甘肃省几种昆虫病原线虫抗干燥能力测定  

Anti-desiccation Ability of Several Entomopathogenic Nematodes in Gansu Province

作　　者：邢玉芳[1] 钱秀娟[1] 刘长仲[1] 李宏刚[1] 

机构地区：[1]甘肃农业大学草业学院,草业生态系统教育部重点实验室,甘肃兰州730070

出　　处：《贵州农业科学》2009年第1期90-92,共3页Guizhou Agricultural Sciences

基　　金：甘肃省高校科学研究基金项目"甘肃省昆虫病原线虫资源的开发和应用研究"(0502-12);甘肃省农业生物技术研究与应用开发项目"昆虫病原线虫产业化生产技术研发"

摘　　要：对甘肃省8种昆虫病原线虫进行了抗干燥力测定,结果表明:昆虫病原线虫种类不同其抗干燥能力也不同。在25℃、相对湿度50.5%的小空间控制器中分别处理5 h、7 h和9 h后,斯氏线虫仍具有较高的存活率,而异小杆类线虫几乎全部死亡。经9 h干燥处理后锯蜂线虫S.kraussei存活率最高(80.3%),其次为S.bicornutum(73.7%),加水复苏后2种线虫对大蜡螟的致死率均为100%,侵入率分别为16.9%和16.4%。Results of some tests done for the antidesiccation ability of 8 species of entomopathogenic nematode in Gansu province shows that the ability relates to the species of nematodes. With treating at 25℃ and RH of 50.5 % for 5 h, 7 h and 9 h respectively, high survival rates were found in species of Steinernem while few alive in Heterorhabdit. The distinction also existed among species of Steinernem, with higher anti-desiccation ability of S. kraussei＇s than that of the other 3 species. The survival rate of S. kraussei was 80% while 73.7% of S. bicornutum when treated at 25℃, RH of 50. 5% for 9 h. Both S. kraussei and S. bicornutum could kill Galleriamellonela completely after recovery in water with penetrating rate of 16.9% and 16.4% respectively.

关 键 词：昆虫病原线虫 抗干燥能力 存活率 侵入率 致死率 

分 类 号：S431[农业科学—农业昆虫与害虫防治]