High clonal diversity in threatened peripheral populations o(5)

Beatty&Provan—ClonaldiversityinH.monotropaPage5of8

10 cm

FIG.2.DistributionofindividualsintheStraidkillyS1,2009population.Dashedlinesenclosemulti-locusgenotypeswhichareidentical.Eachsquarerep-resents10

cm.

andEL4),withmeanvaluesof0.870and0.737inbothyears..LevelsofRcalculatedacrossbothyearsrangedfrom0333(CastleCaldwellpopulationCC5)to0.737(ElyLodgepopulationEL2),withameanvalueof0.552.Theonlysigni -cantdifferenceinH0.596toHEbetweensuccessiveyearswasadropfromHE¼E¼0.417inCastleCaldwellpopulationCC3(two-sidedpairedt-testP¼0.020).TheSpearman’srankcorrelationcoef cientrevealednoassociationbetweenpopu-lationsize(N)andlevelsofHE(rs¼0.289;P¼0.122).Populationsizesbasedonthecapture–recapturecalculationfromMLGsacrossbothyearsrangedfrom1(Straidkillypopu-lationS4)to127(StraidkillypopulationS1).Inbreedingcoef- cients(FIS)rangedfrom0.114(ElyLodgepopulationEL1,2008)to0.813(Castle.CaldwellpopulationCC2,2007),withmeanvaluesof0497and0.339inbothyears.

TheAMOVAanalysesrevealednosigni cantgenetic10 cm

differentiationinpopulationsacrosssuccessiveyears(datanotshown).Signi cantlevelsofgeneticdifferentiationFIG.3.DistributionofindividualsintheElyLodgeEL2,2007population.betweenpopulationswithinlocationsweredetectedin veofDashedlinesenclosemulti-locusgenotypeswhichareidentical.Eachsquare

represents10cm.

thesixanalyses,withbetween7.07%and19.59%ofthetotalobservedvariationexistingbetweenpopulationswithinaregion(Table4).

study(incaseswhereNwasgreaterthan1)rangedfrom20%(ElyLodgepopulationEL3)to85%(ElyLodgepopulationEL4;Table1).

DISCUSSION

Levelsofwithin-populationexpectedheterozygosity(HGeneticdiversityandlevelsofclonalityinperipheralpopulationscalculatedofHypopitysmonotropa

.forpopulationswithN≥5(Table3)rangedfromE)0309(CastleCaldwellpopulationCC2,2007)to0.672(StraidkillypopulationS3,2009),withmeanvaluesof0.507Despiteoccurringinsmall,highlyfragmentedpopulationsinand0.492inbothyears.LevelsofHEcalculatedacrossbothNorthernIreland,Hypopitysmonotropaexhibitedrelativelyyearsrangedfrom0.336(CastleCaldwellpopulationCC2)highlevelsofwithin-populationgeneticdiversity.Theto0.672(StraidkillypopulationS3),withameanvalueofobservedmeanclonaldiversity(R)valueof0.804wasvery0.521.Levelsofclonaldiversity(R)rangedfrom0.571highcomparedwiththeaveragevalueforclonalplants(CastleCaldwellpopulationsCC3andCC5)to1.000(Castle(R¼0.17)reportedbyEllstrandandRoose(1987).ThisCaldwellpopulationCC2andElyLodgepopulationsEL3

gurewasalsoattheupperendoftherangeofmorerecentlypublishedvaluesforunderstoreyherbspecies[0.08,

Uvularia

Downloaded from at Queens University of Belfast on January 21, 2011

百度搜索“77cn”或“免费范文网”即可找到本站免费阅读全部范文。收藏本站方便下次阅读，免费范文网，提供经典小说教育文库High clonal diversity in threatened peripheral populations o(5)在线全文阅读。