| 桂富荣1,李亚红2,李正跃1.不同温度下新蚜虫疠霉对桃蚜的毒力测定[J].植物保护,2005,31(3):61-64. |
| 不同温度下新蚜虫疠霉对桃蚜的毒力测定 |
| Effect of temperature on virulence of Pandora neoaphids against Myzus persicae |
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| DOI： |
| 中文关键词: 有害生物生物防治 新蚜虫疠霉 桃蚜 毒力测定 |
| 英文关键词:pest bio-control Pandora neoaphidis Myzus persicae virulence |
| 基金项目: |
| 桂富荣1 李亚红2 李正跃1 |
| 1.云南农业大学植物保护学院 云南昆明650201;2.云南省植保植检站 云南昆明650034 |
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| 中文摘要: |
| 在15、18、21、25、28℃温度下,将新蚜虫疠霉应用孢子浴法对1～2龄桃蚜进行毒力测定,各处理温度分别设10个剂量,每剂量处理蚜虫60～120头,逐日观察记载蚜虫死亡数量。结果表明,新蚜虫疠霉具有较强杀蚜虫特性,其致病性在25℃时达最佳效果。接种后的前2d为新蚜虫疠霉的潜伏期,接种后3～4d为对桃蚜的致死高峰期。在温度15、18、21、25、28℃下,接种60min后,新蚜虫疠霉对桃蚜的LT50值分别为3.0、3.7、2.8、2.53、.9 d。 |
| 英文摘要: |
| Virulence of the entomophthoralean fungus, Pandora neoaphidis was bioassayed on the green peach aphid, Myzus persicae at RH=85%, L∥D=12∥12 and temperature of 15, 18, 21, 25℃ and 28℃, respectively in the laboratory. The aphids with detached leaves of the Chinese cabbage were exposed to the spore shower of the fungal inocula produced in vitro for 1-60 min, resulting in 10 doses with each for 60-120 aphids. Based on daily observations, most of the visible deaths occurred on days 3-4. The result reveals that P. neoaphidis show the maximal effect at the temperature of 25℃. The LT50 of M. persicae at 15, 18, 21, 25℃ and 28℃ was 3.0, 3.7, 2.8, 2.5 days and 3.9 days, respectively. |
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