Scrutiny of gene action underlying yield contributing traits and earliness in blackgram (Vigna mungo (L.) Hepper)

Understanding the genetic architecture of complex traits is major thrust in plant breeding programs. Hence, present investigation was carried out at a dry land farm S.V. Agricultural College, Tirupati during rabi, 2020 to elucidate gene action governing seed yield, yield related and earliness blackgram. The experimental material consisted six generations viz., P1, P2, F1, F2, B1 B2 five blackgram crosses LBG-752 x TBG-104, PU-31, TU-40, TU-40 TBG-104 IPU-2-43 TBG-104. scaling tests suggested that simple additive–dominance model inadequate elucidating all for traits. Generation mean analysis based on parameter made evident interactions varied cross-wise as well character-wise. A  complementary type epistasis observed majority attributing traits, while days 50 % flowering maturity had duplicate cross combinations. High yielding short duration varieties could be developed by exploiting both additive non-additive effects set through inter-mating desirable transgressive segregants early followed pedigree selection. Keywords: Blackgram, generation analysis,