Correlation and path analysis for seed cotton yield and yield attributing traits in multiple cross derivatives of upland cotton (Gossypium hirsutum L.) under high density planting system

Author: Gopala Krishna Murthy K. and Pradeep T.

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Abstract

India is one of the leading producers of cotton in the world and the productivity of cotton is stagnated in the recent past due to cultivation of robust hybrids by adopting wider spacing. One of the options to enhance cotton productivity is to develop short and compact plant types amenable for high density planting system. Keeping in view, the need of the hour, an experiment was conducted at Agricultural College, Aswaraopet during Kharif 2016 to understand the nature and magnitude of relationship among yield and yield attributing traits in 52 multiple cross derivatives of cotton by partitioning correlation coefficients between yield and its’ contributing traits into direct and indirect effects. Data was recorded on seed cotton yield and eight yield contributing characters like days to 50% flowering, plant height, number of monopodia, number of sympodia, length of the sympodial branches, number of bolls, boll weight and 100-seed weight. The results of correlation revealed that seed cotton yield exhibited high positive correlation with boll weight, number of bolls, length of the sympodial branches and moderate positive association with number of sympodia and plant height, indicating the importance of these traits in enhancing yield under high density planting system. Path coefficient analysis revealed that the highest positive direct effect on seed cotton yield was registered by boll weight and number of bolls plant-1. Thus, from the studies on correlation and path analyses, it could be suggested that the characters viz., boll weight, number of bolls plant-1, length of the sympodial branches, number of sympodia and plant height could be used as selection criteria for improving seed cotton yield under high density planting system.

Keywords

Correlation, path coefficient, multiple cross derivatives, seed cotton yield and high density planting system

Conclusion

The results of the present study concluded that the traits viz., boll weight, number of bolls plant-1, length of the sympodia, plant height and number of sympodia plant-1 were found to be key parameters indicating that the increase in seed cotton yield is due to increase in one or more of the above traits and therefore selection on these traits would be useful to enhance yield whereas boll weight, number of bolls plant-1 were found to exhibit direct effect with seed cotton yield plant-1 and need to be considered as significant criteria for improvement of seed cotton yield under narrow spacing.

References

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How to cite this article

Gopala Krishna Murthy K. and Pradeep T. (2023). Correlation and path analysis for seed cotton yield and yield attributing traits in multiple cross derivatives of upland cotton (Gossypium hirsutum L.) under high density planting system. Biological Forum – An International Journal, 15(8a): 45-50.