蕓苔素內(nèi)酯保護玉米免受胺苯磺隆傷害的作用及機理研究.pdf

1、分類號UDC密級Y834029單位代碼10537湖南農(nóng)業(yè)大學農(nóng)業(yè)推廣碩士學位論文蕓苔素內(nèi)酯保護玉米免受胺苯磺隆傷害的作用及機理研究SttfdiesontheActionanditsMechanismofBrassinnolideforReducingthePhytotoxicityofEthametsulfurononMaize研究生姓名指導教師專業(yè)領域研究方向毛朝暉柏連陽植物保護農(nóng)藥學提交論史同期!QQi生!Q旦g曰答辯委員會毛席鍪建

2、至學位授予H期論文答辯同期!!!j生!!旦!!臼論文評閱人邁堡唑壁二00五年十月昱型ABSTRACTEthametsulfuronisflrlexcellentkindofherbicideincontrollingtheweedsinrapefieldsItsbiologicalactivitiesisveryhighanditsusingquantityislowItcarlcontrolbothsingleleafweedsand

3、doubleleavesweedsinrapefieldseffectivelyItissafetohuman，domesticanimalandenvironmentButitremainsinsoillongwhilemaizeisverysentitivetoitThereoftenhappenthatphytotoxicityofethametsulfilrononmaizeTherefore，howtOreducethephy

4、totoxicityofethametsulfurononmaizeisaworthyresearchUsingsafenersisthefirsteffectivemeasureForthat，theinfluenceofethametsulfurononthegrowthofdifferentmaizespeciesweremeasuredbycultivatingitinwaterandsoilTheactionanditsmec

5、hanismofbrassinolidefor1educingthephytotoxicityofethametsulfurononmaizearestudiedonthebaseoff~0FinerstudiesThemainresultswerelistedasf0110wed：1TheactionofbrassinolideforreducingthephytotoxicityofethametsulfurononmaizeWaS

6、determinedbycultivatingitinsoilinindoorsTheresultsshowed：brassinolidecallremarkablyreducethephytotoxityofl6Opg／kgethametsulfurononmaizewiththeconcentrationsofO01004mg／LBRThe0：02mg／LbrassinolideCallreducethephytotoxityof2

7、0—32Ol_tgdkgethametsulfurononmaizewithdifferentextent2ThefieldexperimentationshowedthattheoutputreductionratioofmaizewaswhencornseedwastreatedwithethametsulfuronAccordinglythemechanismofBRforprotectingmaizefromthephytoto

8、xicityofethametsulfuroncouldbeinterrelatedwithitsstimulationontheacdvityofALS118％andseedsokingwithO，02andO04mg‘L一1BR、if159ai／hm2ofethametsulfuronwasusedtheoutputreductionratioofmaizewas02％andO1％respectivel礦BRwasaootentia