Genetic Variability, Heritability and Genetic Advance Analysis for Yield and its Attributing Traits in Ridge Gourd Hybrids (Luffa acutangula L.)

Author: Suvedha M., Marichamy M.S., Kanthaswamy V., Vengadessan V. and Venkadeswaran E.

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Abstract

During the rabi season of 2021-2022, a total of eighteen hybrids of ridge gourd were assessed at the Eastern farm of Horticulture, Pandit Jawaharlal Nehru College of Agriculture and Research Institute, Karaikal, U.T. of Puducherry. Observations were meticulously documented for various growth, yield, and quality parameters. For each of the examined traits, it was observed that phenotypic variance exceeded genotypic variation. The slight disparities in genotypic and phenotypic coefficient of variation indicated minimal environmental influence on the considered traits. Notably, traits such as sex ratio, number of male flowers, number of female flowers, number of seeds, number of fruits, weight of individual fruits, vitamin C content, crude protein content, and fruit yield per vine exhibited significantly high estimates of both genotypic and phenotypic coefficient of variation in the current study. Furthermore, the study revealed substantial estimates of heritability and genetic advance for specific traits. These traits included vine length at final harvest, number of primary branches per vine, sex ratio, nodes bearing the first male flower anthesis, nodes bearing the first female flower anthesis, number of male flowers per vine, number of female flowers per vine, fruit length, number of fruits per vine, weight of individual fruit, vitamin C content, crude protein content, total soluble solids content, and fruit yield per vine. This suggests the predominant role of additive gene action in controlling these traits.

Keywords

Ridge gourd, variability, heritability and genetic advance

Conclusion

This study revealed high variability in traits like sex ratio, number of male flowers per vine, number of female flowers per vine, number of seeds per fruit, number of fruits per vine, individual fruit weight, vitamin C content, calcium content, crude protein content, and fruit yield per vine. Moderate variability was observed for vine length at final harvest, number of primary branches per vine, node bearing the first male flower anthesis, node bearing the first female flower anthesis, fruit length, fruit girth, 100-seed weight, total number of harvests, crude fibre content, and total soluble solids content. Traits with high heritability and genetic advance, such as vine length at final harvest, number of primary branches per vine, sex ratio, node bearing the first male flower anthesis, node bearing the first female flower anthesis, number of male flowers per vine, number of female flowers per vine, fruit length, number of fruits per vine, individual fruit weight, vitamin C content, crude protein content, total soluble solids content, and fruit yield per vine, are predominantly governed by additive gene action. This indicates the potential for effective selection in crop improvement for these traits.

References

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How to cite this article

Suvedha M., Marichamy M.S., Kanthaswamy V., Vengadessan V. and Venkadeswaran E. (2023). Genetic Variability, Heritability and Genetic Advance Analysis for Yield and its Attributing Traits in Ridge Gourd Hybrids (Luffa acutangula L.). Biological Forum – An International Journal, 15(9): 383-386.