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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
