盐生马齿苋解剖学研究  

Anatomy structures study of Portulaca oleracea

作　　者：王桂芹[1] 陈喀林[2] 段亚军[2] 

机构地区：[1]安徽技术师范学院应用生物系,凤阳233100 [2]赤峰学院,赤峰024001

出　　处：《植物研究》2005年第4期406-409,共4页Bulletin of Botanical Research

基　　金：安徽技术师范学院引进人才专项基金资助项目(ZRC200436)

摘　　要：利用光学显微技术对生长在内蒙古赤峰盐碱地上马齿苋(Portulaca oleracea)的营养器官进行了形态解剖学研究,并用黑土地上生长的马齿苋作了对照。结果表明,不同生态环境中生长的马齿苋解剖结构显著不同,盐生马齿苋具有适应盐渍环境的结构特征,这些特征表现为:营养器官通气组织发达;根的次生结构中木栓发达;根、茎的薄壁组织中含有大量的黏液细胞和糊粉粒;叶片表皮的角质膜厚;叶肉中含晶细胞、叶绿体及贮水组织丰富;而这些特征是黑土地上生长的马齿苋所不具备的。This paper deals with anatomical structures of the vegetative organs of Portula oleracea growing in saline-alkali soil of Chifeng, contrasted to the same species living in black soil, using light microseopical technique. The results showed that it adapted to saltmorphie eireumstanees through the following characters： A lot of aerenchyma existed in the vegetative organs; Phellem highly expanded in roots; thiek cutieula ; more mucilage cells and aleurone grains in parenehyma of roots and stems; A lot of water storing tissue, rieh crystal cells and chloroplasts existed in mesopyll tisses, such characters were not existed in Portulctca oleracea which lives in black soil.

关 键 词：盐生马齿苋 解剖学 盐生结构 生态适应 植物形状 

分 类 号：Q949.745.6[生物学—植物学]