茄子砧木对南方根结线虫抗性鉴定与抗性机制分析

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1、山东农业大学硕士学位论文J3数均达到最大值，且赤茄显著高于托鲁巴姆；侵染后期(接种22-26d)，由于赤茄根内J2基本均能发育成J3、J4，因此，托鲁巴姆根内J2数显著高于赤茄，而此时赤茄根内的J4数达到最大值，且显著高于托鲁巴姆，说明南方根结线虫在赤茄上可以正常发育，而托鲁巴姆能够显著抑制南方根结线虫的发育。同时对2个品种根内线虫性别分化的研究表明，赤茄根内线虫发育成雌虫的数量较多，而托鲁巴姆根内的雄虫数量则相对较多，表明南方根结线虫在赤茄根内可以正常繁殖，而在托鲁巴姆根内则繁殖困难。关键词：茄子砧木；南方根结线虫；抗性鉴定；抗性机制3徐小明：茄子砧木对南方根结线虫抗性鉴定及抗性机制

2、研究AbstractRootknotdiseasecouldinhibitgrowthanddevelopmentanddecreasequantityandquanlity,therefore，ithasbeenmadeoneofseriousdiseasesineggplant．Recently,铲m她clutivationusingresisitantrootstockcouldpreventeffectivelyeggplantfromthisdisease．Asaresult，thisexperimentaimingtoevaluateeggplantrootstockfor

3、resistancetoMeloidogyneincognita，examinedgrowthandresistantindexesofeggplantrootstockseedlingsinoculatedby必incognitaandestablishedintegratedevaluationsystemapplyingmultiplescreeningindexesandsystems，futhermore，screenedseveralresistantmaterials．Physiologicalandbiochemicalmechanismsofresistanceto肱

4、incognitawithdifferentresistanteggplantrootstock(SoIanumtorvumandSolanumintegriflium)werestudied．Themainresultswereasfollows：1．Thedifferentrelativegrowthindexesofdifferentorgans，differentresistantindexesofeggplantrootstockseedlingsandtheircoefficientvariancesweredifferentresultedfrominfectionof彪

5、incognita．Coefficientvariancesoffourresistantindexes(GI、EI、RF、DDwere40．30‰101．22％，butthatoffiverelativegrowthindexes口H、SD、RFW、SFW、LFW)wereonly8．290／旷18．85％．Theresultofclusteringanalysiswithgallindex，whichcoefficientvarianceWashigher,wasthesametothatwi也fourresistantindexes，butbothresultscouldjust

6、evaluateresistancenotthetoleranceofeggplantrootstockstoMincognita，andresultshadalittledifferentwiththatofclusteringanalysiswithfiverelativegrowthindexesandrelativerootfreshweight．Subordinatefunctioncouldevaluatetheordcrofresistance(ortolerance)to肱incognita，butcouldnotclassifytheeggplantrootstock

7、sbycapabilityofresistance(ortolerance)．Therefore，applyingmultiplescreeningindexesandsystemscouldaccuratelyevaluateresistance(ortolerance)ofeggplantrootstockstoMincognita．Inviewoftheabove，eggplantrootstocksintheexperimentcoul