Toxicity Effects of Water Extract of Euphorbia fischeriana Steud.against Silkworm(Bombyx mori)  

狼毒大戟水浸液对家蚕的药杀效果研究(英文)

作　　者：侯伟倬[1] 甄占萱[1] 李云祥[1] 杨贵明[1] 李季生[1] 李娜[1] 

机构地区：[1]承德医学院,河北承德067000

出　　处：《Plant Diseases and Pests》2011年第1期64-66,共3页植物病虫害研究（英文版）

基　　金：Supported by Research Project Plan in Chengde Medical College(200925)~~

摘　　要：[Objective] Taking silkworm （Bombyx mori） as the test material, the research aimed to study the toxicity effects of Euphorbiafischeriana Steud. against the insects in Lepidoptera. [ Methods ] Water extract was prepared with fresh perennial E. fischer/ana Steud. , which was applied in silkworm with different methods including daubing the extract on silkworm back, soaking silkworm in the extract and feeding silkworm with the mulberry leaves daubed by the extract. [ Re- suits] Those silkworms whose backs were daubed with the water extract had no obvious poisoning symptom. The silkworms soaked for 1 and 3 min could be survived for about 7 d; the silkworms soaked for 5 min could be survived for about 2 d; and the silkworms soaked for 15 rain could be survived for 10 h at most. Those silk- worms fed with mulberry leaves daubed by water extract completely died after 2 d. [ Conduslons ] The water extract of E. fischer/ana Steud. had significant contact toxicity and stomach poisoning against silkworm.[Objective] Taking silkworm （Bombyx mori） as the test material, the research aimed to study the toxicity effects of Euphorbiafischeriana Steud. against the insects in Lepidoptera. [ Methods ] Water extract was prepared with fresh perennial E. fischer/ana Steud. , which was applied in silkworm with different methods including daubing the extract on silkworm back, soaking silkworm in the extract and feeding silkworm with the mulberry leaves daubed by the extract. [ Re- suits] Those silkworms whose backs were daubed with the water extract had no obvious poisoning symptom. The silkworms soaked for 1 and 3 min could be survived for about 7 d; the silkworms soaked for 5 min could be survived for about 2 d; and the silkworms soaked for 15 rain could be survived for 10 h at most. Those silk- worms fed with mulberry leaves daubed by water extract completely died after 2 d. [ Conduslons ] The water extract of E. fischer/ana Steud. had significant contact toxicity and stomach poisoning against silkworm.

关 键 词：Euphorbiafischeriana Steud. Water extract SILKWORM Contact toxicity Stomach poisoning 

分 类 号：S482.3[农业科学—农药学]