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1、PreferenceevaluationofSyleptaderogateFabriciusoncottonandAbutilontheophrastiMedicAdissertationSubmittedaspartialfulfillmentoftherequirementsfortheDegreeofMasterwithmajorinAgriculturalEntomology＆PestControlInY肌gzllouUnive

2、rsityCandidate：ChenLingSupervisor：ProfessorYangYizhongOctober，2013Yangzllou，China揚州大學(xué)碩士學(xué)位論文AbstractII—SyleptaderogateFabricius，oneofpolyphagousinsectpestswidelydistributesinChinaInrecentyears，＆derogatehasdoneincreasingly

3、seriousharminsomeofthecotton—growingareasandbecomeoneofdorminantleafeatingpestsinYangtzefiverregionwiththewideplantingoftransgeniccottonAndAbutilontheophrastiMedicisthemainimtermediatehostofInthispaper，hostpreferenceofSd

4、erogatefemaleforegglayingwasstudiedusingconventionalcottonSimian3andAtheophrastitoexplorerthefunctionofchemicalsignalsduringhostselectionof&derogateadultAndinfluenceofthesetwohostplantsonSderogatepopulationgrowthThemainr

5、esearchresultsarefollows：Effectsofhost(Simian3andAtheophrasti)onpopulationgrowthofSderogatewerestudiedResultsshowedthatsderogatelarvaedeveloped12dfasterinA。theophrastithanonSimian3Andthesurvivalratereached5187—5643％highe

6、rthanthatonSimian3(4129—4434％)TheindexofpopulationincreaseofSderogatefedwithAtheophrastiforthreesuccessivewere4123、3849and3422，significantlyhigherthanthoseofSderogatefedwithcottonwhichwere25322370and2237respectivelyInsho

7、rt，AtheophrastihadhigherfitnesstoSderogate，whichismorebeneficialitspopulationincreaseTheresultsofcageovipositiontestresultsshowedthataSderogatefemaleeggslaid678058eggsonSimian3，whichwassignificantlylessthanegglaidonAtheo

8、phrasti(11534069)YtypeolfactometertestalsoshowedthattheAtheophrastistronglyattracted＆derogate。VolatileorganiccompoundscollectedinSimian3atthebuddingstageAtheophrastiatblossomstagewereanalysedandidentifiedusingthegaschrom

9、atography—1nasSspectrometry(GC—MS)Twenty—fourkindsofchemicalcomponentswerefoundfromSimian3plantvolatiles，and23kindsfromAtheophrastiSderogatefemalehadobviouselectrophysiologicalresponsesto2ethylacetophenoneand3一ethylhepta

10、neamong5testedsubstancessuchas2ethylacetophenone，3一ethylheptane、Decane，cyanoaceticacidand2methylpiperazineusingEAGtechnologyExperimentalresultsshowthattheattractiveeffectsofAtheophrastionSderogate，thisprovidesanewideafor

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