1、東北農(nóng)業(yè)大學(xué)碩士學(xué)位論文酚酸類物質(zhì)對(duì)鹽分脅迫條件下黃瓜幼苗生理特性的影響姓名：王華申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：蔬菜學(xué)指導(dǎo)教師：吳鳳芝20051213東北農(nóng)業(yè)大學(xué)農(nóng)學(xué)預(yù)jj學(xué)位論文AbstractThisstudytookcucumber(ShandongMICllaStheresearchmaterial，added200mmol／LNaCLsolutiontothenutritionbowlonthefirsteuphyllatimean
2、dthefourtheuphyllatimerespectivelyandfromtheflrsteuphyllatimetothefortheuphyllatimechoosetwokindsofexogenousphenolicacids(PhydroxybenzoicandCinnamicacid)wjchdiffbrentconcentration(25umol／L，50umol／L，100umol／L)，inordertost
3、udytheeriectsofsaltstressonthegrowthofcucumberseedlingsandtheeffectsofexogenousphydroxybenzoicandCinnamicacidonDhysiologicalcharacteristicofcucumberseedlingsunderthesaltstressThetestfirstlystudiedthecatabaticeffectsofsal
4、icylicramificationCinnamicacidoncucumberseedlingsundersaltstress；andascertainedthebestconcentrationandthebesttime，Thestudyprovidedthetheorybasisforresolvedthesoilsalinizationjntheestablishmentplantingitishi曲erappliedvalu
5、eTheresultsofthestudyareasfoIlows：1TwokindsofexogenousphenolicacidsincreasedtheactivitvofSODandPODundersaltstressthetreatmentwhichthetreatmentconcentra“onis50umol／Landthetreatmenttimeisonthesecondeuphyllatimeisbestthanot
6、hers，thedifferencereachedtothebestsignificant，buttheactivityofSODandPODwithtreatmentof100umol／LphenolicacidsconcentrationisnotsignificanttheactivityislowerthanCKl，theeffectisnotgood2Phenoliccompounddecreasedtherelativeco
7、nductanceandMDAcontentofcucumberseedlingsundersaltstress，andthetreatmentwhichthetreatmentconcentrationis50umol／Landthetreatmenttimeisonthesecondcuphyllatimeisbestthanothers，thedifferencereachedtothebestsignificant3Thecat
8、abaticeffectofCinnamicacidisbetcerthanthatofphydroxybenzoicweanalyzedtheresultsofSOD，POD，MDAandREC，althoughthecatabaticeffectofCinnamicacidandphydroxybenzoicisobvious，theeriectofCinnamicacidisbeneL4Comparedtheeffectsoftr
9、eatmentswithsaltsolutionfirstlyandlastlythedifierencesofthecontainingwaterquantityandthechlorophyllcontentarenotobvious，throughtheanalysisofresultsofSOD，POD，MDAandREC，wecanfoundthattheearliersaltharmsymptomoftreatmentsof
10、saltsolutionaddedlastlyisobvious，thedifferencewitt；treatmentsofsaltsolutionaddedfirstlyjsobvious，butatthedeterminingmidandanaphase。thedifferencejsnotobviousandwi也thetreatmenttimeprolonged，tilecatabaticeffectisobvious5Thr
11、oughtheanalysisofresultsofSOD，POD，MDAandRECatthefourtheuphyllatime，thecontainingwaterquantityandthechlorophyllcontentofA22andB22arehigherthanCKl，PhenoliccompoundimprovedtheactivityofSODandPOD、atsametimedecreasedtheMDAcon