Genetic Variability and Associations of Selected Wheat (Triticum aestivum L.) Genotypes under Early and Late Sown Rainfed Conditions

Author: Priyanka, Vijay Rana, Amit Rana* , Shubhanshu Anubhav, Chetan Gupta and Gazal Saini

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Abstract

The present study was conducted during rabi season 2019-20 to find variability, correlations and path coefficient analysis. Two experiments were conducted in α –RBD design on 66 genotypes for recording observations under duly sown and late sown unirrigated conditions. Examination of variations showed critical genotypic contrasts among all the characters which shown that the genotypes had adequate level of differences. Under both the situations high heritability together with high genetic advance for peduncle length and biological yield per plant were observed. So, selection can be compelling for these characters for further change of the genotypes beneath conditions of stress. It is indicated by correlations and path coefficient analysis that biological yield per plant, harvest index were important traits under both conditions, because they had a significant correlation with grain yield and high direct effect and indirect effects on grain yield per plant. This appeared genuine rela

Keywords

Correlation coefficient, path coefficient, heritability and genetic advance.

Conclusion

Characteristics such as peduncle length and biological yield per plant, as well as genetic advance, show high heritability as percent mean.Traits such as biological yield per plant, harvest index and 1000-grain weight showed highly significant and positive correlation with grain yield per plant, can be used as selection criteria in grain yield improvement under both the environments. By performing direct selection on traits such as biological yield per plant, harvest index, and 1000-grain weight in both environments, the path coefficient analysis revealed that selection results in high grain yield can be obtained by selecting for traits such as these, which have exhibited positive, significant correlations with grain yield as well as positive impacts on grain yield. It was also reported by (Dayem et al., 2021) that grain yield was directly affected by harvest index, followed by biomass yield. So, selection based on these traits may prove effective in improving yield.

References

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How to cite this article

Priyanka; Rana, V.; Rana, A.; Anubhav, S.; Gupta, C. and Saini, G. (2022). Genetic Variability and Associations of Selected Wheat (Triticum aestivum L.) Genotypes under Early and Late Sown Rainfed Conditions. Biological Forum – An International Journal