白僵菌的致病力与菌株生长特性及几丁质酶活性的关系

• 作 者: 张爱文 刘维真 邓春生 吴正铠 农向群
• 机 构: 中国农科院生防所,中国农科院生防所,中国农科院生防所,中国农科院生防所,中国农科院生防所
• 出 处: 生物防治通报
• 发表日期: 1990年04期
• 关键词: 几丁质酶 致病力 生长特性 自僵菌 产孢量 酶活性 昆虫病原真菌 冠虫霉 昆虫体 振荡培养

将辽宁、河南、山东等地采集到的70个寄生于桃小食心虫的球孢白僵菌菌株以3龄桃小食心虫进行筛选,得到了46-1,46-2和37-3三个致病率分别为96.7％、92.8％和93.3％的优良菌株。以四个代表高,中、低致病率的菌株46-1、46-2、7-1(43.3％)和66(33.3％),测定其菌丝的生长量,产孢量和几丁质酶活性的结果显示菌株的致病力与菌丝生长量、几丁质酶活性、菌株产孢量呈显著的正相关。

70 Beauveria bassiana parasites collected from Liaoning, Henan and Shandong were screened by the third instar peach moth, and the results of 46-1, 46-2 and 37-3 The excellent strains were 96.7%, 92.8% and 93.3% respectively. Four high, medium and low pathogenic strains 46-1,46-2,7-1 (43.3%) and 66 (33.3%) were used to determine their mycelial growth, sporulation and chitin production The results of the enzyme activity showed that the pathogenicity of the strain was significantly and positively correlated with mycelial growth, chitinase activity and sporulation of the strain.