蜡蚧轮枝菌对扶桑绵粉蚧的致病性研究

测定了蜡蚧轮枝菌Verticillium lecanii MZ041024菌株对扶桑绵粉蚧Phenacoccus solenopsis Tinsley的致病性。结果表明蜡蚧轮枝菌MZ041024菌株对扶桑绵粉蚧1龄若虫的致病率为83.72%,致死中浓度LC50为1.49×10^5个/m L,致死中时间LT50是5.21 d;对2龄若虫的致病率为74.42%,致死中浓度LC50为3.66×10^3个/m L,致死中时间LT50是5.55 d;对3龄若虫的致病率为76.74%,致死中浓度LC50为9.82×10^4个/m L,致死中时间LT50是5.44d;其对雌成虫的致病率为85.37%,致死中...

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Bibliographic Details
Published in环境昆虫学报 Vol. 38; no. 4; pp. 748 - 754
Main Author 袁盛勇 闫鹏飞 孔琼 邓裕亮 张宏瑞 刘正喜 何红飞
Format Journal Article
LanguageChinese
Published 红河学院生命科学与技术学院,云南蒙自,661100%云南农业大学植物保护学院 昆明650201%云南省西双版纳出入境检验检疫局,云南景洪,666100 2016
Subjects
扶桑绵粉蚧
致病性
蜡蚧轮枝菌
致病性
蜡蚧轮枝菌
Phenacoccus solenopsis
virulence
Verticillium lecanii
扶桑绵粉蚧
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Summary:测定了蜡蚧轮枝菌Verticillium lecanii MZ041024菌株对扶桑绵粉蚧Phenacoccus solenopsis Tinsley的致病性。结果表明蜡蚧轮枝菌MZ041024菌株对扶桑绵粉蚧1龄若虫的致病率为83.72%,致死中浓度LC50为1.49×10^5个/m L,致死中时间LT50是5.21 d;对2龄若虫的致病率为74.42%,致死中浓度LC50为3.66×10^3个/m L,致死中时间LT50是5.55 d;对3龄若虫的致病率为76.74%,致死中浓度LC50为9.82×10^4个/m L,致死中时间LT50是5.44d;其对雌成虫的致病率为85.37%,致死中浓度LC50为2.80×10^4个/m L,致死中时间LT50是4.87 d。说明蜡蚧轮枝菌MZ041024菌株对扶桑绵粉蚧有较强的致病性。
Bibliography:YUAN Sheng-Yong;YAN Peng-Fei;KONG Qiong;DENG Yu-Liang;ZHANG Hong-Rui;LIU Zheng-Xi;HE Hong-Fei （1. College of Life Science and Technology of Honghe University, Mengzi 661100, Yunnan Province, China; 2. Plant Protection College, Yunnan Agriculture University, Kunming 650201, China; 3. Yunnan Xishuangbanna Entry-Exit Inspection and Quarantine Bureau, Jinghong 666100, Yunnan Province, China）
44-1640/Q
The virulence of Verticillium lecanii MZ041024 to 1st,2nd and 3rd larvae and female adult of Phenacoccus solenopsis Tinsley under five different concentrations from 3. 0 × 10^4 to 3. 0 × 10^8 spores / mL was determined. Results indicated that mortality rate of V. lecanii MZ041024 to 1stlarvae was 83. 72%,the median lethal concentration（ LC550） was 1. 49 × 10 spores / mL,and the median lethal time（ LT_（50）） was5. 21 d; the pathogenic rate of isolate MZ041024 to 2ndlarvae was 74. 42%, LC50 was 3. 66 ×10^3spores / mL,and LT50 was 5. 55 d; the mortality rate of isolate MZ041024 to 3rdlarvae was 76. 74%,LC50 was 9. 82 × 10
ISSN:1674-0858
DOI:10.3969/j.issn.1674-0858.2016.04.13