河南觀賞海棠品種分類研究.pdf

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研究姓名：楚愛香申請(qǐng)學(xué)位級(jí)別：博士專業(yè)：園林植物與觀賞園藝指導(dǎo)教師：湯庚國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