菖蒲屬與天南星科及香蒲目的系統(tǒng)關(guān)系探討.pdf

1、湖南師范大學(xué)碩士學(xué)位論文菖蒲屬與天南星科及香蒲目的系統(tǒng)關(guān)系探討姓名：潘月紅申請學(xué)位級(jí)別：碩士專業(yè)：生命科學(xué)植物學(xué)指導(dǎo)教師：劉克明20030401ABSTRACTInthethesis，thesystematicrelationshipsofAcorustogetherwithAraceaeandTyphalesalediscussedonthebasisoffeaturesfrommicromorphologyanatomypollen

2、morphologyandfloraldevelopment，withtheaidofthedatafromtheirembryologycytologychemotaxonomyandmolecularbiologyFirstlyitisfoundthattherearemanyobviousdifferencesbetweenAcorusandAraceaeTheirdifferencesarebasedonmanyaspectsw

3、hichincludecharacteristicsofmorphology，anatomyandepidermisofleaf，typesoftapetuminantherwalls，pattemsofendothecialthickenings，andwaysofdevelopmentofendosperms，presenceorabsenceofperisperm，componentsofphotochemistry，andseq

4、uencesofrbcLThestudiessupporttheviewpointthatAcorusshouldberemovedfromAraceaetoallindependentfamilySecondlyaccordingtothestemandleafanatomy，leafepidermis，pollenmorphologyandfloraldevelopment，itisfoundthattherearenocloser

5、elationsbetweenAcorusandTyphales，especiallyintheaspectoffloraldevelopmentInthecourseoffloraldevelopmentofAcalamus，neitherbracteloeprimordiumnorcommonprimordiumoccursinthewholecourseEadydevelopmentoftheflowerisstronglyuni

6、directionalThreeshieldcarpelsdevelopintoapistilInSparganiumfallax，eachfemaleflowerhasabracteoleThebraeteoleprimordiumandthefloralprimordiumoriginatefromacomplexstructureAsinglesaccatecarpeldevelopsintoapistilInstaminatef

7、lowers，petalandstamenprimordiainitiatespirallyEvidencefromallfieldsindicatesthattherelationsbetweenAcorusandSparganiumavedistantThirdlyitispossiblethatAcorusisinanisolated，primitivepositionamongthemonocotyledonThesystema