Indexing

Screening of Genotypes against Cercospora Leaf Spot, Grey Mildew and Boll Rot Diseases in Cotton

Author: A. Vijaya Bhaskar

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Abstract

A study was done to identify the sources of resistance to Cercospora leaf spot, Grey mildew and Boll rot diseases in cotton.Screening was done at Regional Agricultural Research Station, Warangal, Telangana State, India under Cotton section. The experimental material consisted of 54 cotton germplasms /hybrids/varieties and 13 Bt cotton hybrids with a check and they were tested against to Cercospora leaf spot, Grey mildew and Boll rot diseases during Kharif-2017 at Regional Agricultural Research Station, Warangal. Out of 54 cotton germplasms, two entries viz., WGCV-26 and CPD-731-1 were found resistant to Cercospora leaf spot, nineteen entries namely Deltapine-66, Anjali, ADB-39, GJHV-97/29, CPT-571, CPD-7575, CPD-812,TCH-1716,NA-777,WGCV-29,WGCV-43,WGCV-26,GSHV-160,RS-2569,RS-2557, PRS-02,L-620,NDLH-1967 and WGCV-115 were found resistant to Grey mildew disease. Out of screened 13 Bt cotton hybrids against Boll rot disease, one entry AKIRA was found resistant to Boll rot disease.

Keywords

Germplasms, Cotton, resistant sources, Screening, Cercospora leaf spot disease, Grey mildew disease and Boll rot disease

Conclusion

Out of fifty four cotton germplasms, two entries viz., WGCV-26 and CPD-731-1 were found resistant to Cercospora leaf spot and nineteen entries viz., Deltapine-66, Anjali, ADB-39, GJHV-97/29, CPT-571, CPD-7575, CPD-812, TCH-1716,NA-777, WGCV-29, WGCV-43, WGCV-26, GSHV-160, RS-2569, RS-2557, PRS-02, L-620, NDLH-1967, WGCV-115 were found resistant to Grey mildew disease. Among 13 Bt cotton hybrids Moneymaker and Superb entries were moderately resistant to grey mildew and Boll rot diseases.WGCV-26, CPD-7575, CPD-812 and CPD-731-1 entries can be used in crossing programmes for development of high yielding and disease resistant/tolerant to cercospora leaf spot and Grey mildew diseases in Cotton.

References

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How to cite this article

A. Vijaya Bhaskar (2022). Screening of Genotypes against Cercospora Leaf Spot, Grey Mildew and Boll Rot Diseases in Cotton. Biological Forum – An International Journal, 14(4): 112-117.