福建殼斗科植物核型及親緣關(guān)系分析.pdf

1、福建農(nóng)林大學(xué)碩士學(xué)位論文福建殼斗科植物核型及親緣關(guān)系分析姓名：王妍申請學(xué)位級別：碩士專業(yè)：森林培育指導(dǎo)教師：陳輝2003.4.1望堡壅蘭型墮塑簍型墨鲞整差墨坌塹。，AbstractSpeciesofFagaceaethattheirtimberbarkfmitsandleaveshaveimportantvalueatmostlydistributedineveryprovinceinChinaSothispaperthatresear

2、chedthemincelllevelhasimportantsignificationStudyingonthechromosomenumberthenumberandpositionofSATthekaryotypeformulae，thekaryo奄tpe，armratiomlativedlength，indexandkaryotypicasymmetryele，theorigirl，systemicevolutiOntaxono

3、myandcro％breedingofseventeenspeciesofsixgeneraofFagaoeaehavebeenanalysed。The嘲堪ts撇lisledasfollows1ChromosomenumbersofbodycellforeightspeciesofCastanopsisareall2n8e24，andallconsituteofmetacentricandsubmetacentricchromosome

4、sonlychangedinnumberfordiffemmspecies，andallbelongtoSlebbins2Btype；CastanopsistibetanaCastanopsiscarlesiLandCastanopsissclerophyllafor2pairsSATCastanopsisfissaandCastanopsislamontiiforlD蔽囂SATandCastanopsisfordii，Castanop

5、sisfabriandCastanopsisjucundafornoSATbutthedifferentpositionoftheirSATinchromosomesOthercharacteristicsuchasaveragearmratiotheratioofthe10ngestchromosometotheshortestindexjndexofthekaryotypicasymmeWyandtelativedlengthran

6、gedWithillsmallextension。ButtherearcsortiedifferenceintheCOnStituteofrelativedlengthSotheconclusionfromaboveanalysisshOWSCastanopsishassimilaroriginandcloserrelationship。2ThechromosomenumbersforthreeSpeciesofCyclobalanop

7、sisareall2n=24，and2pairsSATtoCyclobalanopsisglanca，lpairsSATtoCyclobalanopsisgracilisandCyclobalanopsisImchytomafornoSATTheirkaryotypeformulae辯presentedaSfollows：Cyclobalanopsis掣auca：k(2n)=20m(4SAT)4sm；Cyclobalanopsisgra

8、cilis：k(2nll=20m4sm(2SAT)；Cyclobalanopsispachyioma：k(2n)=22m2sm；TheirkaryotypeallbelongtoStebbins2BtypetTheratioofthelongestchromosometotheshortestrangein278～320Andinde端indexofkaryotypicaSymmetryandrelativedlengthchanged

9、indistinctly3ThechromosomecomplementofFaguslongipetiolataofFagusis2n=24=20m(2SA∞州SillAveragearmratio，theratioofthelongestchromosometotheshorlesLindexandkaryotypicaSymmetryare135，364，4360％and56塒％respecfivelylItskaryotypeb

10、elongstoStebbins2BtypeRelativedlengthrangewithin421～1534％4TheclromosomocomplementofLithocarpusharlandiiis2n=24=20m(2SAT)4smtThearmratiangem108～181。withoutarnlratio2，SOitbelongto1BtypeThemlafivedlengthrangein507～1173％。The

11、ratioofthelongestchromosometotheshortestaverageindexindexofkatyotypicasymmetryare2。31。4387％and5573％，respectively5Theresultfromclusteranalysisandcomparingthecharacteristicamonggenerashowsthatowingtothekaryotypesimilaritya