Evaluation of french bean germplasm for resistance to Mungbean yellow mosaic virus.

摘要

A total of 127 French bean (Phaseolus vulgaris) genotypes (lines and cultivars) were evaluated for resistance to Mungbean yellow mosaic virus in Karnataka, India, the summer of 2004. Nine lines (IC 525208, IC 525260, IC 525267, IC 525269, IC 525271, IC 525284, IC 525285, IC 525286 and a breeding line of Arka Bold x Arka Komal) were resistant, recording a percent disease incidence of less than 5%. Ten lines were moderately resistant (5.1-15.0% disease incidence). Eighty-two lines were susceptible (15.1-50.0% disease incidence), whereas 26 lines were highly susceptible (more than 50.1% disease incidence). The lines that exhibited resistance and moderate resistance were further evaluated in 2005. Two lines (IC 525260 and IC 525284) showed resistance (2.3 and 3.65% disease incidence) and recorded pod yields of 15.1 and 12.8 t/ha, respectively.