| 嘧啶氧磷对松材线虫的有效杀线活性 |
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| 引用本文： | 洪森,王新荣,徐汉虹.嘧啶氧磷对松材线虫的有效杀线活性[J].广东林业科技,2014,30(1):26-30. |
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| 作者姓名： | 洪森 王新荣 徐汉虹 |
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| 作者单位： | 华南农业大学 天然农药与化学生物学教育部重点实验室,华南农业大学植物病理系,华南农业大学 天然农药与化学生物学教育部重点实验室 |
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| 基金项目： | 国家自然科学(31000868) |
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| 摘 要： | 通过24孔板测定了几种农药原药和乙醇对松材线虫的杀线活性。试验结果表明嘧啶氧磷杀线活性最高，它的致死中浓度LC50为32．65μg／mL，95％的置信区间为25．08～42．51μg/mL；体积分数为5％的乙醇在20min内使94．4％的松材线虫麻痹，体积分数为10％的乙醇在90S内将96．7％的线虫杀死。另外，松材线虫浸入供试药剂的时间越长，所测定的LC50的值越小，克百威、灭线磷、嘧啶氧磷的LC50值从24h到72h分别由448．47，51．96，94．54μg／mL降低至51．47，36．94，32.65μg／mL。
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| 关 键 词： | 松材线虫 嘧啶氧磷 乙醇 生物活性测定LC50 |
| 收稿时间： | 2013/9/26 0:00:00 |
| 修稿时间： | 2013/11/6 0:00:00 |
Potent Nematicidal Activity of Pirimioxyphos against Bursaphelenchus xylophilus |
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| HONG Sen,WANG Xin-rong and XU Han-hong.Potent Nematicidal Activity of Pirimioxyphos against Bursaphelenchus xylophilus[J].Forestry Science and Technology of Guangdong Province,2014,30(1):26-30. |
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| Authors: | HONG Sen WANG Xin-rong and XU Han-hong |
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| Institution: | Key Laboratory of Pesticide and Chemical Biology, South China Agricultural University |
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| Abstract: | Several pesticides and ethanol were tested against Bursaphelenchus xylophilus using 24-well plate in vitro. The results showed that the most active pesticide was pirimioxyphos with LC50 value of 32.65 μg/mL, and it＇s 95% confidence limit was 25.08--42.51 μg/mL; B. xylophilus were paralyzed within 20 minutes after they were immersed in the 5% ethanol, and were killed within 90 seconds after they were immersed in 10% ethanol. In addition, the longer the immersion time of the test agent against B. xylophilus, the smaller the LC50 value was, the LCs0 values of carbofuran, ethoprophos, pirimioxyphos reduced from 24 to 72 h by 448.47,51.96,94.54 μg/mL to 51.47,36.94,32.65 μg/mL. |
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| Keywords: | Bursaphelenchus xylophilus pirimioxyphos ethanol bioassay Lethal Concentration 50 |
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