A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Singh, J.
- Genetic Divergence in Vegetable Cowpea (Vigna unguiculata L.)
Authors
1 Department of Vegetable Science, College of Agriculture, Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.), IN
2 Pt. K.L.S. College of Horticulture and Research Station (I.G.K.V.), Rajnandgaon (C.G.), IN
Source
The Asian Journal of Horticulture, Vol 11, No 2 (2016), Pagination: 323-328Abstract
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 and 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 pod width. It indicates that sufficient variability exhisted among the genotype for the mentioned characters. The GCV value was higher for plant height, pod yield per plant indicated that these characters exhibited variability among the genotypes. The highest heritability was recorded for the characters plant height (60DAS), days of maturity , fruiting duration, 50 per cent flowering ,pod setting per cent per 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.
Keywords
Genetic Divergence, D2 Analysis, Vegeatable Cowpea (Vigna unguiculata L.).
- Early Generation Selection for Green Pod Yield and its Components in Vegetable Cowpea [Vigna unguiculata (L.) Walp.]
Authors
1 Department of Vegetable Science, Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.), IN
2 Department of Genetics and Plant Breeding, Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.), IN
3 Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.), IN
Source
The Asian Journal of Horticulture, Vol 10, No 1 (2015), Pagination: 1-10Abstract
Correlation and path co-efficient analysis were carried out in parents, F1 and F2 generations of 6 × 4 parental line x tester cross in cowpea. Experiment comprising of 60 diverse vegetable cowpea genotypes was carried out at Horticultural research cum instructional farm, Indira Gandhi Krishi Vishwavidyalaya, Raipur during Kharif of 2008. The result of correlation study in all three generations showed that green pod yield per plant had significant and positive correlation with number of pods per plant, pod length and pod weight. In base population, F1 and F2 the path analysis revealed that number of pods per cluster, days to final picking, pod weight and fruiting duration expressed a highest positive direct effect on green pod yield per plant, respectively. The correlation and path analysis studies revealed that 100 seed weight, pod weight, pod length and number of pods per plant were major components of green pod yield in early generations of vegetable cowpea. Hence, the direct selection in form of selection indices based on these component characters would be effective in development of high yielding genotypes of vegetable cowpea.