Inheritance of Yellow Mosaic Virus (YMV) in Mungbean [Vigna radiata (L.) Wilczek]

An experiment was conducted to study the inheritance of yellow mosaic virus in the cross LGG 460, PM 115 in munngbean. An infector row technique was used for evaluating F2 plant for MYMV resistance. No insecticide was sprayed in order to maintain the natural whitefly population in experimental field. In the field condition, Whitefly started landing on the plants soon after germination and the disease made its first appearance 3rd week after planting. Infection and disease severity of MYMV progressed in the next 6 weeks. According to the mean disease score, the mungbean genotypes were categorized into six groups highly resistant (HR), resistant (R), moderately resistant (MR), moderately susceptible (MS), susceptible (S) and highly susceptible (HS). 3 (Susceptible): 1 (Resistance) was observed in all F2 population and it showed the dominance of susceptibility over the resistance.