氟唑磺隆在野燕麦中的内吸传导特性  

Uptake and translocation of flucarbazone-sodium in Avena fatua

作　　者：范添乐 魏芩杰 陈小军[1] 宋玥颐 任莉[1] 管凌君 FAN Tianle;WEI Qinjie;CHEN Xiaojun;SONG Yueyi;PEN Li;GUAN Lingjun(School of Horticulture and Plant Protection,Yangzhou University/Joint International Research Laboratory of Agriculture &.Agri-Product Safety (Yangzhou University),Yangzhou 225009,Jiangsu Province,China)

机构地区：[1]扬州大学园艺与植物保护学院/农业与农产品安全国际合作联合实验室(扬州大学)

出　　处：《农药学学报》2018年第6期809-813,共5页Chinese Journal of Pesticide Science

基　　金：江苏省“六大人才高峰”高层次人才项目(NY-101);扬州市科技计划(产学研合作专项)(YZ2016252,YZ 2018137);扬州大学大学生科技创新项目(X20170685)

摘　　要：新型除草剂氟唑磺隆是磺酰脲类小麦田除草剂,为明确其在野燕麦植株中的内吸传导特性以及为合理使用氟唑磺隆防除杂草策略的制定提供科学依据,分别采用水培法和涂药法研究了氟唑磺隆在野燕麦Avenafatua植株中的传导特性。结果显示:采用水培法以50mg/L的氟唑磺隆处理野燕麦根部,药后24h野燕麦根、叶鞘和下部成熟叶中氟唑磺隆含量的占比分别为22%、74%和4%,心叶中未检测出;药后48h野燕麦根、叶鞘、下部成熟叶和心叶中氟唑磺隆含量的占比分别为23%、58%、8%和11%。采用涂药法以50mg/L氟唑磺隆处理野燕麦成熟叶片,药后24h野燕麦下部成熟叶和心叶中氟唑磺隆的含量占比分别为57%和43%,根和叶鞘未检测出;药后48h野燕麦根、叶鞘、下部成熟叶和心叶中氟唑磺隆的含量占比分别为1%、1%、68%和30%。结果表明,氟唑磺隆能被野燕麦的根吸收,具有优异的自下而上的内吸传导特性;同时氟唑磺隆能被野燕麦的叶片吸收,并可在叶间传导和向根传导。表明氟唑磺隆在野燕麦中具有双向传导的能力。Flucarbazone-sodium is a sulfonylurea herbicide used for controlling the weeds in wheat fields.The objective of this study is to investigate the uptake and translocation of flucarbazone-sodium and to provide evidences for formulating strategies on weed control.Uptake and translocation properties of flucarbazone-sodium was investigated through water culture method or applying flucarbazone- sodium on the leaves of Avenafatua.When A.fatua roots were incubated with flucarbazone-sodium aqueous solution at the concentration of 50mg/L,the content percentage of flucarbazone-sodium in roots,leaf sheaths and mature leaves ofA.fatua were 22%,74%and 4%24h after the treatment, respectively.However,flucarbazone-sodium was not detected in apical leaves.The content percentage of flucarbazone-sodium in roots,leaf sheaths,mature leaves and apical leaves ofA.fatua were 23%, 58%,8%and 11%48h after the treatment,respectively.When flucarbazone-sodium was applied on the mature leaves at the concentration of 50mg/L,the content percentage of flucarbazone-sodium in mature leaves and apical leaves ofA.fatua were 57%and 43%24h after the treatment,respectively,while flucarbazone-sodium was not detected in roots and leaf sheaths.48h after the treatment,the content percentage of flucarbazone-sodium in roots,leaf sheaths,mature leaves and apical leaves ofA.fatua were 1%,1%,68%and 30%,respectively.The results showed that flucarbazone-sodium could be absorbed by root and translocate from root to leaf and leaf sheath,meanwhile,flucarbazone-sodium could accumulate in the leaf and could be transported to the leaf sheath and root.It could be concluded that flucarbazone-sodium exhibits a unique property with two-way systemicity ability in A.fatua.

关 键 词：氟唑磺隆 野燕麦 内吸 传导性 

分 类 号：S482.4[农业科学—农药学]