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Estimations of Heritability in a Narrow Sense and Genetic Gain for Diverse Typescripts in Tomato (Solanum lycopersicum L.)

Author: Lav Kumar and G.C. Yadav

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Abstract

The present experiment was carried out to investigate the 55 genotypes (45 F1 and 10 parental lines) of tomato (Solanum lycopersicum L.) in a field trial at Experimental Station, Department of Vegetable Science, A.N.D. University of Agriculture and Technology, Kumarganj, Ayodhya (U.P.). The treatments were arranged in a set of ten parental lines and their F1developed by the diallel cross was later evaluated in a randomized block design and maintained three replications for each treatment in the year 2020-21 and 2021-22. The superiority of F1 determines by the high estimate of heritability in narrow-sense (>30), which showed by the parameters including plant height, primary branch, total soluble sugar and non-reducing, in both experimental years as well in pooled whereas expected gain or high genetic advance in per cent of mean (>20%) was observed for total fruit yield per plant, marketable fruit yield per plant, locules per fruit, average fruit weight, fruit per plant, primary branch, plant height, days to 50 % flowering in both the years. High estimates of heritability with high genetic advance as per cent of mean provides a clear picture to the breeders for improvement during the process of selection. This investigation suggested that the selection of the high heritability (narrow sense) coupled with high genetic advance as per cent of the mean would be highly effective and efficient characters.

Keywords

Tomato, Solanum lycopersicum L., heritability, narrow sense, genetic gain

Conclusion

Our study suggested that the high heritability (narrow sense) coupled with high genetic advance as per cent of mean reflected that traits primary branches per plant and plant height were governed by additive gene action and therefore, selection may be highly effective for the above-recorded characters.

References

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How to cite this article

Lav Kumar and G.C. Yadav (2023). Estimations of Heritability in a Narrow Sense and Genetic Gain for Diverse Typescripts in Tomato (Solanum lycopersicum L.). Biological Forum – An International Journal, 15(2): 481-484.