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当前位置: 首页 > 文章 > 赤霉素对精异丙甲草胺解毒效果及作用机制 农药 2019,58 (7) 519-522
Position: Home > Articles > The Effect and Mechanism of Gibberellin Alleviate the Phytotoxicity of S-Metolachlor on Rice Seedlings Agrochemicals 2019,58 (7) 519-522

赤霉素对精异丙甲草胺解毒效果及作用机制

作  者：
曾勍;邓希乐;周尚峰;王聪;杨露;唐易;刘思宏;杨浩娜;邬腊梅;王立峰;彭琼;李祖任;柏连阳
单  位：
湖南省农业科学院湖南省农业生物技术研究所;湖南农业大学植物保护学院;湖南农业大学生物安全科学技术学院
关键词：
赤霉素;水稻幼苗;精异丙甲草胺;谷胱甘肽转移酶
摘  要：
[目的]为了探究赤霉素作为精异丙甲草胺安全剂的可行性.[方法]通过室内琼脂培养法测定处理后水稻幼苗株高、根长、鲜重、GSTs活力及叶绿素含量.[结果]赤霉素在质量浓度8 mg/L时对施用0.25 μmol/精异丙甲草胺的水稻药害恢复效果最佳.赤霉素处理叶绿素a、叶绿素b、总叶绿素含量均高于精异丙甲草胺处理.赤霉素和精异丙甲草胺处理后4d,水稻幼苗GSTs活力显著升高.[结论]赤霉素能够有效地缓解精异丙甲草胺对水稻幼苗的药害.
译  名：
The Effect and Mechanism of Gibberellin Alleviate the Phytotoxicity of S-Metolachlor on Rice Seedlings
作  者：
ZENG Qing;DENG Xi-le;ZHOU Shang-feng;WANG Cong;YANG Lu;TANG Yi;LIU Si-hong;YANG Hao-na;WU La-mei;WANG Li-feng;PENG Qiong;LI Zu-ren;BAI Lian-yang;Hunan Agricultural University,College of Plant Protection;Hunan Academy of Agricultural Sciences,Hunan Agricultural Biotechnology Research Institute;Long Ping Branch,Graduate School of Hunan University;
关键词：
gibberellin;;rice seedlings;;S-metolachlor;;glutathione transferase
摘  要：
[Aims] This study aims to explore the feasibility of gibberellin as a potential safener of S-metolachlor.[Methods] The growth,height,root length,fresh weight and glutathione transferase activity of the treated rice seedlings were determined by agar culture method.[Results] The gibberellin at different concentrations had detoxification effects on S-metolachlor-treated rice seedlings.We observed that the S-metolachlor-treated(0.25 μmol/L) rice seedlings were recovered by gibberellin(8 mg/L).The contents of chlorophyll a,chlorophyll b and total chlorophyll at gibberellin treatment were higher than those only treated by S-metolachlor.After 4 days application,the activity of GSTs in rice seedlings increased significantly,indicating that gibberellin may increase the activity of GSTs in rice seedlings.[Conclusions] This result indicated that gibberellin can alleviate the phytotoxicity of S-metolachlor on rice seedlings.

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