum genotypes using multivariate Mahalanobis D2 statistics. Forty G. hirsutum genotypes of diverse origin were utilized in this study. Analysis of variances for dispersion showed significant differences among the genotypes and these genotypes were grouped into 7 clusters with maximum number of genotypes in cluster I (26 genotypes) from different locations. Cluster II was the second largest with 9 genotypes. Cluster III, IV, V, VI and VII were solitary clusters with nil intra-cluster D2 values. Character, bundle strength (30.64) contributed maximum to genetic divergence followed by days to 50% flowering (20.38), number of monopodia per plant (10.64), 2.5% span length (8.97), boll weight (6.15), seed cotton yield per plant (6.03). Thus the present study identified divergent genotypes SCS 1061, CCH 14-2, TSH 0533-1, RS 2767, SCS 1207, L 1008, CCH 14-1, GJHV 510, BS 26 and BS 23 from distant clusters for their exploitation in the breeding programme.
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