不同厚皮甜瓜品種抗病性篩選及BTH、Harpin處理對植株抗病性的誘導(dǎo).pdf

1、甘肅農(nóng)業(yè)大學(xué)碩士學(xué)位論文不同厚皮甜瓜品種抗病性篩選及BTH、Harpin處理對植株抗病性的誘導(dǎo)姓名：張?jiān)伱飞暾垖W(xué)位級別：碩士專業(yè)：果樹學(xué)指導(dǎo)教師：安力20050621SummaryDiseaseresistancescreensondifferentcultivarsandBTHorHarpintreatmentinducesresistanceinmuskmelons(CucumismelonL)Postgraduate：ZhangY

2、ong—meiSupervisor：AssociateProfAnliFivemajorcultivarsinGansuweresampledas’Yujingxiang’，’Huanghemi’，’Elizabeth’，’Keqibiyu’and’Yindi’muskrnelons(Cucum捃me／oL)Thediseaseresistancewasscreenedandpartialmechanismsofresistancewe

3、restudiedafterinoculatedwithsuspensionofErysiphecichoracearumBTHat100mg／Lorharpinat50mg／LwasalsosprayedonplantsandthestudywascardedoutOilinducedresistancemechanismanditseffectonplantgrowthandfruitqualityTheresultsshoweda

4、sbelow：1‘Yujingxiang’and‘Elizabeth’werescreenedasresistantandsusceptiblecultivars，respectively2ActivityofresistantenzymeshadadifierencebetweenresistantandsusceptiblecultivarsPODactivityin‘Yujinxiang’waslowerthanthatin‘El

5、izabeth’PODactivityincreasedmorein‘Yujinxiang’thanthatin‘Elizabeth’；howevernosignificantdifferencewasfoundinPALandCHTactivitiesof‘Yujinxiang’afterinoculationInoculationsignificantlyimprovedthecontentoftotalphenolmsandfla

6、vonoidsLigninaccumulatedmoreintheleavesof‘Yujigxiang’一3SystemicacquiredresistancewasinducedaftertreatedwithBTHorHarpinintheseedlingsof‘Yindi’PODandCHTactivitieswerealsoincreasedandligninacculTlulatedi11theleaves4BTHshowe

7、dbettereffectthanharpinwhencomparedtheincreaseofPODandPALactivitiesinleavesof‘Yindi’and‘Huanghemi’aftertreatment5BTHreducedchlorophyllcontentinleaves，withincreaseofsprayingtimesBTHorharpinsignificantlydecreasedthesinglef