Inheritance of resistance to Yellow Mosaic Virus (YMV) was studied in crosses of mungbean, black‐gram and their interspecific crosses with Vigna sub‐lobata. Resistance to YMV was recessive in the three Vigna species. The segregation ratios in F2 and back crosses indicated that the resistance was digenic recessive in the crosses of mungbean and in interspecific crosses of mungbean with blackgram and Vigna subiobata but YMV resistance was monogenic recessive in blackgram crosses.
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Pal et al. (1991) studied this question.