Introgression of disease resistance in urdbean (Vigna mungo) by involving its related species

Cercospora leaf spots is one of the major foliar diseases urdbean (Vigna mungo (L.) Hepper) causing a considerable yield loss. Screening germplasm and induction mutation has not yielded any source resistance. Hence, an experiment was conducted at research farm CSKHPKV Palampur, Himachal Pradesh during 2017–21 for introgression disease resistance in urdbean. A total 45 interspecific cross combinations were attempted between × moongbean [Vigna radiata R. Wilczek], ricebean umbellata (Thunb.) Ohwi H. Ohashi] adzukibean angularis (Willd.) Ohashi]. Only 12 crosses successful. SSRs used confirmation hybridity wide crosses. True F1’s phenotyped 13 morphological characteristics with respect to parental lines study trait expression. Most either intermediate both parents or resembled their male parents. Here, we also report hybridization Vigna through bridge species crossing strategy where F1 hybridized separately adzukibean. All hybrids showed resistant reaction spots.