Morphological Investigations on Putative indices of different Cotton Genotypes Regarding Leaf Reddening under different Irrigation Environments

Author: A. Blesseena, R.S. Wagh and D.A. Raut

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Abstract

A research trail was planned to find out the abiotic cause of major disorder in cotton i.e., leaf reddening, during Kharif 2020, at Cotton Improvement Project, Mahatma Phule Krishi Vidyapeeth, Rahuri, Ahmednagar (dist.), Maharashtra, India. The main objective of the trail was to study morphological parameters of cotton plants in three different genotypes (Phule Shwetambari, Phule Mahi and Rashi 659) under three different irrigation environments (June, July and August) and sown during three different intervals of time (rainfed environment, irrigated environment and waterlogged environment). Standardize the different irrigation environments were the great challenges in the present research. Maximum leaf area plant-1 at 50 % flowering, plant height and number of branches plant-1 were observed in normal sowing time i.e., June, under irrigated environment and in Bt hybrid i.e., Rashi 659 but, more number of leaves plant-1 at 50 % flowering were observed in Phule Shwetambari genotype. Leaf area affected plant-1, plants affected with reddening plot-1 and per cent incidence of leaf reddening was more in extra late sowing time i.e., August, under waterlogged environment and in Bt hybrid i.e., Rashi 659 while, more number of affected leaves plant-1 were observed in Phule Mahi genotype of cotton.

Keywords

Cotton, Leaf reddening, Morphology, Sowing time, Genotype and Environment

Conclusion

The study of morphological factors showed that an irrigation system produced better outcomes with the least amount of leaf reddening. Compared to the other two habitats, the waterlogged environment had a more noticeable influence on the reddening of cotton leaves. With the delay in sowing time in the cotton crop, the proportion of plants with reddening, the number of affected leaves per plant and the area of affected leaves per plant all increased. At practically all moisture circumstances, cotton sown at the normal sowing time experienced less leaf reddening than cotton sown at the delayed sowing time. Bt hybrid Rashi 659 recorded more percent incidence of leaf reddening and leaf area affected plant-1 compared to the other two genotypes studied.

References

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How to cite this article

A. Blesseena, R.S. Wagh and D.A. Raut (2023). Morphological Investigations on Putative indices of different Cotton Genotypes Regarding Leaf Reddening under different Irrigation Environments. Biological Forum – An International Journal, 15(6): 266-274.