STUDIES ON HOST RESISTANCE OF MUNGBEAN AGAINST MUNGBEAN YELLOW MOSAIC VIRUS IN THE AGRO-ECOLOGICAL CONDITION OF LATERITIC ZONE OF WEST BENGAL

Abstract

An experiments was conducted on various aspect of mungbean yellow mosaic virus (MYMV) under the agroecological condition of lateritic zone of West Bengal during the pre-kharif season of 2009 on mungbean (Vigna radiate). Survey on the natural incidence of the yellow mosaic disease (YMD) in different locations indicated an incidence range of 5.33% to 14.00% according to the location and variety. Out of 18 mungbean germplasm tested, one was found Resistant (R), 9 Moderately Resistant (MR), 7 Moderately Susceptible (MS) and only one accessions was found Susceptible (S). Minimum incidence 4.80% was recorded from variety ML-818 and found resistant (R) against MYMV. Whereas, variety Pusa-Baishakhi was found most susceptible (S) in this region and showed maximum incidence of 21.03%. Mungbean genotype ML-818, IPM-99-125, PANT-M-4, PDM-139, UMP-9903, Pusa-2072, SML-668, Asha, PS-16, and MH-96-1 can be considered as prominent lines against mosaic disease. The percentage reduction in yield was varied among the germplasm of mungbean. Minimum reduction in yield (4.11%) was noticed in genotype ML-818 followed by IPM-99-125 (4.27%), PANL-M-4 (5.03%), PDM-139 (5.06%), UMP-9903 (5.56%) and Asha (6.25%).