Estimates of PCV, GCV and Heritability Studies for Yield components and Nutritional Traits in Blackgram [Vigna mungo (L.) Hepper]

Author: Siva Reddy K.V., Srinivas T., Nagendra Rao K., Bindu Madhavi G. and Srinivasa Rao V.

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Abstract

Blackgram is one of the most important pulses crop in India. However, most of the cultivated blackgram genotypes are marginal yielders with minimal nutritional traits, mainly due to lack of genetic variability. Present research work was carried out at RARS, Lam during Rabi 2020-21 with 78 genotypes to address these problems. Good amount of genetic variability in a population determines the success of any breeding programme. In addition to genetic variability, knowledge of heritability and genetic advance assists the breeder in developing an appropriate breeding strategy. Studies were conducted on 15 parameters, for PCV, GCV, heritability (broad sense) and Genetic Advance as per cent of mean. For the traits viz., days to 50% flowering, number of branches/plant, number of clusters/plant, number of pods/cluster, number of pods/plant, seed yield/plant, protein content, iron content and zinc content, expressed high GAM and heritability indicating that these characters are controlled by additive gene action and simple selection would be effective for improvement of these traits. PCV and GCV were found to be high for the characteristics seed yield plant per plant and zinc content, indicating significant genetic diversity in the genetic material. In the current study, PCV estimations were greater than GCV values for all variables, indicating the influence of environment on genotype performance.

Keywords

Blackgram, PCV, GCV, Genetic Advance, variability, Heritability

Conclusion

Simple selection would be effective in improving the traits days to 50% flowering, number of branches/plant, number of clusters/plant, number of pods/cluster, number of pods/plant, seed yield/plant, protein content, iron content, and zinc content as they have recorded high GAM and heritability values. Other characters under study expressed high heritability in association with GAM (moderate to low), indicating non-additive gene action, these characters improved through heterosis breeding. For the traits seed yield/ plant and zinc content, coefficient of variation both genotypic and phonotypic found to be high, indicating high genetic variability in the genetic material.

References

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How to cite this article

Siva Reddy K.V., Srinivas T., Nagendra Rao K., Bindu Madhavi G. and Srinivasa Rao V. (2023). Estimates of PCV, GCV and Heritability Studies for Yield components and Nutritional Traits in Blackgram [Vigna mungo (L.) Hepper]. Biological Forum – An International Journal, 15(10): 1197-1201.