Correlation coefficient Analysis in Bread Wheat (Triticum aestivum L.) Genotypes under Heat Stress Conditions

Author: Paras, M.S. Dalal, Vikram Singh, V.S. Mor, Yogender Kumar and Suman Devi

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Abstract

Forty bread wheat genotypes were evaluated in two replicated trials under late sown irrigated conditions during 2020-21 and 2021-22. The Experiment assessed the effects of different traits on grain yield and their association under late-sown conditions in bread wheat. The character, grain yield per plot exhibited a highly significant and positive correlation under heat stress conditions with the number of tillers per meter, biological yield per plot, grain weight per spike, harvest index, 1000-grain weight, number of spikelets per spike, spike length, number of grains per spike, while it also manifested the highly significant and negative correlation with days to maturity and days to anthesis. The yield components exhibited varying trends of association among themselves. Thus, the most important traits revealed under heat stress conditions were the number of tillers per meter, harvest index, biological yield per plot and grain weight per spike, which may contribute considerably towards higher grain yield

Keywords

Bread wheat, correlation coefficient, heat tolerance

Conclusion

For a successful breeding program, it is very important to have a piece of scientific information about the interrelationship between yield and yield-attributing traits. It is plausible to conclude that the strategic selection of genotypes using correlation analysis permits the concurrent augmentation of many traits contributing to grain production in bread wheat based on such data regarding the connections among grain yield and its component traits. In this study correlation coefficients between grain yield and component traits under heat stress conditions need attention for such imperative traits which possess positive and highly significant correlation with the grain yield are very important. The character, grain yield per plot under heat stress conditions exhibited a highly significant and positive correlation with the number of tillers per meter, biological yield per plot, grain weight per spike, harvest index, 1000-grain weight, number of spikelets per spike, spike length, number of grains per spike. Whereas, a highly negative and significant correlation was observed between grain yield per plot with days to maturity and days to anthesis was also observed. The yield component traits exhibited varying trends of association among themselves. Thus, revealed that under heat stress conditions such traits were the most important and may contribute considerably towards higher grain yield

References

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How to cite this article

Paras, M.S. Dalal, Vikram Singh, V.S. Mor, Yogender Kumar and Suman Devi (2024). Correlation coefficient Analysis in Bread Wheat (Triticum aestivum L.) Genotypes under Heat Stress Conditions. Biological Forum – An International Journal, 16(7): 296-299.