Bt和轉Bt基因棉對棉鈴蟲齒唇姬蜂的影響以及轉基因棉對棉田主要害蟲及天敵的影響.pdf

1、中國農(nóng)業(yè)大學碩士學位論文Bt和轉Bt基因棉對棉鈴蟲齒唇姬蜂的影響以及轉基因棉對棉田主要害蟲及天敵的影響姓名：孫長貴申請學位級別：碩士專業(yè)：農(nóng)業(yè)昆蟲與害蟲防治指導教師：張青文20030601EffectsofBacillusthuringiensisandTransgenicBthuringiensisCoRononCampoketischloridaeUchidaandImpactsofTransgenicColonsonMainPes

2、tsandTheirNaturalEnemiesintheFieldsSunChangguiAbstractEffectsofBacillusthuringiensiscrystalproteinandtransgenic丑thuringiensiscottonontheparasitoid，CampoketischloridaeUchida(Hymenoptera：Ichneumonidae)，andcomparativeimpact

3、softheunivalentandbivalenttransgeniccottonsoumaincottonpestsandtheirnaturalenemiesinfieldswerestudiedResultswereshowedasfoIlowed：ITheartificialdietscontaining丑thuringiensisproteininhigherconcentrationcouldkillthemajority

4、ofcchloridae，mainbecauseitshostcottonbollwonnlarvaehadahighermortalityEffectsofsublethaldoseofBthuringiensisonapproximatelarvalweight、larvaldevelopmentperiod，pupalweightanddevelopmentperiod、adultweightofandadultlongevity

5、ofCchlorideaeweresignificantlydifferentfromthecontrol，although丑thuringiensisinsublethaldoseconditionmightnotcauseparasitoiddeath2Theliquidartificialdietscontainingconcentrationof0pg／g(thecontr01)、25耀鷹and25Hg／gwerefedwith

6、adultfemaleandmaleparasitoidandadultlongevitywasinvestigatedandrecordedAnalyticalresultsrevealedthat置thuringiensishavenodirecteffectsonparasitoidcomparedwiththecontr013HostlarvaeⅥe詫fedwithtransganicBthuringfensiscottonle

7、avesandthecontrolcottonleavesfordifferenthoursbeforeandafterbeingstungbyCchloridaeEffectoftransgeniccottononapproximatelarvalweight、larvaldevelopmentperiod。pupalweightanddevelopment雕村0d、adultweightofandadultlongevityofCc

8、hlorideaewemcheckedResultscouldbedrawnthatwhenfeedingtimebeforeandafterbeingstungwergprolonged，developmentalcharactersofparasitoidwerenotablydi行crentfromthecontr014TheunivalentandbivalenttransgeniccottOnwereexcellentlyre

9、sistanttocottonbollwormintheformerperiodofcottongrowthanddevelopmentMoreovertwoinsect—resistantcottonshadonsignificantdiffereneaButinthelatterperiod，resistanceofbivalentcottonwassignificantlystrongerthanunivalentoneThepo

10、pulationnumbersofmajorityofnontargetpestsintransgeniccottonfieldsweremorethaninthecommoncottonfieldHoweverthepopulationofthemajorityofnaturalenemiesintransgeniccottonfieldswerelessthaninthecontrolfieldThesedemonstratedth

11、eresults：DamagesresultingfromnontargetpestsweremoreseriousandnumbersofpredatorynmuralenemieswerelowerintransgenicfieldsthanincommonfieldThepopulationofpiercingsuckingpestsintransgenicfieldsweresignificantlyhigherthaninco