【摘要】 以长春地区委陵菜属朝天委陵菜(Potentilla supina L.)、匍枝委陵菜(P.flagellaris Willd.ex Schlecht.)、委陵菜(P.chinensis Ser.)为试材,利用石蜡切片技术对3种植物叶片结构进行了比较解剖学研究,旨在了解其叶片结构差异,为委陵菜属的分类及开发、利用和资源保护提供理论参考依据。结果表明:3种植物叶片类型均为异面叶,三者叶片表皮细胞的形状、叶肉栅栏薄壁组织与海绵薄壁组织、维管束结构均存在显著差异。气孔类型均为无规则型。3种委陵菜的气孔密度大小顺序为委陵菜>朝天委陵菜>匍枝委陵菜;气孔指数大小顺序为匍枝委陵菜>委陵菜>朝天委陵菜;三者的栅海比分别是1.32、1.17、2.09。更多还原

【Abstract】 The paraffin section method was used to compare the leaf anatomical structure of Potentilla supina L.,P.flagellaris Willd.ex Schlecht.,P.chinensis Ser.in Changchun.The leaf anatomical structure was different among the three species.The theoretical basis was provided for the development,utilization and protection of natural resources and taxonomy.The results showed that the leaf type of three species was allogeneic-type leaves.The differences in epidermal cell shape,palisade parenchyma and sponge parenchyma,and the vascular bundle were also reflected the adaptation of plants to the environment.The leaf stomata type of three species of Potentilla L.was irregular-type.The stomatal density,P.chinensis>P.supina>P.flagellaris.The stomatal index,P.flagellaris>P.chinensis>P.supina.The thickness ratio of the palisade parenchyma to the sponge parenchyma of the three species of Potentillais 1.32,1.17,2.09.更多还原