傅氏凤尾蕨复合群孢子形态的扫描电镜观察  

Morphological Observation of the Spores from Pteris fauriei Complex by SEM

作　　者：王佳玫[1] 杨东梅[1,2] 王爱华[3] 吴友根[1,2] 王发国[3] WANG Jiamei YANG Dongmei WANG Aihua WU Yougen WANG Faguo(College of Horticulture and Landscape Architecture, ltainan University, Haikou, Hainan 570228 Ministry of Education Key Laboratory of Protection, Development and Utilization of Tropical Crop Germplasm Resources, Hainan University,, Haikou, Hainan 570228 Key Laboratory for Conservation and Sustainable Utilization of Plant Resources, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China)

机构地区：[1]海南大学园艺园林学院,海口570228 [2]海南大学热带作物种质资源保护与开发利用教育部重点实验室,海口570228 [3]中国科学院华南植物园/中国科学院植物资源保护与可持续利用重点实验室,广州510650

出　　处：《热带生物学报》2016年第3期387-394,共8页Journal of Tropical Biology

基　　金：国家自然科学基金(31360042);海南大学青年基金项目(qnjj1215);海南大学植物学国家重点学科项目(071001)

摘　　要：傅氏凤尾蕨复合群(Pteris fauriei complex)包括傅氏凤尾蕨Pteris fauriei、百越凤尾蕨P.fauriei var.chinensis、线裂凤尾蕨P.angustipinnula、硕大凤尾蕨P.majestica、隆林凤尾蕨P.splendida等,此复合群种间界限模糊,难以准确分类,为此笔者利用扫描电镜对此复合群植物的孢子形态进行观察,为理清成员间的亲缘关系提供佐证。观察发现,脊类纹饰是此复合群孢子的重要特征,根据脊类纹饰的有无和分布情况,该复合群可划分为4个类群。此外,孢子形态可作为此凤尾蕨复合群区分种的特征,但傅氏凤尾蕨和百越凤尾蕨的孢子形态较相近,难以区别。本研究还首次发现隆林凤尾蕨具有"连体孢子"。Pteris fauriei complex includes Pteris fauriei,P. fauriei var. chinensis,P. angustipinnula,P. majestica,P. splendida and so on. The taxonomic cluster of the complex is easily confused due to the morphological similarity of the members of the complex. Morphological observation of the spores of five members in this complex was performed by a scanning electron microscope（ SEM）,which could help to clarify their genetic relationship. It was found that the lophate-like ornamentation is an important feature,The complex could be divided into four groups based on the presence and distribution of the lophate ornamentation. And the spore morphology is species-specific in the complex,except in that P. fauriei and P. fauriei var. chinensis shared similar spore morphology and are hard to distinguish from each other. In addition,the ＂conjoined spores＂phenomenon was first found in P. splendida.

关 键 词：傅氏凤尾蕨复合群 孢子形态 亲缘关系 

分 类 号：Q247[生物学—细胞生物学]