Asian Journal of Bio Science

R. S. Vaishnav ¹, K. Srivastava ¹, P. K. Singh ¹

Affiliations
1 Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi (U.P.), IN

Abstract

Nine parents and their eighteen hybrids from a line x tester design were evaluated for fruit yield and its components. Line x tester interaction was found significant for all the traits except, plant height considered variance due to treatment were found to be significant for all the characters under study. Whereas, variance due to lines was found to be a significant for all the characters except, days to 50% flowering and fruit length while variance due to testers was found nonsignificant for all the characters. On the basis of gca effects across three characters, RHRC-Cluster-Erect, PBC-535, LCA-235 and LCA-206 were identified as most promising parents for involving in hybridization programme aimed in improving number of fruit per plant as well as other important yield and yield contributing characters. Cross combinations, KA-2 x PantC-1, LCA-235 x Pusa Jwala, PBC-535 x PantC-1, RHRC-Cluster-Erect x Pusa Jwala, RHRC-Cluster-Erect x LCA-206 and RHRC-Cluster-Erect x PantC-1 were recorded specific combiner for fresh yield per plant due to positive significant of sca effect. The manifestation of heterobeltiosis for fruit yield per plant was evidenced by significant superiority of two out of eighteen crosses over better parent ranging from 6.87% in case of RHRC-Cluster-Erect x PantC- 1 to 13.48% in case of KA-2 x LCA-206 while rest of the crosses showed significant negative estimates of heterobeltiosis.The most promising crosses with significant positive heterobeltiosis for fresh yield per plant were KA-2 x LCA-206 (15.91%), PBC-535 x PantC-1 (20.10%), RHRC-Cluster-Erect x Pusa Jwala (16.32%), RHRC-Cluster-Erect x LCA-206 (42.60%) and LCA-438 x PantC-1 (16.26%).

Keywords

Chilli, Combining Ability, Heterosis, Yield and Yield Component.

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Rajeshwar Nandan ¹, R. S. Vaishnav ¹, K. Srivastava ¹, Kaushlendar Kumar Issar ¹

Affiliations
1 Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi (U.P.), IN

Abstract

Twenty one diverse winged bean genotypes were evaluated for phenotypic and genotypic variability, heritability and genetic advance in nine quantitative traits. Considerable amount of genetic variability was exhibited by days to 50% flowering, pod length, dry pod weight, 100 seed weight and grain yield per plant. Days to 50% flowering, days to maturity, number of pod per plant, 100 seed weight and grain yield per plant gave high heritability estimates with moderate genetic advance, which indicates additive gene effects to provide a rapid genetic improvement. The genetic advance and heritability estimates suggested that the characters e.g. days to 50% flowering, days to maturity, number of pod per plant, dry pod weight, 100 seed weight and grain yield per plant were under additive gene effects.

Keywords

Winged Bean, GCV, PCV, Heritability, Genetic Advance.

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