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 |
An investigation was carried out to assess nature and magnitude of genetic diversity for grain quality traits and productivity traits in mini core collection of sorghum. Mini core accessions were grouped into 15 clusters, where in cluster III had largest with 21 accessions whereas cluster XIII had minimum with 5 accessions. Plant height contributed maximum divergence with 46.2%. The inter cluster distance D2 value ranged widely with minimum values of (D2=197.61) and maximum value (D2=5541.42) indicating high diversity among mini core and it was desirable to select mini core from clusters showing high inter cluster distance. Diversity among cluster varied from (D2=255.25) to (D2=4906.5) inter cluster distance. Principal component analysis revealed that, three out of nine principal components with eigenvalues > 1 were extracted. These three components contributed 58.29% of the total variation among the mini core. Principal components first three contributed, 22.73%, 17.99%, and 15.50%, respectively toward the variation observed among accessions. Variation relative to the first component was associated with seed yield per plant, 100 seed weight, seed volume, bulk density, seed size. The second principal component was associated with plant height, ear head length, ear head width, seed yield per plant, 100 seed weight, seed volume and seed size. The third principle component was associated with ear head width, 100 seed weight, seed yield per plant and seed size.
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