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 |
In the present investigation thirty two sunflower (Helianthus annuus L.) genotypes including two checks were evaluated to study genetic divergence. The experiment was laid out at Research Farm, Tirhut College of Agriculture, Dholi, Bihar during spring 2015-16. Data were recorded on eleven quantitative characters. The thirty two genotypes of sunflower were grouped into six cluster using Tocher method. The genotypes in cluster III and cluster IV, due to maximum inter cluster distance, exhibited high degree of genetic diversity and thus may be utilized under inter varietal hybridization programme (transgressive breeding) for getting high yielding recombinants. Similar inter varietal crosses may be attempted in cluster V and cluster VI and cluster III and cluster V. On the basis of cluster mean values, the genotypes present in cluster VI was found early in terms of days to fifty per cent flowering and having highest volume weight and oil content. Genotypes present in cluster V have maximum harvest index and 100 seed weight. Genotypes which are present in cluster III may be selected for minimum plant height and maximum biological yield while the genotypes present in cluster II was suitable for early in days to maturity. Based on cluster mean values for a given characters we can select highly divergent genotypes from the respective clusters and can be used in hybridization work.
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