擬氨基多糖(K1、K2)對煙草青枯病的抑制效果及在土壤中的消長動態(tài)研究.pdf

1、中國科學(xué)技術(shù)大學(xué)碩士學(xué)位論文擬氨基多糖（K1、K2）對煙草青枯病的抑制效果及在土壤中的消長動態(tài)研究姓名：王阿楠申請學(xué)位級別：碩士專業(yè)：@指導(dǎo)教師：@20100101在中低濃度時對土壤微生物影響小，無環(huán)境副作用。關(guān)鍵字：關(guān)鍵字：擬氨基多糖K1、K2煙草青枯菌土壤微生物StudyoneffectionofglucidaminanaloguesK1K2againsttobaccobacterialwilttheirdynamicalterat

2、ioninsoilAbstractRencentlythesoilenvironmentgetmepressurethaneverbefe.Indertoresolvethesoilpollutionproblemmaintainthesustainableagriculturethereisatrendtodevelopnovleenvironmentalfriendlyagrichemicals.Thesoilmicrobeswhi

3、chwerethemaincomposementinsoilplayedanimptantroleinmicroecosystemwereviewedasakindofsensitiveindicatfassessingthesoilhealth.Throughmonitingthechangeofmicrobebiomasssoilrespirationsoilenzymethenativemicrobesdiversitytheso

4、ilqualitycanbeknown.Basedonthesetheysabovethisresearchwasmainlyabouttwoareas:1.ThetobaccoRalstoniaSolanacearumwerebothculturedonnutrientagarplatesinoculatedinseedlingstageoftobaccothenglucidaminanalogueK1K2wereusedaccdin

5、gtoaserialconcentrationtostudytheinhabitionefficency.TheresultindicatethatK1caninhabitRalstoniaSolanacearumgrowthentirelyattheconcentrationrangefrom150to15000.K2canreachthesameresultattheconcentrationrangefrom150to150000

6、.comparewiththecontrolplateK1attheconcentration150000hadnodifferencetheaveragenumberofcolonyperplatewas112115.theimmaturetobaccoshowedwiltassoonasinoculatedwithRalstoniaSolanacearumrecoveriedgraduallyafterusingK1K2.Thede

7、nsityofmicrobialsuspensionshledbyK1K2within10hswassignificantlylowerthanthecontrolboth.Theopticalmicroscopyalsoshowedthathledmicrobialbodydifferedwiththecontrolwhichbodyareregularshtrodshapethosehledmicroganismsbecameirr

8、egularrodshapedamaged.AlltheresultsindicatedthatK1K2hadinhabitioneffectontobaccoRalstoniaSolanacearumK2wasmeefficiencythanK1.2.EffectsofdifferentconcentrationsofK1glucidaminanaloguechemicalonthesoilbnemicroganismswereinv