Genetic analysis for yield and its components in mustard (Brassica spp.)

The nature of gene action in the inheritance of seed yield and its contributing traits in three crosses of mustard (Kranti x PC-6, ACN-9 x PC-6, and TAM 108-1 x PC-6) was studied using generation mean analysis.Six generations (P , P , F , F , BC , BC ) in each cross wereevaluated in a Randomized block design with three replications during 2022-23 Rabi season.For crop improvement it is necessary to know the gene action governing various yield contributing traits so appropriate breeding methods can be decided.Analysis of variance for six generations revealed signi icant differences among the generations within cross for all evaluated traits.Six parameter model (m, d, h, i, j, l) and scaling tests revealed the presence of inter-allelic interactions (epistasis) for most of the yield and its contributing traits.Results showed that both additive and non-additive types of gene action were signi icant in governing the inheritance of the yield and it's contributing traits.Hence on the basis of gene action studied in case of duplicate epistasis, it is suggested that selection should be delayed until the ixation of alleles.And in case of complementary epistasis, traits can be exploited through heterosis breeding or biparental mating.