Study of Genetic Variability, Correlation and Path coefficient Analysis in F2 Segregating Population of Tomato (Solanum lycopersicum L.)

Author: Sangamesh Nevani*, O. Sridevi, Lokesh Kumar Verma, Akshaya M., Shreyas A. and B.D. Biradar

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Abstract

Different sources of creating the variability are mutation, recombinant DNA technology, natural variation and recombinational variability. Variation due to recombination will helps in selection of superior segregants in segregating generation. This study was done to know the magnitude to genetic variability due to recombination. From the segregating F2 population of the cross DMT-2 × Line 38, genetic variability, correlation and path coefficient analysis were studied using 14 quantitative and qualitative traits. The study showed that existence of significant amount of genetic variability for all the characters studied viz., Plant height, number of clusters, number of fruits per clusters, number of fruits per plant, average fruit weight, number of locules, pH of fruit juice and fruit yield per plant exhibited higher values of genotypic and phenotypic coefficient of variation. Whereas, high heritability was shown by all characters except primary branches per plant, while days to 1st ha

Keywords

Tomato, Variability, Heritability, F2 Segregating Population, Correlation and Path analysis.

Conclusion

In respect of fruit yield, which is the most important character in any crop improvement programme, high heritability coupled with high genetic advance was the important parameter. It indicates the chances for wide range for selection in F2 population of the cross DMT-2 × Line 38 and the yield per plant was positively and significantly correlated with plant height, primary branches per plant, number of clusters, number of fruits per cluster, number of fruits per plant and average fruit weight. In path coefficient analysis the highest positive direct effect was recorded in number of clusters, average fruit weight, number of fruits per cluster and number of fruits per plant. Hence, these traits can further be exploited by direct selection for genetic improvement in tomato to bring about the improvement in yield, from this study we obtained important transgressive segregants which can be selfed upto they attain homozygosity and can be released as new variety.

References

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How to cite this article

Sangamesh Nevani, O. Sridevi, Lokesh Kumar Verma, Akshaya M., Shreyas A. and B.D. Biradar (2022). Study of Genetic Variability, Correlation and Path coefficient Analysis in F2 Segregating Population of Tomato (Solanum lycopersicum L.). Biological Forum â€