Inheritance and joint segregation pattern of testa colour and plant growth habit in mungbean (Vigna radiata (L.) Wilczek)

Abstract

The mode of inheritance of seed coat (testa) colour, plant growth habit and their joint segregation pattern in mungbean was examined in F,, F2, BC, and BC2 of five crosses among six parents which differed for each character. The results showed monogenic inheritance of seed coat colour. Black, black spotted and dull green seed coat colours were dominant over green, nonspotted (green) and shiny green colour respectively. The inheritance of twining plant growth habit was found to be dominant over non-twining growth habit. The joint segregation studies of mungbean seed coat colour and plant growth habit in F2 and backcrosses revealed that these two traits have no linkage. The absence of linkage between these two traits should make it possible to combine non-twining plant type and shiny green seed coat colour in F2 and subsequent generations.