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中国菟丝子属植物花粉的扫描电镜观察
张芝玉; 郭澄; 苏中武; 李承祜;   
1.第二军医大学;2.第二军医大学 上海 200433;3.上海 200433
摘要:
本文作者用扫描电镜(SEM)对国产菟丝子属(Cuscuta L.)10种植物的花粉形态进行了观察。具3沟萌发孔的花粉为本属基本类型。根据萌发孔的数目,外壁纹饰等特征,该属花粉可划分为三个类型:(1)具3沟,外壁具穿孔,表面散生小刺状突起;(2)具3—5沟,外壁具网状纹饰,网脊上散生小刺状突起;(3)具3—6沟,外壁具小刺状突起,穿孔偶见。本文观察结果与刘炳仑等曾报道过光学显微镜(LM)下的结果不完全一致。最后,对菟丝子属的花粉形态的演化趋势以及属内亚属间关系进行了讨论。
关键词:  菟丝子属  花粉形态学  扫描电镜  
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