蜘蛛抱蛋属植物叶表皮微形态的扫描电镜观察  

Studies on the micromorphology of leaf epidermis of the genus Aspidistra under SEM

作　　者：王任翔[1] 周巧劲[1] 李光照[2] 蒋巧媛[2] 张义正[3] 

机构地区：[1]广西师范大学生命科学学院,广西桂林541004 [2]广西壮族自治区中国科学院广西植物研究所,广西桂林541006 [3]四川大学生命科学学院,成都610064

出　　处：《广西植物》2007年第1期40-43,共4页Guihaia

基　　金：教育部高等学校重点实验室西部地区高级访问学者基金~~

摘　　要：在扫描电子显微镜下,观察9种蜘蛛抱蛋属植物的叶表皮微形态。结果表明,9种植物叶下表皮的细胞都为长方形,垂直壁为直的,垂周界限为凸的,外层周壁凹陷。气孔椭圆形至卵圆形,气孔外拱盖表面多平滑,其内缘近平滑、浅波状或锯齿波状;角质膜多为脊状条纹、有的外层周壁有横纹或颗粒。气孔大小与染色体的倍性有一定的正相关关系。不同种间叶表皮特征表现出一定差异,对种的划分有一定的分类鉴定意义。The leaf epidermis of 9 species in the genus Aspidistra were examined through scanning electron microscope（SEM）. All the species were characterized by having abaxial epidermis consisting of rectangular or rhombic cells,with the radical and tangential walls being straight. The shapes of the stoma were ovate or elliptic. Ornamentation of outer stomatal rim was often smooth. The inner margin of the outer stomatal rim was nearly smooth or sinuolate,and the cuticular membrane of the leaf epidermis was often sinuolate or straited. The stomatal size was positively related with the chromosomal ploidy. Some differences were found among the 9 species,therefore,SEM characters of the leaf epidermis were of certain taxonomic significance.

关 键 词：蜘蛛抱蛋属 叶表皮 微形态 扫描电子显微镜 

分 类 号：Q944.56[生物学—植物学]