Correlations between Yield and Yield - Attributing Traits and their Influence on Soybean

Author: Bhumika Singh Lodhi, Sunil Holkar, Arzoo Dhakad, Monika Chouhan and Pramod Kumar

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Abstract

In the 2022 Kharif season, comprehensive research was undertaken at the Dryland Agriculture Research Centre, College of Agriculture, Indore, Madhya Pradesh, employing a randomized block design with dual replications. The primary focus was to discern the relationship between 13 unique traits and soybean productivity. Through the assessment of 63 advanced genotypes, compared alongside three benchmark varieties, it was ascertained that grain yield (kg/ha) held a markedly significant positive phenotypic association with attributes such as the number of primary branches per plant, plant height, pod count and weight per plant, individual plant grain yield, and biological yield(kg/ha). Additionally, a pronounced positive genotypic correlation with the grain yield was observed for factors including the duration to pod initiation, days to 50% podding, and the harvest index, among others. The study faced several challenges, including the complexities of managing a large number of genotypes and ensuring the accuracy of phenotypic measurements under variable environmental conditions. Additionally, the genetic diversity of the genotypes added layers of complexity to the analysis of phenotypic and genotypic correlations. Furthermore, the study's results contribute to the understanding of the genetic architecture of soybean, paving the way for the development of high-yielding, resilient varieties. In essence, this research holds promise for bolstering food security by optimizing soybean production through informed breeding strategies.

Keywords

Genotypic Correlation Coefficient, Phenotypic Correlation Coefficient, Soybean, Heat map

Conclusion

This study illuminates the dominant role of genotypic correlations over their phenotypic counterparts in determining trait relationships in soybeans. We've detailed the nexus between grain yield and its contributory attributes, with biological yield standing out as the paramount factor. Attributes like pod weight, count, plant stature, branch count, and pod initiation further substantiate the yield. Our findings, consistent with most prior research, emphasize the importance and reliability of these associations in plant breeding. However, divergent viewpoints from studies like Kuswantoro et al. (2018); Baraskar et al. (2015) underscore the intricate nature of plant genetics. Ultimately, this research champions the significance of genotypic correlations, empowering breeders to optimize crop yields and drive agricultural advancement.

References

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How to cite this article

Bhumika Singh Lodhi, Sunil Holkar, Arzoo Dhakad, Monika Chouhan and Pramod Kumar (2023). Correlations between Yield and Yield - Attributing Traits and their Influence on Soybean. Biological Forum – An International Journal, 15(10): 379-383.