江苏铁角蕨的系统位置和多倍体起源  

Systematic Position and Polyploid Origin of the Fern Asplenium kiangsuense(Aspleniaceae)

作　　者：常艳芬[1,2] 李捷[1] 陆树刚[3] Harald Schneider 

机构地区：[1]中国科学院西双版纳热带植物园植物系统发育与保护生物学实验室,云南昆明650223 [2]中国科学院大学,北京100049 [3]云南大学生态学与地植物学研究所,云南昆明650091 [4]Botany Department,Natural History Museum

出　　处：《植物分类与资源学报》2014年第1期7-12,共6页Plant Diversity

摘　　要：运用分子系统发育分析的方法研究了江苏铁角蕨(Asplenium kiangsuense)的系统位置及其与庐山铁角蕨(A.gulingense)的关系,并探讨了该类群可能的多倍体起源方式。结果显示:江苏铁角蕨与庐山铁角蕨可能为同源四倍体,是组成倒挂铁角蕨复合体(A.normale complex)的成员之一;二者在形态特征与基因序列方面均表现一致,接受英文版中国植物志的处理,即把庐山铁角蕨处理为江苏铁角蕨的异名。Asplenium gulingense was reduced to a synonym of A. kiangsuense in the English version of Flora of China. However, the status of both entities has not been investigated rigorously. Phylogenetic analysis of plastid and nuclear sequence data and inference of ploidy level were used to investigate the relationships between these taxa and their putative polyploid origin. Both A. kiangsuense and A. gulingense were considered to be likely autotetraploid members of the A. normale complex and because of their morphological and phylogenetic similarities, we accept that A. gulingense should be treated as a synonym of A. kiangsuense in the English version of Flora of China.

关 键 词：江苏铁角蕨 庐山铁角蕨 核基因pgiC 叶绿体基因 系统位置 多倍体起源 

分 类 号：Q949.36[生物学—植物学]