水稻对双草醚敏感性差异和助剂对双草醚药效影响研究

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1、万方数据些墨型曼!．一SENSITIVEDIFFERENCEOFBISPYRIBAC．SoDIUMINRICEANDTHE玎讧PRoVINGRoLEOFADDITⅣESONITSHERBICIDEEFFECTSABSTRACTBispyribac—sodiumisoneofthepyrimidinesalicylicherbicideswhichisdevelopedbyJapaneseCombinatorialChemistryIndustryKabuskikiKaishain1988．Bisp

2、yribac-sodiumcaninhibitthechainaminoacid(isoleucine，leucine，vaiine)biosynthesis，andinterferthecelldivision，resultinsensitiveplantsstoppinggrowingandgettingchlorosis，untildeathtoachievethepurposeofweeding．Thispapertakestherice(Oryzasa盯va)asthemainresea

3、rchobjective，determineingthedifferentsensitivitybetweenOryzasativaL．subsp．japonicaS．Kato，OryzasativaL．subsp．indicaS．KatoandOryzasativaL．subsp．hybridriceS．Katoafterbispyribac-sodiumtreatedandanalyzingthemechanismofdifferentsensitivity．Theadjuvantswerea

4、ddedtoexploreanewwaytoimprovetheefficacyandavoidphytotoxicity．Inordertoprovidetheoreticalbasisandtechnicalguidanceforbispyribac—sodiumSOthatitCanbeusedsafelyandefficiently．Themainresuksasfollows：1．Itshoweddifferentsensitivi锣significantlyindifferenttyp

5、esandleafstagesofricetobispyribac-sodium．Atthesameleafstage，japonicaincludingNanjin945，Sidaollwerehighestsensitivitytobispyribac—sodium，indicaincludingNanjing1l，Yangdao26tookthesecondplace，andhybridriceincludingLingyou6362，Guangliangyou192werethelowes

6、t．Alongwiththeleafstagegrowing，thesensitivityofricetobispyribac—sodiumtoricedecreasedgradually．Allthetypesofriceshowedhighersensitivityinl-1．5leafstagethanthatin2—3leafstageand4—5Ieafstageafterbispyribae-sodiumtreated．2．After3g．ai．／667m2bispyribac—sod

7、iumtreated，thecellmembranepermeabilityofficeleavesandstemschanged．Theinnibifioneffectofbispyribac—sodiumonindica’Sleavesandstemswerelessthanjaponica．Bispyribac—sodiumtreatmentcoulddestroythechloroplastofrice，reducingthecontentofchlorophyll．Aftertreate

8、d，thechlorophyllcontentsofthericewereincreasedafterdecreasedfirstly．AndtheTBARSIII万方数据水稻对双草醚敏感性差异和助剂对双草醚药效影响研究contentsweredecreasedafterincreasedfirstly．GSHcomemswerefeUtothelowestafter5daftertreatmentandincreasedequaltothecontroltreatment7daf