玉米大斑病拮抗菌株KJ-2-01鉴定及耐性评价

Identification and Tolerance Evaluation of Antagonistic StrainKJ-2-01 Against Northern Leaf Blight

为了利用拮抗菌株有效防治玉米大斑病,对KJ-2-01菌株的生理生化特性、耐旱性及耐盐性进行了测定。结果表明:供试菌株初步鉴定为地衣芽孢杆菌,最适生长温度为30℃,pH 7.0;菌悬液在培养皿内放置13d后放入培养液中菌体仍能继续生长;NaCl溶液浓度在15%以下菌体仍能生长,说明该供试菌株在极端干旱和盐性环境下均能存活。

In order to control northern corn leaf blight by antagonistic strain,the physiological and biochemical characteristics,drought resistance and salt tolerance of strain KJ-2-01 were determined.The results showed that the physiological and biochemical characteristics of the strain was identified as bacillus licheniformis granules.The optimum growth temperature of tested strain was 30℃,pH 7.0,the thallus could grow normally after culturing 13 dwith bacterial suspension in culture dish;and the thallus could still grow below 15% NaCl solution,the results illustrated that the tested strain could survive in extreme drought and salt environment.