Generation Mean Analysis for Yield and Yield Component Traits in Inter-specific Cross of Rice (Oryza sativa L.)

Background: Information on gene action governing yield and component traits need to be studied for adoption of effective breeding procedure wards development isolation high yielding promising lines from the cross with resistant bacterial leaf blight, blast tolerance low soil phosphorous. The present investigation was taken up in this context estimate effects components cross, YH3 x AKDRMS 21-54, using five parameter model generation mean analysis. Methods: experimental material, P1, P2, F1, F2 F3 generations, generated Kharif 2019 onwards evaluated at Agricultural College, Bapatla during Rabi 2021-22. Gene grain attributing were studied. Result: Mean all significant indicating presence sufficient variation traits. Significance scaling tests revealed additive-dominant as inadequate, epistasis. Digenic non-allelic interaction parameters, namely, m, d, h, i l that epistatic adequate explain investigation. Dominance dominance pre-dominant per plant majority coupled duplicate epistasis, importance population improvement approaches, such bi-parental mating recurrent selection, followed by purelines later generations