昆虫病原线虫共生菌对甜菜夜蛾和辣椒炭疽病菌的生物活性测定  

Insecticidal and Antibiotic Activities of Symbiotic Bacteria Strains to Laphygma exigua and Colletotrichum gloeosporiodies

作　　者：王欢[1] 丛斌[2] 刘彦群[1] 董辉[2] 隋欣[1] 

机构地区：[1]沈阳农业大学生物科学技术学院,辽宁沈阳110161 [2]沈阳农业大学植物保护学院,辽宁沈阳110161

出　　处：《中国蔬菜》2009年第12期33-36,共4页China Vegetables

基　　金：国家自然科学基金(30170625);国家“十五”攻关课题(2004BA509B04);辽宁省自然科学基金(20022084);沈阳农业大学青年教师科研基金(2005002);农业部公益性行业项目(200803006)

摘　　要：利用40株昆虫病原线虫共生菌菌株,以两种辣椒主要病虫害——甜菜夜蛾和辣椒炭疽病菌作为供试昆虫和真菌,对其杀虫抑菌活性进行测定。结果表明,40株共生菌菌株的发酵液对这两种病虫均有一定的抑制活性,其中嗜线虫致病杆菌(Xenorhabdus nematophila)A24-1菌株的杀虫抑菌活性最为明显,处理后120h对甜菜夜蛾的平均校正死亡率为100.00%;对辣椒炭疽病菌的抑菌圈直径为40.00mm。Forty strains of symbiotic bacteria were isolated from entomopathogenic nematodes. Bioas- say results showed that all strains had virulent activity to the first instar larvae of Laphygma exigua and Col- letotrichum gloeosporiodies to some extent, among which Xenorhabdus nematophila A24 - 1 strain was the best one. The average corrected mortalities to Laphygma exigua was 100.00 % , and the diameter of anti- biotic circle to Colletotrichum gloeosporiodies was 40. 00 mm.

关 键 词：昆虫病原线虫共生菌 生物活性 甜菜夜蛾 辣椒炭疽病菌 

分 类 号：S476[农业科学—农业昆虫与害虫防治]