欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
为寻找新的高活性杀虫化合物，本研究以小菜蛾（Plutella xylostella）为靶标筛选出杀虫抗生素3704。室内生测试验表明：抗生素3704粗提物处理2龄小菜蛾幼虫24、48和72h，LC550分别为59．82842、38．66165和22．69325μg／mL。盆栽试验表明：处理后48h，500μg／mL的杀虫素3704粗提物对小菜2龄幼虫的防治效果与8μg／mL阿维菌素同期防效相当，但施药时间延长至72h和96h后，防治效果低于阿维菌素。分离纯化链霉菌3704杀虫活性物质，鉴定出其化学结构为已知杀螨剂哒螨酮（pyridaben），本研究首次报道从微生物次级代谢产物中分离出该化合物。
英文摘要：
The objective of this study was to find new highly active insecticidal compounds. Antisect antibiotic 3704 was chosen using Plutella xylostella as a target. A laboratory bioassay was conducted on its insecticidal activity to the 2nd in- star larvae of P. xylostella. The values of LC50 were 59. 82842,38. 66165 and 22.69325μg/mL after treated with crude extract of 3704 for 24,48 and 72 h. A pot experiment indicated that after 48h treatment, the control efficacy of antisect antibiotic 3704 against P. xylosteUa at 500 μg/mL was equal to that of Avermectin at 8 μg/mL. When the treatment time was longer to 72h and 96 h,the control efficacy of antisect antibiotic 3704 was lower than that of Avermectin. The insec- ticidal compound was isolated, purified and identified as Pyridaben. To our knowledge, this is the first report of isolating Pyridaben from microbiological metabolites.
同期刊论文项目
同项目期刊论文
期刊信息
位置：