浙江大学2012植物学甲课件 第06次课2008ppt第35到68页

1,(5)雄蕊形态,2,3,(6)雌蕊形态,4,(7)子房形态,5,6,(8)胎座形态,7,2.Flowerbuddifferentiationanddevelopment花芽分化和发育,1234,桃花芽分化1.萼片原基；2.花瓣原基；3.雄蕊原基；4.雌蕊原基,8,一种毛茛花芽在雌蕊形成初期的分生组织,9,1=sepalprimordium;萼片2=petalprimordium;花瓣3=stamenprimordium;雄蕊4=carpelprimordial;心皮5=procambium；原形成层,Floralorgandevelopmentinperiwinkle(Vincaminor)长春花的花芽分化,10,11,12,13,Inflorescencesareinitiatedinafloralapexinthesameacropetalsequenceasinflowers.花序的分化也是向上的.,showingtheinitiationandearlydevelopmentalstagesofacompoundumbel（复伞形花序）anditsflowersincarrot(Daucuscarota胡萝卜),Patternofinflorescenceandflowersdevelopmentinthehead.头状花序TheyoungestflowersareinthecenterfoundinCalendulaofficinalis（金盏菊）Notetheunusuallywidemeristem.,14,Patternofinflorescenceandflowersdevelopmentincomplexspike.复穗状花序和花发育的模式,A生长锥；B.生长锥伸长期;C.苞原基分化期（单棱期）;D.小穗分化期开始;E.小穗分化期末期;F.颖片分化期;G.小花分化期;H.一个小穗（正面观）;I.雄蕊分化期;J.雌蕊形成期.苞原基;.小穗原基;.颖片原基;.小花原基;.雄蕊原基;.雌蕊原基,15,16,17,Cross-sectionalviewofgooseberry（Ribessp.）flower,showinganthersparts醋栗花横切示花药结构Fiveanthers,eachwithfourpollensacs(花粉囊）(microsporangia，小孢子囊),bearingpollengrainsareshown.,1=connective;药隔2=anthervascularbundle;花药维管束3=pollensacwall;花粉囊壁4=style;花柱5=petal;花瓣6=sepal萼片,18,(2)Structureanddevelopmentofanther花药的发育与结构,A-E.花药的发育过程；F.一个花粉囊放大，示花粉母细胞;G.已开裂的花药，示花药的构造1.原表皮；2.孢原细胞；3.造孢细胞；4.纤维层；5.绒毡层；6.中层；7.花粉母细胞；8.药隔维管束；9.药隔基本组织；10.花粉;11.表皮,19,Developmentprocessofmicrogametophyteoffloweringplants有花植物雄配子体发育过程（1）,20,表皮,药隔基本组织,药隔维管束,药室内壁,中层,绒毡层,花粉母细胞,未成熟花药的结构,21,a、表皮；b、药室内壁；c、中层；d、绒毡层,22,Developmentprocessofmicrogametophyteoffloweringplants有花植物雄配子体发育过程（2）,23,药隔维管束,表皮,药隔基本组织,花粉粒,纤维层,成熟花药的结构,24,(3)花粉母细胞发育形成花粉粒,25,1）Meiosis减数分裂,26,花粉母细胞,小孢子四分体,27,四分体：,田字型四分体,四面体型四分体,28,2）花粉粒的发育,29,3）成熟花粉粒的结构,30,4）成熟花粉粒的类型,二胞花粉粒,三胞花粉粒,31,扫描电镜下的花粉粒形态,32,D.Act