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生秀梅, 熊丽, 李小明, 陈文明, 唐红枫, 王媛. 两种新型农药对斜生栅藻(Scenedesmus obliquus Ktz.)的毒性研究[J]. 植物科学学报, 2004, 22(2): 153-157.
引用本文: 生秀梅, 熊丽, 李小明, 陈文明, 唐红枫, 王媛. 两种新型农药对斜生栅藻(Scenedesmus obliquus Ktz.)的毒性研究[J]. 植物科学学报, 2004, 22(2): 153-157.
SHENG Xiu-Mei, XIONG Li, LI Xiao-Ming, CHEN Wen-Ming, TANG Hong-Feng, WANG Yuan. Studies on the Toxicity of Two New Types of Pesticides on Scenedesmus obliquus Kütz.[J]. Plant Science Journal, 2004, 22(2): 153-157.
Citation: SHENG Xiu-Mei, XIONG Li, LI Xiao-Ming, CHEN Wen-Ming, TANG Hong-Feng, WANG Yuan. Studies on the Toxicity of Two New Types of Pesticides on Scenedesmus obliquus Kütz.[J]. Plant Science Journal, 2004, 22(2): 153-157.

两种新型农药对斜生栅藻(Scenedesmus obliquus Ktz.)的毒性研究

Studies on the Toxicity of Two New Types of Pesticides on Scenedesmus obliquus Kütz.

  • 摘要: LY-04和WSQIF是由华中师范大学农药所合成的两种新型有机磷农药,LY-04属于α-氧代膦酸衍生物,WSQIF属于芳氧基乙酰氧基烃基膦酸脂。选用斜生栅藻(ScenedesmusobliquusKütz.)作为实验生物,通过显微计数测定藻细胞的密度以计算LY-04和WSQIF对斜生栅藻24h、48h、72h、96h的半效应抑制浓度(EC50),研究其对斜生栅藻的毒性效应。结果表明:以丙酮为溶剂时,每隔24h取样,测得LY-04对斜生栅藻的48h、72h、96h的EC50值分别为2942.5mg/L、239.7mg/L和65.0mg/L,而WSQIF的24h、48h、72h、96h的EC50值分别为15.9mg/L、53.0mg/L、98.0mg/L和28.8mg/L。LY-04和WSQIF分别作为杀虫剂和除草剂而研制,经活体研究表明,LY-04具有较强的杀虫活性,WSQIF则具有很强的除草活性,所得EC50值基本符合设计结果。根据毒性分级标准,LY-04和WSQIF的EC50值远大于3mg/L,其对非靶生物中的水生藻类都属于低毒,可推广应用。

     

    Abstract: LY-04 and WSQIF were two newly-synthesized compounds which were presented by the Institute of Pesticides Chemistry, Central China Normal University. LY-04 belonged to α-oxophosphonic acid derivatives, while WSQIF was aromatic acetyl oxophosphonic acid derivatives. In this paper, the toxicity of LY-04 and WSQIF on Scenedesmus obliquus Kütz. were studied. The 24 h, 48 h, 72 h, 96 h EC50 of LY-04 and WSQIF in acetone were determined by detecting the cell density of the S. obliquus cells. It indicated that the 48 h, 72 h, 96 h EC50 of LY-04 were 2942.5 mg/L, 239.7 mg/L and 65.0 mg/L, respectively, and the 24 h, 48 h, 72 h, 96 h EC50 of WSQIF were 15.9 mg/L, 53.0 mg/L, 98.0 mg/L and 28.8 mg/L, respectively. A series of (studies) showed that LY-04 had higher insecticidal activity, while WSQIF had higher phytocidal activity. As LY-04 and WSQIF were designed for insecticide and herbicide respectively, the results were in compete with the anticipated ones. And according to the toxicant classification standard, EC50 of LY-04 and WSQIF were all far higher than 3 mg/L, therefore the toxicity of LY-04 and WSQIF to the aquatic algae were low, indicating these two kinds of pesticides were rather safe to the aquatic ecosystem.

     

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