Key factors for causing poplar Ice Nucleation Active bacterial canker and its control techniques-中国Betway体育网页登陆

摘要 Theisolation,cultureandtheactivedeterminationofpoplaricenucleationactive(INA)bacteriaandtheinoculationtestsinlaboratoryandfieldwereconducted,andthevarieties,distributionandnumberofpoplarINAbacteriaanditspathogenicityandfreezinginjurypropertyweredetermined.ThestudyresultsshowedthattheINAbacteriawidelyspreadonpoplarinNortheastChinaandcausedthefrozeninjuryforpoplarunderthefrostconditioninSpringorAutumn,whichwasthekeyfactortoinduceINAbacterialcanker.Throughevaluationandinvestigationofdifferentpoplarvarietiesandinoculationtests,finedisease-resistantvarietiesandstrainsofpoplarsuitableforNortheastChinawereselected.Furthertestsforstrongseedlingshowedthatburyingcuttingsinsandandcoveringwithplasticfilmcouldeffectivelyavoidthefrostbite,frozenanddroughtdamage,reduceINAbacteriainfection,andpromotepoplargrowth.INAbacterialcankerwasdetectedearlybyhighlyspecializedantiserumsofINAbacteriaandtheagglutinatedtestofring-shapedboundarysurface.Theinducerssuchasstreptomycin,phenylmercuricacetae,salicylicacidandheat-killedbacteriatoimmersecuttings,haveobviousinduceddisease-resistanteffect.Beforepoplarsproutedinearlyspring,throughsprayingthesolutionoffrostbiteagent,thecontroleffectalsowasobvious.

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Key factors for causing poplar Ice Nucleation Active bacterial canker and its control techniques

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