您好，欢迎访问湖南省农业科学院 机构知识库！

The potential of Myosoton aquaticum extracts and compounds to control barnyardgrass (Echinochloa crus-galli)

文献类型： 外文期刊

作者： Yang, Haona 1 ; Tang, Yi 3 ; Wang, Lifeng 2 ; Guo, Yanan 2 ; Luo, Dingfeng 2 ; Wu, Lamei 2 ; Deng, Xile 2 ; Li, Xiaogang; 1 ;

作者机构： 1.Hunan Agr Univ, Coll Plant Protect, Changsha 410128, Peoples R China

2.Hunan Acad Agr Sci, Hunan Agr Biotechnol Res Inst, Changsha, Peoples R China

3.Hunan Univ, Long Ping Branch, Grad Sch, Changsha, Peoples R China

关键词： allelopathy; barnyardgrass (Echinochloa crus-galli); bioherbicide; coumarin; cover crops; decomposition; dihydrocoumarin; Myosoton aquaticum

期刊名称：WEED RESEARCH （ 影响因子：2.424； 五年影响因子：2.533 ）

ISSN： 0043-1737

年卷期： 2021 年 61 卷 4 期

页码：

收录情况： SCI

摘要： Although cover crops are widely used for weed suppression in the agroecosystem, little research is available regarding the possibility that the decomposed weed solution may control weeds. In this study, we tested the allelopathic effect of decomposed weed solution on barnyardgrass (Echinochloa crus-galli). In two separate tests, we found that the solution of decomposed Myosoton aquaticum completely suppressed the germination of barnyardgrass seeds at a concentration of 20 g l-1. We then isolated and identified the predominant inhibitory substance in the decomposed M. aquaticum solution. The solution was subjected to organic solvent extraction and then separated on a silica gel column before the final identification of its components by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Dihydrocoumarin was isolated from the M2 and M3 fractions using a bioassay-guided method and was found to be the most active of eleven candidate allelochemical compounds. Dihydrocoumarin is typically used as a food additive. In this study, barnyardgrass germination was completely inhibited when treated with dihydrocoumarin at 1 g l-1, and its root and shoot growth were significantly inhibited at an application rate of 0.005 g l-1. Dihydrocoumarin showed highly efficient inhibition of root and shoot growth in barnyardgrass at low concentrations compared with coumarin. These findings show that weeds may be used as cover crops to provide allelochemicals for weed suppression and that dihydrocoumarin has the potential to be used as a bioherbicide.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：湖南省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台