从葫芦科作物及空心菜的叶片、茎及花上共分离到95个菌株,采用抑菌圈法共筛选到对西瓜细菌性果斑病病原菌具有不同程度拮抗作用的菌株46株,占分离菌株总数的48.4%;从拮抗菌株中筛选出5株对西瓜细菌性果斑病菌具有较好拮抗效果的菌株,其对西瓜细菌性果斑病的防治效果为68.75%-93.24%.内生性测定结果表明这5株菌株均能在西瓜体内定殖,5株菌株经过革兰氏染色、鞭毛染色、芽孢染色和一些生理生化测定,初步被确定为芽孢杆菌属(Bacillus spp.).%Ninety five bacterial strains were isolated from water spinach (Ipomaea aquatica) and Cucurbitaceae plants, of which forty six endophytic bacterial strains could inhibit Acidovorax avenae subsp. Citrulli, it accounted for 48.4%. Five strains were selected with the control effect of 68.75% -93.24%.The five strains could colonize in watermelon, and were identified as Bacillus spp. Based on the results of Cram, flagella, spore stains and physiological and biochemical tests.
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