小檗科黄芦木和安徽小檗的叶片特征及其地理分布  

Leaf characteristics and geographical distribution of Berberis amurensis and B. anhweiensis of Berberidaceae

作　　者：施小平[1] 袁森[1] 李新华[1] 邢桂培[1] 

机构地区：[1]南京农业大学生命科学学院,南京210095

出　　处：《浙江大学学报（农业与生命科学版）》2016年第6期687-693,共7页Journal of Zhejiang University:Agriculture and Life Sciences

基　　金：国家自然科学基金(31170174)

摘　　要：为了进一步揭示近缘种黄芦木(Berberis amurensis)与安徽小檗(B.anhweiensis)的种间关系,通过野外调查取样及实验分析方法,研究它们的叶片形态与微形态特征,及其地理分布式样。结果显示:黄芦木和安徽小檗的叶片形状相似,两者叶缘具密集的细刺齿、网状脉序,叶片上表皮细胞平周壁轮廓呈近似的四边形至六边形、垂周壁波状或近平直,叶片下表皮具无规则型和辐射型气孔器,两者叶表皮蜡质层纹饰类型相似;并且,黄芦木和安徽小檗基本上存在连续的地理分布式样。此外,已有研究表明,2种植物在花序类型、果实形态等主要分类学特征方面也基本相同。因此,将安徽小檗处理为黄芦木的异名。Summary Within the genus Berberis L.,B.amurensis Rupr.and B.anhweiensis Ahrendt are easily confused in the main taxonomic characters,and the demarcation between these two species usually depends on the site information of their living plants or specimens. In order to further reveal their interspecific relationship,the leaf morphological and micromorphological features of B.amurensis and B.anhweiensis were studied by means of field surveys and experimental observation,and their geographical distribution patterns were also mapped and analyzed based on specimen check and literature analysis. The results showed that,although the leaf shape of both B.amurensis and B.anhweiensis varied greatly, continuous variation patterns still existed in both species,and obvious similarities were found between the two species in features of leaf shape,dense spinescent teeth on the leaf margin,and the reticulate venation.Light microscopy observation showed that,the outline of the periclinal walls of the leaf adaxial epidermal cells was approximately tetragonal to hexagonal in both B.amurensis and B.anhweiensis,but the anticlinal walls of the leaf adaxial epidermal cells were undulate or approximately straight in B.amurensis,and nearly straight or slightlynbsp;undulate in B.anhweiensis.The outline of the periclinal walls of the leaf abaxial epidermal cells was irregularly polygonal in B.amurensis,and its anticlinal walls were undulate.The outline of the periclinal walls of the leaf abaxial epidermal cells was regularly polygonal in B.anhweiensis,and its anticlinal walls were nearly straight or slightly undulate.Both the two species were hypostomatic,and their stomata were all actinocytic and anomocytic. Scanning electron microscope observation revealed that,the leaf adaxial epidermis of B.amurensis was nearly smooth,or was covered with dense granular wax ornamentation,and the outline of the periclinal walls of the epidermal cells was irregularly polygonal,and the anticlinal walls were undulate;the leaf abaxial epidermis was nearly smo

关 键 词：小檗属 叶片 形态 微形态 地理分布 新异名 

分 类 号：Q949.746.8[生物学—植物学] Q944.1