巴山松與油松的遺傳分化和地理分界研究.pdf

1、西北大學碩士學位論文巴山松與油松的遺傳分化和地理分界研究姓名：程珵申請學位級別：碩士專業(yè)：植物學指導教師：劉占林20100524Stud‘esongeneticdifferenti‘‘onmdtudIesgenetderentat10nandICIIgeographicaIboundaryamongPinushenry，Mastand尸tabuliformisCart(Pinaceae)popuIationsAbstractQinlin

2、g—DabaMountainsgeographicallydivideChinaintowaimtemperatezonetothenorthandthesubtropicalzonetothesouthItisalsothebarrierandtransitionalzoneamongmanyspeciesThelandscapegeneticsresearchcarriedoutontheQinlingDabaMountainsca

3、nbeusedtoexplorethegeneticbasisoftransitionzone，andinthecurrentclimatefluctuations，也estabilityandlikelychangesofQinlingDabaMountainstransitionAtthesametimewearealsoabletevealthepossibleimpactoftheclimatictransitionzoneon

4、theformationofspeciesInthisstudyweusetheexampleofPtabuliformisand尸henryitoelucidatethepopulationgeneticstructureandgeographicdifferentiationofthetwospecies，toanalysethegeneticrelationshipoftwospecies，andtoprovidereferenc

5、eforrevealingtheimpactofecologicaltransitionalqualitiesonthespeciesdifferentiationinQinling—DabaMountainsareas111egeneticanalysisof29populatiOIlS747individualsWasanalyzedbytenmicrosatellitesitesandwefoundthatthetwospecie

6、srevealarelativelyhighlevelofgeneticdiversityfHe=089171inthe、訂ndpollinatedoutcrossingoftreespecies，andshowobviouslydistinctgeneticdifferentiation(Fst=03511)amongpopulationsItmightbeattributedtocomplexhabitat，intermittent

7、decentralizationhistoricalbottleneckeffectinbreedingsystem，andtheadaptationtolocalenvironmentsThegeneticdistancebetweenpopulationsWasnotcorrelated淅tllgeographicdistanceO=00886，P=O3)PhenryimainlyexistsinDabaMountainswhile

8、PtabuliformisdistributesprimarilytothenorthofQinlingMountainswitllsomeremnantsinWulingandDabaMountainsGeographicalboundariesl皤etweenPhenryiandPtabuliformismainlyexistinthejunctionsofOinlingMountains，DabaMountainsandWulin

9、gMountainsExtensiveintrogressionexistsinPtabuliformisandPhenryiinwhichseveralpopulationsliedontheborderhaveuniquegeneticcomponents，probablyresultedfromdrasticallyinterspecifichybridizationKeywordsPhenryi，Pmbul折ormis，nuSS