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植物研究 ›› 2013, Vol. 33 ›› Issue (6): 644-652.doi: 10.7525/j.issn.1673-5102.2013.06.002

• 论文 • 上一篇    下一篇

国产赖草属3组植物叶表皮解剖特征及其系统关系

刘玉萍1,2;苏旭3,4;何懿涵1;王喆之1*   

  1. 1.药用资源与天然药物化学教育部重点实验室,西北濒危药材资源开发国家工程实验室,陕西师范大学生命科学学院,西安 710062;2.青海师范大学思想政治理论课教学科研部,西宁 810008;3.青海师范大学生命与地理科学学院,西宁 810008;4.青海大学青海省高原作物种质资源创新与利用国家重点实验室培育基地,西宁 810016
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2013-11-20 发布日期:2013-11-20
  • 通讯作者: 王喆之
  • 基金资助:
     

Biosystematic Relationships and Anatomical Characteristics of Leaf Epidermis of Three Sections’ Plants in Leymus(Poaceae) from China

LIU Yu-Ping;SU Xu;HE Yi-Han;WANG Zhe-Zhi*   

  1. 1.Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry,Ministry of Education,National Engineering Laboratory for Resource Developing of Endangered Chinese Crude Drugs in Northwest of China,College of Life Sciences,Shanxi Normal University,Xi’an 710062;2.Department of Ideological and Political Theory Teaching and Research,Qinghai Normal University,Xining 810008;3.College of Geography and Life Science,Qinghai Normal University,Xining 810008;4.State Key Laboratory Breeding BaseKey Laboratory of Qinghai Province for Plateau Crop Germplasm Innovation and Utilization,Qinghai University,Xining 810016
  • Received:1900-01-01 Revised:1900-01-01 Online:2013-11-20 Published:2013-11-20
  • Contact: WANG Zhe-Zhi
  • Supported by:
     

摘要: 采用徒手刮削法对国产赖草属中多穗组、少穗组和单穗组主要代表种的叶表皮微形态特征进行了观察。结果显示:(1)赖草属3组植物的叶表皮皆由长细胞、气孔器细胞、短细胞和刺毛组成,表现为典型的狐茅型;同时,3组植物在长细胞的长度与宽窄,气孔器的大小与分布及副卫细胞的形状,短细胞的丰缺与着生形式,刺毛的数量、体积与类型等性状上存在明显差异。(2)根据3组植物叶表皮性状的演化趋势,对各组的演化关系和系统位置分析表明,多穗组最原始,少穗组较进化,单穗组最高级;多穗组可能直接派生了较进化的少穗组,并在少穗组的基础上进而产生了最高级的单穗组。多穗组、少穗组和单穗组的这一系统关系与利用外部形态特征所获得的演化趋势基本一致。

关键词: 多穗组, 少穗组, 单穗组, 叶表皮, 系统关系

Abstract: The micro-morphological characteristics of leaf epidermises of the major species of sect. Racemosus, sect. Leymus and sect. Anisopyrum in Leymus from China were examined by manual scraping method. The result showed that: (1)The leaf epidermis consists of long cell, stomatal cell, short cell and prickle hair. It belongs to the typical festucoid type. Meanwhile, there are also obvious differences existing on the anatomical characteristics of leaf epidermises including length and width of long-cells, magnitude and distribution of stomatal apparatus, shape of subsidiary-cells, abundance and growing form of prickle-hairs, etc. (2)According to the evolutionary trends of leaf epidermal characteristics of three sections, their evolutionary positions and relationships were inferred. The results show that the sect. Racemosus is the most primitive one among three sections, the sect. Leymus is slightly more advanced than the former, and the sect. Anisopyrum is the most advanced of them. The sect. Racemosus might produce immediately the sect. Leymus, whereas the sect. Anisopyrum might derive immediately form the sect. Leymus. The biosystematic relationships of these three sections are corroborated by the evolutionary trend of external morphology.

Key words: sect.Racemosus, sect.Leymus, sect.Anisopyrum, leaf epidermis, biosystematic relationship

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