苜蓿褐斑病抗性鑒定篩選及抗病機(jī)理研究.pdf

1、甘肅農(nóng)業(yè)大學(xué)碩士學(xué)位論文苜蓿褐斑病抗性鑒定篩選及抗病機(jī)理研究姓名：宋衛(wèi)玲申請學(xué)位級別：碩士專業(yè)：草業(yè)科學(xué)指導(dǎo)教師：魯挺袁慶華200606011肅農(nóng)業(yè)人學(xué)碩1。學(xué)位論文SummaryResistanceIdentificationandBiochemistryMechanismofAlfalfatoCommonLeafSpotSongWellingSupervisedbyProfLuTingInthispapermethodsoffive

2、alfalfacultivarsseedlinginoculationtocommonleafspotwerestudied，Meantime，resistanceevaluationof60materialswereconductedafterinoculationwithPseudopezizamedicaginistoscreenthebestresistantonestocommonleafspotChangesof3enzym

3、e’SactivitiesandtheirrelationshipwithalNlfa’SdiseaseresistancewerealsostudiedtopreliminarilyclarifyphysiologicalandbiochemicalmechanismofalfalfatocommonleafspotTheresultswereasfollowing：1ResearchesoninoculationmethodsSow

4、ingfimgusplantsandsporesprayingaretwoidealplantinoculationmethodswhichcanscreenresistantalfalfavarietiesandplantsquicklyandaccurately2Identificationandscreeningof60materialsThroughidentificationandscreeningof60materials，

5、resultsindicatedthattherearesignificantdifferencesbetweenmaterialsofsalrlevarieties，whichmeanstheforegoingworkwassuccessful，anditalsoprovedthatdiseaseresistancecanbewellreservedandtransmitted謝ththisprocessofresistanceide

6、ntificationscreeningandsingleharvestCorrelationbetweenalfalfa’Sbiologicaltraitsanddiseaseindexwereanalyzed，theresultsshowed：leafwidthofalfalfawasmiddlenegativelycorrelatedtodiseaseindex，andotherbiologicalcharacteristicsw

7、erelowcorrelatedAsaresult，biologicaltraitsdidn’tdirectlycorrelatetOdiseaseindex；therearesomepossibilitiesthatalfalfa’Sdisadvantageouslivingconditioninfluencedtheexpressionofalfalfa’Sdiseaseresistance，Resultsofresistancei

8、dentificationindicated，Saranacsusceptible，Shahesusceptible，ShawansusceptibleandJingyangsusceptiblewerehighsusceptiblematerials；Iroquoissusceptibleand38susceptibleweremiddle—susceptiblematerials；Jingyangresistant，38resist

9、antandShawanresistantweremiddle—resistantmaterials；Iroquoisresistant，SaranaeresistantandShaheresistantwerehigh—resistantmaterialsTheseresultsprovidedthefoundationofmaterialscombinationforhybridizationbreedingprojectofnex