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Position: Home > Articles > Virulence of Verticillium lecanii Viegas to Macrosiphum rosivorum Zhang in laboratory Plant Protection 2009,35 (3) 161-162

蜡蚧轮枝菌对月季长管蚜的毒力测定

作  者:
孔琼;袁盛勇;张宏瑞;王传铭;李正跃;李河
单  位:
红河学院农学系;红河学院生物系;云南农业大学植保学院
关键词:
蜡蚧轮枝菌;月季长管蚜;致死中浓度;致死中时;毒力
摘  要:
研究结果表明蜡蚧轮枝菌对月季长管蚜有较强的致病性,孢子浓度2.0×105个/mL时可造成大量月季长管蚜感染死亡,其LT50=(6.62±0.14)d;而高浓度2.0×108个/mL对月季长管蚜感染致死的LT50=(4.69±0.16)d,第8天的死亡率达93.6%,致死中时随浓度增加而缩短。第5天的致死中浓度为(1.72±0.18)×107个/mL,第8天为(1.53±0.15)×104个/mL,致死中浓度随时间增加而减小。
译  名:
Virulence of Verticillium lecanii Viegas to Macrosiphum rosivorum Zhang in laboratory
作  者:
Kong Qiong1,Yuan Shengyong2,Zhang Hongrui3,Wang Chuanming1,Li Zhengyue3,Li He2(1.Department of Biology,Honghe University,Mengzi 661100,China;2.Department of Agronomy,Honghe University,Mengzi 661100,China;3.College of Plant Protection,Yunnan Agricultural University,Kunming 650201,China)
关键词:
Verticillium lecanii;Macrosiphum rosivorum;LC50;LT50;virulence
摘  要:
The result showed Verticillium lecanii Viegas MZ041024 was strong virulence on Macrosiphum rosivorum Zhang.Most of M.rosivorum were dead in 2.0×105 spores/mL,and LT50 was(6.62±0.14)days;When concentration of Verticillium lecanii Viegas was 2.0×108 spores/mL,the mortality was 93.6% after 8 days,and LT50 was(4.69±0.16)days.LT50 was shortened with the increase of V.lecanii in concentration.After 5 days and 8 days,the LC50 was respectively(1.72±0.18)×107 spores/mL and(1.53±0.15)×104 spores/mL,LC50 was reduced with increased time.

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