红树植物提取物的杀螨活性试验  

Acaricidal Activity of Extracts from Mangrove Plants

作　　者：邓业成[1] 玉艳珍[1] 毕秀莲[1] 

机构地区：[1]广西师范大学生命科学学院,广西桂林541004

出　　处：《农药》2007年第8期568-570,共3页Agrochemicals

基　　金：广西教育厅科研项目(桂教科研[2005]47号);广西博士学位授权点学科建设专项经费资助项目(XKY2006ZD01)

摘　　要：采用叶片残毒法测定了16种红树植物甲醇提取物对柑橘红蜘蛛的杀螨活性。结果表明,海芒果、苦槛蓝、苦榔树和黄槿对柑橘红蜘蛛雌成螨的触杀活性高,药液质量浓度为10g/L时,24h的校正死亡率达90%以上;榄李、海漆和水黄皮有中等杀螨活性,校正死亡率为66.90%～74.19%;其余植物的杀螨活性低,校正死亡率在50%以下。海芒果、苦槛蓝、苦榔树、黄槿和榄李对雌成螨的致死中浓度(LC50值)分别为1.8416、2.8757、2.9218、4.9325、6.5728g/L。红树植物提取物对柑橘红蜘蛛卵也有触杀活性,其中苦槛蓝、苦榔树、木榄、海漆、老鼠簕、海芒果、白骨壤和草海桐的杀卵活性高,药液质量浓度为10g/L时,校正死亡率在80%以上。Acaricidal activity of methanol extracts from 16 mangrove plants against Panonychus citri McGregor was determined. The results showed that the extracts from Cerbera manghas L., Myoporum bontioides A. Gray, Clerodendrum inerme （L.） Gaertn. and Hibiscus tiliaceus L. had high contact activity against adult female mites at 10 g/L, with a corrected mortality being above 90%, extracts from Lumnitzera racemosa Willd., Excoecaria agallocha Linn. and Pongamia pinnata （L.） Merr. had moderate acaricidal activity, with the corrected mortality being 66.90-74.19%, extracts from the other mangrove plants had low activity, with the corrected mortality being below 50%. The median lethal concentrations （LC50 values） of Cerbera manghas L., Myoporum bontioides A. Gray, Clerodendrum inerme （L.） Gaertn., Hibiscus tiliaceus L. and Lumnitzera racemosa Willd. to adult female mites were 1.8416, 2.8757, 2.9218, 4.9325 and 6.5728 g/L, respectively. Extratcs from mangrove plants also had contact activity against eggs of Panonychus citri McGregor, and Myoporum bontioides A. Gray, Clerodendrum inerme （L.） Gaertn., Bruguiera gymnorrhixa （Linn.） Lam., Excoecaria agallocha Linn., Acanthus ilicifolius Linn., Cerbera manghas L., Avicennia marina （Forsk.） Vierh, and Scaevola sericea Vahl had high activity against eggs at 10 g/L, with the corrected mortality being above 80%.

关 键 词：红树植物 柑橘红蜘蛛 杀螨活性 

分 类 号：S482.52[农业科学—农药学]