摘要
藓纲包括 3个亚纲 (Brotherus ,192 4～ 192 5) ,泥炭藓亚纲、黑藓亚纲 ,真藓亚纲 ,全世界约 10 0个科 ,近 80 0属 ,约 150 0 0种。藓类的传孢类型和藓类植物系统演化有密切关系。我们认为传孢不同类型 ,直接反映了他们的演化程度。我们根据藓类孢子体的分化、蒴齿分化与其机能 ,分为 5种传孢类型。即腐媒传孢型 ,风媒传孢型 ,汽 -风媒传孢型 ,水媒传孢型 ,和虫媒传孢型等 5种。根据它们的演化程度比较 ,我们提出了一个以科为单位的演化系统表。
Musci include three Subclasses(Brotherus,1924～1925):Sphagnidae, Andreaeidae and Bryidae, which are composed of about 100 families and 800 genera in the world. Our researches indicated that the types of spore dispersal has an important significance in the evolution of mosses. Based on the studies of sporophyte, peristome teeth and the individual development of mosses, 5 types of spore dispersal can be inducted, that is decay dispersal, wind dispersal, vapour-wind dispersal, water dispersal and insect dispersal. Furthermore, the relationship between the spore dispersal and evolution is discussed in detail. A newly evolution system of families of mosses is presented.
出处
《云南植物研究》
CSCD
2000年第3期268-276,共9页
Acta Botanica Yunnanica
基金
中国科学院资源与环境重点研究项目
关键词
藓纲
传孢类型
演化系统
Mosses
Spore dispersal
Evolution system
