新蹄盖蕨——一个细齿角蕨的不必要组合  

Neoathyrium crenulatoserrulatum(Makino) Ching et Z.R.Wang,One Unnecessary Taxon of Cornopteris crenulatoserrulatum(Makino) Nakai

作　　者：王玛丽[1] 徐皓[1] 郑玲[1] 

机构地区：[1]西北大学生命科学学院西部资源生物与现代生物技术教育部重点实验室,西安710069

出　　处：《西北植物学报》2006年第3期606-609,共4页Acta Botanica Boreali-Occidentalia Sinica

基　　金：陕西省教育厅专项科研基金项目(03JK191)

摘　　要：新蹄盖蕨具有长而横卧的根状茎,其叶轴、羽轴及小羽轴下面被有单细胞短毛及多细胞长毛,孢子囊群裸露、椭圆形或圆形,以及孢子周壁表面具褶皱状突起等特征与角蕨属植物相似;叶绿体DNA trnL-F区序列和rbcL序列分析结果均显示新蹄盖蕨与角蕨属成员的亲缘关系密切;新蹄盖蕨与角蕨属的染色体数目也相同。所有形态特征、细胞学及分子学资料均表明新蹄盖蕨属不成立,该种植物属于角蕨属,应恢复其名称“细齿角蕨”。Neoathyrium crenulatoserrulatum （Makino） Ching et Z. R. Wang has long and recumbent rhizomes ,rachises ,costa and small pinnas covered with unicellular and multi-celluar hairs at their lower parts, oval or round exposed sori and perispore with folded enations, similarly to Cornopteris;the sequencings of trnL-F region and rbcL of chloroplast DNA indicated that Neoathyrium crenulatoserrulatum （Makino） Ching et Z. R. Wang has close genetic relation to Cornopteris members ;furthermore,its chromosome num- ber is the same as that of Cornopteris. All the data about its morphologies and cytology and molecular biology show that it should be categorized into Cornopteris crenulatoserrulatum instead of being classified into Neoathyrium,and retake its original name,＂Cornopteris crenulatoserrulatum （Makino） Nakai＂.

关 键 词：新蹄盖蕨属 新蹄盖蕨 角蕨属 细齿角蕨 

分 类 号：Q949[生物学—植物学]