您好，欢迎访问河南省农业科学院 机构知识库！
河南省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Isoxadifen-Ethyl Derivatives Protect Rice from Fenoxaprop-P-Ethyl-associated Injury during the Control of Weedy Rice

文献类型： 外文期刊

作者： Shen, Changchao 1 ; Tang, Wenwei 2 ; Zeng, Dongqiang 2 ; Xu, Hongle 1 ; Su, Wangcang 1 ; Wu, Renhai 1 ;

作者机构： 1.Henan Acad Agr Sci, Inst Plant Protect, Zhengzhou 450002, Henan, Peoples R China

2.Guangxi Univ, Coll Agr, Nanning 530005, Guangxi, Peoples R China

关键词： Isoxadifen-ethyl derivatives;seed treatment;synthesis;weedy rice

期刊名称：WEED SCIENCE （ 影响因子：2.713； 五年影响因子：2.868 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Fenoxaprop-P-ethyl, a phenoxy herbicide of the aryloxy-phenoxy-propionic acid group, had a strong control effect when applied POST to weedy rice in this study, with the effective concentrations of 294 mu M and 218 mu M of herbicide causing 50% inhibition (IC50) in plant height and fresh weight values, respectively. However, fenoxaprop-P-ethyl caused phytotoxicity in cultivated rice. Isoxadifen-ethyl, a widely used herbicide safener in rice, can decrease the phytotoxicity caused by fenoxaprop-P-ethyl. Owing to the extremely similar morphological features and physiological properties of weedy and cultivated rice, it is not practical to spray isoxadifen-ethyl directly on cultivated rice plants to safen them. Applying the safener directly to cultivated rice seeds may be a practical alternative method. To improve the biological activity of isoxadifen-ethyl seed treatments, novel compounds were designed by splicing other groups, including amines, amino acids, and 2-methoxy-5-nitrophenol sodium salt, to the parental structure of isoxadifen-ethyl. Through hydrolysis, acyl chlorination, acyl amination, and esterification, a series of isoxadifen-ethyl derivatives were synthesized and their structures were determined by mass spectrometry and H-1 nuclear magnetic resonance spectroscopy. The biological activities of five of the isoxadifen-ethyl derivatives, which possessed recovery effects similar to isoxadifen-ethyl, were able to relieve herbicide phytotoxicity. In pot experiments, isoxadifenethyl showed almost no activity as a seed treatment, while three derivative compounds, when used independently as seed treatments, were able to prevent the damage caused by fenoxaprop-P-ethyl. The results will help to develop a new control method for weedy rice, thereby decreasing production costs and increasing farmers' incomes.

  • 相关文献

[1]Synthesis, Structure Characterization and Fungicidal Activity of 1,3-Disubstituted-1H-1,2,4-triazole-5-amines. Jia Changqing,Xu Yanjun,Liu Jiping,Qin Zhaohai,Su Wangcang. 2016

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：河南省农业科学院

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