IDENTIFICATION OF SOYBEAN STRAINS RESISTANT TO XANTHOMONAS-CAMPESTRISPV GLYCINES

Soybean germplasm was screened for resistance to bacterial pustule dis ease. The etiological agent, Xanthomonas campestris pv. glycines, was isolated from the leaves of field grown soybean in Maharashtra, India. The screening of soybean stocks was carried out by excised leaf inocu lation method. A differential susceptibility to the pathogen was obser ved in the tested stocks. Two stocks P-4-2 and P-169-3 were found to b e completely resistant to the pathogen and displayed an incompatible r eaction. Four cultivars, EC-34160, Bragg, Kalitur and PK-472 displayed moderate resistance and the remaining stocks were susceptible to the attack of the pathogen. The stocks P-4-2 and P-169-3 remained resistan t even to a high concentration of 10(9) colony forming units (cfu)/ml of the pathogen.