high genetic diversity in taihangia rupestris yu et li, a rare cliff herbn

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1、BiochemicalSystematicsandEcology39(2011)553–561ContentslistsavailableatScienceDirectBiochemicalSystematicsandEcologyjournalhomepage:www.elsevier.com/locate/biochemsysecoHighgeneticdiversityinTaihangiarupestrisYuetLi,ararecliffherbendemictoChina,basedoninter-simplesequencerepeatmarkersa,*b

2、,cbadHong-WeiWang,Xiang-MinFang,Yong-ZhongYe,Yue-QinCheng,Zhao-ShanWangaCollegeofPlantProtection,HenanAgriculturalUniversity,Zhengzhou450002,PRChinabCollegeofLifeScience,HenanAgriculturalUniversity,Zhengzhou450002,PRChinacInstituteofAppliedEcology,ChineseAcademyofScience,Shenyang110016,PR

3、ChinadStateKeyLaboratoryofSystematicandEvolutionaryBotany,InstituteofBotany,ChineseAcademyofScience,Beijing100093,PRChinaarticleinfoabstractArticlehistory:TaihangiarupestrisYuetLiisanendangeredperennialherbendemictoChina.BesidesReceived8April2011beingatanimportantsystematicpositioninthetr

4、ibeDryadeae,italsoisavaluablewildAccepted6August2011flowerresource.Inter-simplesequencerepeat(ISSR)markerswereemployedtoestimateAvailableonline26August2011thegeneticdiversityandgeneticdifferentiationoftenpopulations.Relativelyhighgeneticdiversitywasdetectedatspecieslevels(PPB¼80.43;h¼0.247

5、9;I¼0.3785).MostoftheKeywords:variation(73.51%)occurredwithinpopulations,and26.49%wasfoundamongpopulations;TaihangiarupestrisNei’sdifferentiationcoefficient(Gst¼0.2435)supportedthisresult.TheManteltestGeneticdiversityrevealedasignificantlypositivecorrelationbetweengeographicaldistanceandgen

6、eticGeneticstructureGeneflowdistance(r¼0.611,P<0.001).ThelevelsandpatternsofgeneticdiversityofT.rupestrisISSRwereassumedtoresultfromitsancientoriginandmixedreproductivemodes.Basedontheseresults,bothexsituandinsituconservationareproposed.CrownCopyrightÓ2011PublishedbyElsevierLtd.Allrightsre

7、served.1.IntroductionTaihangiarupestrisYuetLiwasoriginallyfoundin1974andwasformallydescribedin1980astheonlyspeciesoftheTaihangiabelongingtothefamilyRosaceae(YuandLi,1980).T.rupestrisisanendangeredperennialherbendemictoChina,anditsdistributionisrestrictedtotheeastern