Genetics of some quantitative traits in mungbean

Abstract

The nature of gene effects for yield and 13 yield related traits in mungbean were studied in three crosses involving six parents through generation mean analysis. The mean data of six populations (both parents, F,, BC,, BC, and F) were subjected to the joint scaling test. In the presence of epistasis, the six- parameter model was used to detect all types of gene effects. The analysis indicated that most of the characters appeared to be complex in the expression of gene effects in different crosses. Additive and dominance gene effects were important in most of the crosses for majority of the traits. Among the digenic interactions, additive x additive and dominance x dominance played an important role in the expression of all the traits. The additive x dominance gene effects played important role in case of days to maturity, days to 50% flowering, leaf length, seeds per pod and seed yield per plant in all the three crosses.