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0.25μmol/L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4 d,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。
[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.
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
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,Changsha 410128 China;Hunan Academy of Agricultural Sciences,Hunan Agricultural Biotechnology Research Institute,Changsha 410125,China;Long Ping Branch,Graduate School of Hunan University,Changsha 410125,China)
出处
《农药》
CAS
CSCD
北大核心
2019年第7期519-522,共4页
Agrochemicals
基金
国家重点研发计划子课题(2018YFD0201106)
国家自然科学基金面上项目(31772182)
杂草生物学与安全防控湖南省重点实验室(2015TP1016)
农田杂草安全高效防控湖南省农科院创新团队(2017GC-01)
农田杂草安全高效防控农业科研杰出人才及其创新团队
国家现代农业产业(麻类)技术体系杂草与综合防控岗位(CARS-16-E19)
中央引导地方科技发展专项资金项目(2019CT5009)
