Analysis of Combining Ability for Yield and Yield Components in Paddy using Line × Tester design under South Eastern Rajasthan

Author: Ravi Kishan Soni* and N.R. Koli

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Abstract

The line × tester is the most widely used mating design for hybrid development. Line × tester analysis which involves ‘l’ lines and ‘t’ testers is an extension of the analysis of two factor factorial experiment introduced by Fisher and Yates. Line × tester experiment was conducted to evaluate the performance of 21 hybrids along with 7 lines and 3 testers in rice. The results of the analysis of variance revealed that all genotypes were quite significant for all parameters, indicating that the treatments utilised in this study differed significantly. The results revealed that all of the traits were extremely significant for parents, cross, and parent vs. cross, with the exception of the number of panicles per plant for parent vs. cross. Overall, testers played a bigger role in the expression of most yield components than lines and line-tester interaction. Combining ability analysis is one of the most useful strategies for determining appropriate parents and cross combinations

Keywords

Combining ability, gene action, line × tester, superior hybrid.

Conclusion

Distinct parents were found as good general combiners for different traits, according to the findings. The findings revealed a strong relationship between the mean performance of the parents and their GCA impacts. On the basis of mean performance and combining ability impacts, the lines P-1121, P-1592, and P-1612, as well as the tester P-2511, were chosen as the top combiners for yield and quality attributes. Similarly, the crosses viz., P-1592 × P-2511, P-1121 × P-2511, P-1121 × Mahi Sugandha, Pratap-1 × P-2511, P-1612 × P-2511 and Basmati-370 × P-2511 were found the most promising crosses for yield attributing and quality traits. Good × good, good × poor, poor × good and poor × poor paternal combinations would have produced the crosses with the best specific combination for grain yield per plant. The identified hybrid combinations could be used for exploitation of heterosis in further hybrid development program. The magnitude of gene action and combining ability effects of

References

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How to cite this article

Ravi Kishan Soni and N.R. Koli (2022). Analysis of Combining Ability for Yield and Yield Components in Paddy using Line × Tester design under South Eastern Rajasthan. Biological Forum – An International Journal, 14(1): 308-312.