GENETIC VARIABILITY AND HERITABILITY STUDIES IN F5 GENERATION OF BLACK GRAM (Vigna mungo L.Hepper)

A.S. Reddy¹*, G.M. Lal^2
1Department of Genetics and Plant Breeding, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, 211007, Uttar Pradesh, India
²Department of Genetics and Plant Breeding, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, 211007, Uttar Pradesh, India
* Corresponding Author : aireddysrinijareddy26@gmail.com

Received : 03-11-2020     Accepted : 26-11-2020     Published : 30-11-2020
Volume : 12     Issue : 11       Pages : 787 - 790
Genetics 12.11 (2020):787-790

Keywords : Black gram, Genetic variability, Heritability
Academic Editor : Katiyar Manoj
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to Department of Genetics and Plant Breeding, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, 211007, Uttar Pradesh, India
Author Contribution : All authors equally contributed

The present investigation was prevailed to examine the 25 black gram genotypes along with one check (SHEKHAR-2) to study the genetic variability and heritability. Analysis of variance showed highly significant differences among 25 black gram genotypes all the 13 quantitative characters studied. Maximum phenotypic and genotypic coefficient of variation was recorded for harvest index (22.162 & 13.138) followed by seed yield per plant (16.775 & 10.695), no of primary branches per plant (12.013 & 7.972). Heritability estimates revealed that characters like days to 50% flowering and number of seeds per pod was high. Seed index and pod length was low. Highest genetic advance recorded for harvest index (5.951), plant height (5.199). Highest genetic advance as percentage mean recorded for number of seeds per pod (17.05), harvest index (16.045). In general, genotypic correlation is higher than phenotypic ones. Correlation coefficient analysis revealed that seed yield per plant exhibited significant and positive correlation both at genotypic and phenotypic level with harvest index (0.820 & 0.715), number of clusters per plant (0.493 & 0.368), number of pods per plant (0.787 & 0.616), number of seeds per pod (0.249 & 0.776). Hence direct selection for these traits could be helpful in improvement of black gram breeding. Path analysis revealed that the characters like days to 50% pod setting, number of clusters per plant exhibited negative direct effect on seed yield per plant at both phenotypic and genotypic level

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