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1、南京林業(yè)大學(xué)博士學(xué)位論文河南觀賞海棠品種分類(lèi)研究姓名:楚愛(ài)香申請(qǐng)學(xué)位級(jí)別:博士專(zhuān)業(yè):園林植物與觀賞園藝指導(dǎo)教師:湯庚國(guó)20090601ResearchontheCultivarClassificationofOrnamentalCrabapplesinHenanAbstractCrabapple(Malusspp)hadalreadybeencultivatedmorethan2000yearsinourcountryandhadfor

2、medagreatdealofcultivarsThecultivarsofornamentalcrabappleinHenanwereclassifiedsystematicallyaimingatestablishingarationalcultivarclassificationsystemThemainresultsweresummarizedasfollows:Basedonthestudyofcrabappleappeara

3、nce,thecommonorderlinessofmophologicalevolvementhasbeendiscussedAcriteriaandterminologyfordescribingcultivarsarerevisedbasedonamorphologicanalysisofthevariationandevolutionarytrendAdoptedthesystemoforiginatedspecies,Grou

4、psandcultivars,thefloweringcultivarclassificationsystemsofMhupehensisandM,micromalllShavebeenbuiltupBasedonoriginatedspeciesthecultivarclassificationsystemsofornamentalfruitingcrabapplehavegeenbuiltupforthefirsttimeInthi

5、spaper137eultivarswererecognized,including66eultivarsofornamentalfloweringcrabapple,52cultivarsofornamentalfruitingcrabappleand19cultivarswhichwereintroducedfromothercountry;Keysfordistinguishingcultivarswerecompiled;82c

6、ultivarswererecordedanddescribedasnewincluding40floweringerabapplecultivarsand42fruitingerabappleeultivars;16cu!tivarnamesweredealtwithandmergeredThegeneticrelationshipof137crabapplecultivarswasstudiedbymeansofnumericalt

7、axonomicmethodTheclusteringresultscanbeinaccordancewiththeclassifiedwaysapplyingontheappearanceButtheascriptionof‘DahuaDanban,wasoppugnedForthefirsttime,anewmolecularmarkertechnique(SRAP)wasappliedtotheresearchontheculti

8、varclassificationofornamentalcrabappleTheresultsshowedthattherelationshipiscloseamongcultivarswhichareoriginatedinChina,buttherelationshipiSfarawaybetweeneultivarswhichareoriginatedinChinaandinothercountyTherelationshipi

9、snearcomparelybetweencultivarswhichhaveuprightbranchandinclinedbranch,butitisfarfromtheweepingcultivarsTherelationshipisquitenearamongcultivarswhicharebelongedtoMhallianabutitiSfarfromthecultivarswhicharebelongedtoothers

10、peciesSimultaneity,theeultivarsofeveryspeciesarenotdividedintoeachGroupastheaboveclassificationsystem,buttheyarepolymerizedacrosseachotherSotherelationshipamongcultivarsiscomplicatedrelativelyKeyWords:Henan;crabapple;cul

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