广西师范大学学报（自然科学版） ›› 2018, Vol. 36 ›› Issue (1): 142-148.doi: 10.16088/j.issn.1001-6600.2018.01.021

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瘤足蕨科植物叶表皮微形态及其系统学意义

赵航,王任翔*,刘灵   

  1. 广西师范大学生命科学学院，广西 桂林 541006
  • 收稿日期:2017-06-12 出版日期:2018-01-20 发布日期:2018-07-17
  • 通讯作者: 王任翔(1964—),男,湖南资兴人,广西师范大学教授,博士。E-mail:wrx05@126.com
  • 基金资助:
    国家自然科学基金 (31460049)

Systematic Significance of Leaf Morphology in Plagiogyriaceae

ZHAO Hang,WANG Renxiang*,LIU Ling   

  1. College of Life Sciences,Guangxi Normal University,Guilin Guangxi 541006,China
  • Received:2017-06-12 Online:2018-01-20 Published:2018-07-17

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摘要： 利用光学显微镜和扫描电子显微镜对瘤足蕨科Plagiogyriaceae 9种及其近缘类群桫椤科Cyatheaceae 4种、蚌壳蕨科Dicksoniaceae 1种共14种植物,即瘤足蕨Plagiogyria adnata、耳形瘤足蕨P. stenoptera、镰羽瘤足蕨P. falcata、峨嵋瘤足蕨P.assurgens、密羽瘤足蕨P. pycnophylla、粉背瘤足蕨P. glauca、华东瘤足蕨P. japonica、华中瘤足蕨P. euphlebia、日本瘤足蕨P.matsumureana、白桫椤Sphaeropteris brunoniana、桫椤Alsophila spinulosa、西亚黑桫椤Gymnosphaera khasyana、滇南黑桫椤G. austro-yunnanensis和金毛狗Cibotium barometz的叶表皮微形态进行观察比较。结果表明:14种植物的叶表皮细胞都为不规则型,垂周壁为深波状或波状;其中,在扫描电子显微镜下峨嵋瘤足蕨、粉背瘤足蕨、白桫椤和金毛狗的叶下表皮具有形态可见的蜡质晶体。它们的气孔器类型有7种,为极细胞型、腋下细胞型、不等细胞型、不规则四细胞型、不规则细胞型、横列型和围绕型。对瘤足蕨科植物的分类和系统位置进行了讨论,为其系统学研究提供叶表皮微形态的资料。

关键词: 瘤足蕨科, 桫椤科, 蚌壳蕨科, 气孔器类型, 近缘类群

Abstract: Leaf epidermises of 14 taxa,representing Plagiogyriaceae and its related taxa,were examined by light microscopy (LM) and scanning electron microscopy (SEM) to determine the systematically informative characters. The 14 taxa include 9 species of Plagiogyriaceae (Plagiogyria adnata,P.assurgens,P. euphlebia,P. falcata,P. glauca,P. japonica,P. matsumureana,P. pycnophylla and P. stenoptera),4 species of Cyatheaceae (Alsophila austro-yunnanensis, Gymnosphaera khasyana,G. spinulosa and Sphaeropteris brunoniana) and 1 Dicksoniaceae species of Cibotium barometz. The results show that the leaf epidermal cells are usually irregular in shape. The patterns of anticlinal walls sinuous and sinuate. There are wax granules on the epidermiese of Plagiogyria assurgens,P. glauca,Sphaeropteris brunoniana,and Cibotium barometz. The stomatal apparatuses were restricted in abaxial epidermises for all species,and could generally be assigned to polocytic,axillocytic,aisocytic,anomotetracytic,anomocytic,diacytic,and pericytic types. Based on the results of leaf micromorphology, the taxonomic and systematic positions of Plagiogyriaceae were discussed.

Key words: Plagiogyriaceae;Cyatheaceae;Dicksoniaceae;type of stomatal apparatuses, related taxa

中图分类号: 

  • Q949
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[1] 白诗敏,张见乐,王任翔. 华中瘤足蕨配子体发育的研究[J]. 广西师范大学学报（自然科学版）, 2017, 35(1): 98-103.
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