Identication of transgressive segregants for yield and earliness in blackgram [Vigna mungo (L.) Hepper]

Abstract

Transgressive segregation is a phenomenon where the progenies of a cross combination will possess the values exceeding both the parents for one or more characters. The present investigation was carried out to identify desirable transgressive segregants for maturity and yield in ve blackgram crosses viz., LBG-752 x TBG-104, LBG-752 x PU-31, LBG-752 x TU-40, TU-40 x TBG-104 and IPU-2-43 x TBG-104. The highest frequency of desirable segregants for both yield and maturity were observed in the cross LBG-752 x TBG-104 (13.75%). High frequency of such favorable transgressive segregants indicates that the parents possess diverse alleles and genes governing respective characters from which it could be inferred that there is an ample scope to bring in benecial alleles into a single genetic background through careful selection in further generations. Meticulous selection schemes along with proper pedigree maintenance can aid in successful development of short duration and high yielding blackgram varieties from these segregants.