A Study on Heterosis in Interspecific Cotton Hybrids (Gossypium hirsutum L.× Gossypium barbadense L.) for Sucking Pest Resistance

Author: Adsare A.D. and Atram S.G.

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Abstract

Gossypium hirsutum L. × Gossypium barbadense L. interspecific hybrids were assessed to determine the degree of heterosis for sucking pest resistance. Forty F1 hybrids were made by crossing ten lines of G. hirsutum and four testers of G. barbadense in a line-by-tester fashion. Significant variations were found in all variables examined for sucking insect resistance throughout the crosses, according to analysis of variance. Heterosis was examined using two standard checks, MRC 7918 and Varlaxmi, as well as the midparent and better parent. The best heterotic combinations for jassid resistance and seed cotton yield were crosses RAH -1065 × Sujata, GBHV-170 × SB289E, AKH081 × Suvin, GBHV-170 × Reba-B-50, and DHY286 × Suvin. In contrast, tolerance to white flies was demonstrated by SCS-793 × SB-425 YF, AKH8828 × Suvin, and NH615 × SB289E. Significant heterosis in yield and resistance to sucking pests were demonstrated by these hybrids. By evaluating the superiority in heterosis in a large-scale study, these genotypes may be verified.

Keywords

Heterosis, Sucking pest, Yield, Jassids, Cotton

Conclusion

Therefore, the current study concludes that, in addition to percentage of heterosis, emphasis must be given to the selection of prospective crosses for continued use in breeding programs based on the performance of parents and hybrids for various traits. To verify the superiority for heterosis, a large-scale trial will evaluate for confirmation of superior crosses for the several traits found in the current experiment.

References

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How to cite this article

Adsare A.D. and Atram S.G. (2023). A Study on Heterosis in Interspecific Cotton Hybrids (Gossypium hirsutum L. × Gossypium barbadense L.) for Sucking Pest Resistance. Biological Forum – An International Journal, 15(5a): 661-664.