Molecular analysis of powdery mildew (Erysiphe polygoni DC) resistance in black gram (Vigna mungo L. Hepper)

Abstract

Black gram (Vigna mungo L. Hopper)) is a major pulse crop grown in tropical and sub tropical Asian countries. In India it covers an area of 3.17 m. ha, with annual production of 1.33 mt and average productivity of 419 kg/ha. [1]. Over the years the trend in its production and productivity has shown a decline in the country. Amongst different biotic and abiotic factors impact of powdery mildew (Erysiphe polygoni DC) disease might be the major constraints in its production causing 20- 40 per cent yield losses in black gram [2]. Host plant resistance (HPR) is the most effective means to over come this.