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安徽黄精属(Polygonatum)植物叶表皮研究
郑艳; 王洋; 周海滨; 徐如松; 李阿山; 张定成;   
安徽师范大学生物系!安徽芜湖241000
摘要:
利用光学显微镜及扫描电子显微镜观察了安徽省黄精属9种植物的叶表皮;统计并测量了气孔类型、气孔大小、气孔密度及气孔指数等;描述了表皮角质膜、蜡质纹饰、气孔的形状及气孔外拱盖等有关特征。结果表明:黄精属植物叶表皮气孔器类型属只有2个保卫细胞而无任何副卫细胞的单子叶植物气孔器类型。气孔的某些特征,如气孔器类型、气孔器分布特征、表皮细胞形状及垂周壁式样、角质层及蜡质纹饰等在种间差异不大,可作种间区别的次级特征用。
关键词:  黄精属  叶表皮  气孔器  
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