STUDIES ON GENETIC DIVERGENCE IN VEGETABLE COWPEA (Vigna unguiculata L.)
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 63
Abstract
Twenty one genotypes of vegetable cowpea including checks were planted in randomized block design at the experimental farm of Pt. K. L. S. College of Horticulture & Research Station, Rajnandgaon, during (2015-16). The data recorded on twenty one characters were subjected to analysis of variance. The analysis of variance revealed highly significant differences among the genotypes for all the characters studied except number Pod width. It indicates that sufficient variability among the genotype for the mentioned characters. The Genotypic coefficient of variation value was higher for plant height, pod yield per plant indicated that these characters exhibit variability among the genotypes. The highest heritability was recorded for the characters plant height (60DAS) ,days of maturity , fruiting duration , days to (50%) flowering ,pod setting % /plant ,100 Dry seed weight, 100-green seed weight. The genetic divergence in the present study observed among 21 genotypes of vegetable cowpea, showed low quantum of divergence and was grouped into five clusters On the basis of D2 analysis. Maximum number of genotypes (9) was accommodated in cluster - II. The average inter and intra cluster divergence (D) values had also been calculated. The intra-cluster distance varied from 0.00 to 5.04. The maximum intra cluster distance was shown by cluster I (5.04) followed by cluster V, cluster II, cluster III and cluster IV. The maximum inter cluster distance was observed in between cluster I and V (5.04). The cluster III showed maximum value for mean green pod yield (146.820g.) followed by cluster IV (146.156g.). Crossing between the genotypes of maximum two clusters appeared to be most promising to combine the desirable characters.
Authors and Affiliations
ANNU VERMA
Keywords
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