Effect of Mungbean Yellow Mosaic Virus (MYMV) on Yield and Yield Components of Mungbean (Vigna radiata (L.) Wilczek)

Abstract

Fourteen MYMV susceptible F₃ progenies from a cross NM 92 x VC 1560D showed significant differences for MYMV disease infection, yield and yield components. These progenies suffered from 18.5 to 40.5 percent decrease in plant height, 11.7 to 64.0 percent reduction in number of pods per plant, 5.8 to 82.2 percent reduction in seeds per pod, 7.4 to 35.0 percent decrease in pod length, 10.6 to 53.3 percent reduction in 1000 seed weight and 32.2 to 78.6 percent decrease in grain yield per plant. The MYMV incidence showed significant correlation (0.526) with the decrease in 1000 seed weight. The decrease in yield and other yield components showed non significant positive correlation with MYMV incidence.