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.