Triallel Analysis for Ginning Outturn in Inter and Intra Specific Cotton Hybrids

Author: Y. Prashanth*, T. Pradeep, A. Sudarshanam, D. Saida Naik and B. Ramprasad

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Abstract

Ginning outturn, is one of the economically important trait to enhance lint yield. It showed that high GOT % is good for devising strategy for fiber quality improvement also. Genetical improvement of this complex trait had created attention of conventional plant breeders, any plant breeding technique has to be decided based on the gene action involved for expression trait. Triallel analysis provides information on all types of gene actions viz., additive, dominance and epistatic components besides giving information on order of parents in three-way cross combinations for obtaining superior hybrids transgressive segregants. In the present study an attempt was made to obtain information on gene action controlling the trait ginning outturn of cotton in 60 inter and intra specific three way cross hybrids. The result revealed that, role of additive as well as non-additive gene action in the expression of this trait. Suggested, improvement would be possible by adopting special breeding metho

Keywords

Ginning outturn, triallel analysis, inter specific cotton hybrids.

Conclusion

Finally from this study, computation of genetic variances gave an indication of significant amount of both additive and non additive. Positive significant of 1 line general effect of first kind (hi) and second kind (gi) indicated preponderance of additive gene action. The three-way cross having parental lines in the order of (Adilabad kapas-1 × ARBC-64) × ADB-39 exhibited high positive three line effect compared to alternate triplet (Adilabad kapas-1 × ADB-39) × ARBC-64 or (ADB-39 × ARBC-64) × Adilabad kapas-1 that have negative Tijk effects. This clearly indicated the importance order effects of parents in production of potential three-way cross hybrids. The cross ADB-39 × CNH-115 was identified as better combination for SCA among all other. The character was predominantly governed by additive and additive × dominance epistatic component of gene action. Therefore, these findings suggested that, trait improvement would be possible by adopting special breeding methods like in

References

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How to cite this article

Y. Prashanth, T. Pradeep, A. Sudarshanam, D. Saida Naik and B. Ramprasad (2022). Triallel Analysis for Ginning Outturn in Inter and Intra Specific Cotton Hybrids. Biological Forum – An International Journal, 14(1): 147-150.