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1、THESISOFMASl-ER’SDEGREE!唑坐!坐!塑型竺!魚!!!豎竺!生塑竺!!!堅型墮型墅竺!苧AbstractInthispapeLbasedonthespecimenexaminationinmanyherbariaandfieldinvestigation,thegermplasmresourcesofZanthoxylum.nitiduminGuangxiarerevised.Thevariationofmorphologicalcharactersofthetwovariatiesandthreet
2、ypesofz.nitidum(Roxb.)DC.isanalyzed,themicro—morphologyoftheleafletandnerveisobserved,thechromosomekaryotypeisresearched,andtheecologicalcharactersandgeographicdistributionareanalyzed.Thecontentofnitidinechlorideandneoherculinin13samplesofZnitidumfromdifferentare
3、asand8samplesofcounterfeits(orsubstituents)materialsisdetermined.Aftercollecting50germplasmresourcesofZnitidum.descriptorsanddatastandardforthegermplasmresourcesofZnitidumiscompiled.1FieldlnvestigationByfieldinvestigation,itisshowedthattherewere18differentspecies
4、andvariatiesusedaslocalmaterialofRadixZanthoxyliinGuangxi.TherealoriginplantZ.nitidumhastwovafiatiesnamedz,nitidum(Roxb.)DC.var.nitidum,whichismadeofthreetypestoo,andz.nitidum(Roxb.)DC.var.tomentosumHuang.Theyareallmajorusedasmedicinalmatedals.TheUSedamountofz.ni
5、tidumvar.tomentosumiSmorethanthatofz.nitidum(Roxb.)DC.Throughthesurvey,itcallbeassessedthattotaldepositofwildresourcesofZnitidum(dryweight)isabout2600ton.Theresourceisobviouslyingreatshortage.2AnalysisonthemorphologicaltraitsTheexperimentresultsshowthecharacterso
6、fplantmorphologyofZnitidumarerelativetothegrowinglandformconditionoftheplant.But4lHEjl3UrM^SlLK3DEI.ilCdEE£堡堡墨望!!!!竺塑!竺!篁!!矍!竺型叁塑!!!堅型!受!型墅竺竺thereisnoobviousdistinguishonplantmorphologicbetweenZ.nitidumvaEnitidum(includingthreetypes)andz.nitidumvar.tomentosum,the
7、differenceofmorphologicalcharacterofeachvariatyandtypeismainlyonleaftextureandpubescenceonthesurfaceofplant.Theleaftextureisthefirsttaxonomiccharacterbecauseofitsstabilizationamongthetype,andthecharactersofprickle,leafmargin,fruitsizeandoildot,whicharenotthestabl
8、ewithinthetype,shouldbetreatedcarefully.Anditstillneedsfurtherstudiesonthetaxonomicvalueoftheflowermorphologicaltraits.3Studyonthemicro-morphologyoftheleafletI