黄顶菊中除草活性成份Ⅱ作用机制的初步研究

被引:5
作者
李建强
霍静倩
龚占虎
张静
任承才
康占海
张金林
机构
[1] 河北农业大学植物保护学院
关键词
黄顶菊; 除草活性; 作用机制;
D O I
暂无
中图分类号
S451 [杂草];
学科分类号
0904 ;
摘要
为了控制和利用外来入侵杂草黄顶菊,并发现新的除草作用机制,本试验通过水蒸气蒸馏的方法从黄顶菊花中提取并分离出一种除草活性很强的成份Ⅱ。在此基础上测定了成份Ⅱ对马唐叶片膜透性、叶绿素含量、β-胡萝卜素、丙二醛、超氧自由基、含水量、根系活力的变化,以明确其除草作用机制。结果表明:成份Ⅱ在光照条件下对马唐叶片膜透性、叶绿素含量、β-胡萝卜素、丙二醛、超氧自由基的影响均高于其在黑暗条件下对这些物质的影响。成份Ⅱ是一种光活化物质,其对杂草的除草活性主要是影响了杂草的光合作用。本试验为发现新的除草剂作用靶标奠定了基础。
引用
收藏
页码:69 / 74
页数:6
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