1、復旦大學博士后學位論文紅麻種質資源的遺傳多樣性及分子鑒定技術研究姓名：程舟申請學位級別：博士后專業(yè)：生態(tài)學指導教師：陳家寬20021101ABSTRACTKenaf(HibiscuscannabinusL。)，whichclassifiedinthegenusHibiscus(Malvaceae)，isoneoftheworld’Smosteconomicallyimportantfibercropsandhasagreatpotent

2、ialforitsmultipurposeutilization，inadditiontoitstraditionalusage。Varietalidentificationofkenafisalwaysproblematicandknowledgeongeneticdiversityofkenafvarietiesisalsolimited，whichsignificantlyhinderedoureffectiveutilizati

3、onandconservationofthevaluablekenafgermplasmTheobjectivesofthisstudywereto(i)findapropermethodforidemifyingkenafvarieties；(ii)estimateitsdiversityandgeneticrelationships；(iii)revealoriginanddisseminationofkenafthroughwhi

4、chkenafformeditscurrentdi8tril)utionpatternworldwideMorpho—agronomiccharacters，randomamplifiedpolymorphicDNA(RAPD)markers，andamplifiedfragmentlengthpolymorphism(AFLP)fingerprintingwereanalyzedfordifferentkenafvafiefiesan

5、dalsotwovarietiesofitsrelative，mselle僻sabdariffaVaraltissima)DatafrommorphologicalanalysisshowedthattheevaluatedkenafvarietiescouldbedividedintothreemajorgroupsThecharacters，suchasmiddlestemdiameterwholestalkweight，andda

6、ysto50％flowering，arehighlyresponsibleforthevariationofthekenafvarieties，butitisdifficulttoidentifyindividualvarietiesmerelybythemorphoagronomiccharacters，duetotheirlimitedvariationOntheotherhand，clearlyseparationoftheken

7、afvarietieswasachievedbase硅。ntheRAPDandAFLPfingerprintings，althoughthedetectedRAPDpolymorphiefragmentswererelativelylowTheyprovidedarelatively。lea。pa托emofgeneticrelationshipsamongthecollectedkenafgermptasmTheRAPDanalysis