Screening of Mungbean Genotypes for Resistance against Mungbean yellow mosaic virus (MYMV) during Kharif under Field Condition

Abstract

Host resistance offers the cheapest way of disease management with no environmental concern of pesticide residues. This study was conducted during kharif to identify sources of resistant genotypes against Mungbean yellow mosaic virus (MYMV) in mungbean. Here, pre-released mungbean genotypes/lines were screened against MYMV and results showed that the incidence of MYMV among the genotypes evaluated varied from 3.44 to 69.12 per cent. Highest incidence was recorded in KM-13-71 (69.12%) followed by GG-13-8 (66.66%), NM-94 (62 %) and T30 (97/1) (56.75%). Lowest incidence was recorded for Jabalapuri (3.44%) followed by GM-20 (7%), TRCRM-141 (7.87%) and 116/01 (8%). Among 40 genotypes, eight genotypes showed resistance (R) reaction against MYMV with minimum disease score of 1. Eight genotypes showed moderate resistance (MR) reaction with disease score of 2 and two genotypes showed moderately susceptible responses (MS) with a disease score of 3. Eight genotypes were found susceptible (S) with a disease score of 4, and eleven genotypes were found highly susceptible (HS) to MYMV with the disease score of 5. Among these 40 genotypes, none of the genotypes were found to be highly resistant (HR) against MYMV