Assessment of mungbean genotypes for durable resistance to <scp>Y</scp>ellow <scp>M</scp>osaic <scp>D</scp>isease: <scp>G</scp>enotype × <scp>E</scp>nvironment interactions

Abstract

Abstract Yellow mosaic disease ( YMD ) is the major constraint of mungbean for realizing high productivity worldwide. Moreover, management of disease using YMD ‐resistant genotypes is the simplest approach. Therefore, based on a preliminary screening of 220 genotypes during the year 2010 and 2011 at 17 locations, a set of 25 genotypes was further selected to evaluate at six locations over 2 years for identification of more stable resistant genotypes. The genotype and genotype × environment ( GGE ) analysis indicated that the genotypes and environment effects were significant (P &lt; 0.001) for YMD incidence. Interestingly, the GGE biplot analysis successfully accounted for 74.71 per cent of the total variation with three genotypes ( ML 818, ML 1349 and IPM 02‐14) showing high degree of resistance and stability over the locations. Notably, a strong positive association was observed between disease reaction and temperature, relative humidity and rainfall. As crop is grown in diverse growing environments, aforementioned genotypes can be used as stable/durable sources for future breeding programme to develop YMD ‐resistant cultivars.