摘要
凤尾蕨属(Pteris L.)隶属于凤尾蕨科(Pteridaceae)。由于自然杂交和多倍化的频繁发生,凤尾蕨属拥有多个复合群,属内种间界限模糊,部分类群孢子体形态极为相似。该属的分类学研究主要经历了经典分类学、微观形态学、细胞学、分子系统学4个阶段。由于叶脉联结的不稳定性,经典分类学阶段主要以叶脉联结的情况作为该属等级划分的首要依据;微观形态学阶段发现,孢子表面纹饰有助于揭示该属的种间关系,而气孔器类型则是该属区分于其他属的有效依据;细胞学阶段揭示,该属主要的生殖方式为有性生殖和无融合生殖,而且该属存在多个复合群;分子系统学阶段进一步揭示该属具有复杂的种间关系,目前正逐步对该属复合群展开研究,主要集中在条纹凤尾蕨复合群(P.cadieri complex)和傅氏凤尾蕨复合群(P.fauriei complex)上,其研究范围尚有待扩大。理清复合群的起源问题和成员间的关系不仅有助于解决该属的分类学问题,还有助于推动该属物种起源与分化规律的研究。
Due to hybridization and polyploidation,a number of complexes occur in Pteris（Pteridaceae） and some speceis in Pteris are highly similar in morphology.The history of taxonomy in Pteris can be divided into four parts：classical taxonomy,micromorphology,cytology and molecular systematics.In classical taxonomy,it was controversial that anastomosing veins should be the primary basis for classification of Pteris because veins were not always anastomosing in some Pteris species.In micromorphology,ornamentation of spores was found valuable to clarify genetic relationships in Pteris,and stomatal types were useful to distinguish Pteris from other genera.In cytology,sexual reproduction and apomixes were found to be the main reproduction styles in Pteris,and quite a few complexes were also found.Studies in molecular systematics helped a lot to clarify complicate relationships in some Pteris complexes,such as P.cadieri complex and P.fauriei complex.More complexes in Pteris need to be studied,which should focus on the origins of complexes and the genetic relationships of members in complexes.The study of complexes could improve the study on the origin and evolution of species in Pteris and clear up some taxonomic confusion in Pteris.
作者
杨东梅
王佳玫
王小娇
王发国
YANG Dongmei;WANG Jiamei;WANG Xiaojiao;WANG Faguo(College of Horticulture, Institute of Tropical Agriculture and Fores町, Hainan University, Haikou 570228, China;Guangdong Key Laborato巧.f Applied Botany, South China Botanical G缸den, Chinese Academy of Sciences , Guangzhou 510650 , China)
出处
《热带生物学报》
2018年第1期123-128,共6页
Journal of Tropical Biology
基金
国家自然科学基金项目(31360042)
