Interspecific Hybridization between Mungbean (Vigna radiata) and Rice Bean (Vigna umbellata) for Crossability and Related Parameters

摘要

Understanding the feasibility of interspecific hybridization between mungbean and ricebean is a first step to introgress mungbean yellow mosaic virus (MYMV) resistant genes to cultivated mungbean varieties from ricebean which is highly resistant to MYMV. Twenty eight interspecific hybridization involving four mungbean {Vigna radiata) and seven rice bean {Vigna umbellata) varieties were attempted to study crossability and other related parameters. Among twenty eight interspecific crosses attempted sixteen crosses were successful in setting pods. Of these sixteen interspecific crosses, KKM-3 x KBR-1 was found better with high crossability per cent, high hybrid pollen fertility, high seed germination percentage, lower hybrid lethality and lower hybridbreakdown was observed, suggesting that among all the cross combinations attempted this cross combination is a potential source for obtaining new gene combinations. The other two crosses which were next better combinations were KKM-3 x RBL-6 and KKM-3 *BRBM 127.