12313.基于cpdna序列的石蒜屬種間關(guān)系研究

1、內(nèi)蒙古農(nóng)業(yè)大學(xué)研究生學(xué)位論文獨(dú)創(chuàng)聲明本人申明所呈交的學(xué)位論文是我本人在導(dǎo)師指導(dǎo)下進(jìn)行的研究工作及取得的研究成果。據(jù)我所知，除了文中特別加以標(biāo)注和致謝的地方外，論文中不包括其他人已經(jīng)發(fā)表或撰寫過的研究成果，也不包括為獲得我?；蚱渌逃龣C(jī)構(gòu)的學(xué)位或證書而使用過的材料，與我一同工作的同志對本研究所做的任何貢獻(xiàn)均已在論文中作了明確的說明并表示謝意。申請學(xué)位論文與資料若有不實(shí)之處，本人承擔(dān)一切相關(guān)責(zé)任。論文作者簽名：』趟盎日期：2旦!竺：生：!f

2、內(nèi)蒙古農(nóng)業(yè)大學(xué)研究生學(xué)位論文版權(quán)使用授權(quán)書本人完全了解內(nèi)蒙古農(nóng)業(yè)大學(xué)有關(guān)保護(hù)知識產(chǎn)權(quán)的規(guī)定，即：研究生在攻讀學(xué)位期間論文工作的知識產(chǎn)權(quán)單位屬內(nèi)蒙古農(nóng)業(yè)大學(xué)。本人保證畢業(yè)離校后，發(fā)表論文或使用論文工作成果時(shí)署名單位為內(nèi)蒙古農(nóng)業(yè)大學(xué)，且導(dǎo)師為通訊作者，通訊作者單位亦署名為內(nèi)蒙古農(nóng)業(yè)大學(xué)。學(xué)校有權(quán)保留并向國家有關(guān)部門或機(jī)構(gòu)送交論文的復(fù)印件和電子文檔，允許論文被查閱和借閱。學(xué)?？梢怨紝W(xué)位論文的全部或部分內(nèi)容(保密內(nèi)容除外)，采用影印、縮印或其

3、他手段保存論文。論文作者簽名：望塹盥盎指導(dǎo)教師簽名：遮壘丑易PhylogeneticRelationshipsofGenusLycoris(Amaryllidaceae)InferredfromChloroplastDNASequencesAbstractTheLycorisHerbisaperennialherbaceousplantwhichbelongstoAmatTllidaceaewithapproximately20spec

4、ies，distributedmainlyinChinaJapanandKorea，scatteredlyinIndiaandNepalThereare16speciesand1varietasinChinaand也ezoneofsouthoftheYangtzeRiveristhediversificationandabundancecenterofthiscategoryofplant，amongwhich10speciesaree

5、ndemicDuetotheextensivecrossfertilizeoftheLycorisHerbundernaturalcondition、thereexistreasonablequantitiesofnaturalcross—fertilizespecieswithinthecategoryotherclassificationmethodsdifficulttoidentifytheclassificationofLyc

6、orisThechloroplastDNAismonolepsiswhichplaysa11importantroleinidentifyingreticulateevolutionofplants，thisexperimentisbasedonthepreviousstudyandresearchesthegeneticrelationshipamongtheLycorisaswellastheoriginofcrossfertili

7、zebychloroplastDNAsequencesAtthespecieslevel，thisresearchchooses15species，4varietasand2aritificialhybirdsoftheLycoris；Atthepopulationlevel，thesespeciesandvarietasinclude29populationsdistributedinChina，KoreaandJapanBymean

8、sofanalyzingthesematerialsusingthetmCycf6andtmS—trrffMfragments，itwellrevealsthegeneticrelationshipamongtheLycoris，especiallytheoriginofnaturalhybirds：(1)BasedontheresultsofchloroplastDNAsequencesanalysis，atthespecieslev

9、el，theLycorisisresolvedwiththreeclades：Thespecies謝t11chromosomeM(Centralcentromere)andchromosomeT(Endcentromere)existinthesamecladeI；ThespecieswithchromosomeST(Proximalcentromere)constitutetheothertwocladesIIandIII；Thesp

10、ecies(“hybirds”，including2aritificialhybirds)vvimchromosomeM，chromosomeSTandchromosomeTdistributeinthreeclades(2)IncombinationwiththepreviousITS(Nucleargenome)resultsandtWOaritificialhybirdswhosebackgroundisclearthisrese

11、archconfirmsthatthe“hvbird’：withchromosomeM，chromosomeSTandchromosomeTistheoriginofcrossfertilizeThisstudywellrevealstherelationshipofsystemdevelopmentbetweenthespeciesoftheLycorisandtheoriginofpolyploidpopulation’Scross

12、—fertilizeusingchloroplastDNAsequenceswhicharesinglegeneticMoreoveritestablishesanelementaryscientificfoundationofthestudyoftheLycorisjsystemevolutionandspeciationKeywords：，‘a(chǎn)diata“interspecificrelationship；phylogeogT“ap