凤尾蕨属配子体若干系统学特征新考  

New Researches of Some Phylogenetic Botany Characteristics on Gametophyte in Pteris L.

作　　者：程薪宇[1] 刘保东[1] 

机构地区：[1]哈尔滨师范大学生命科学与技术学院,哈尔滨150025

出　　处：《西北植物学报》2010年第12期2427-2432,共6页Acta Botanica Boreali-Occidentalia Sinica

基　　金：国家863项目(2007AA091705)

摘　　要：通过对凤尾蕨属(Pteris L.)8种,即半边旗(P.semipinnata L.)、傅氏凤尾蕨(P.faurieiHieron.)、阔叶凤尾蕨(P.esquirolii Christ)、三叉凤尾蕨(P.tripartita Sw.)、蜈蚣草(P.vittata L.)、溪边凤尾蕨(P.excelsa Gaud.)、有刺凤尾蕨(P.setuloso-costulata Hayata)、西南凤尾蕨(P.wallichiana Agardh)孢子的人工培养,观察并总结了该属配子体发育各阶段形态特征,并与以往的观察结果进行比较。最终选取孢子萌发型与配子体发育类型等稳定特征作为判断依据,讨论该属与书带蕨科(Vittariaceae)、中国蕨科(Sinopteridaceae)、铁线蕨科(Adiantaceae)等科的亲缘关系。研究认为蕨类配子体生长点上方边缘细胞分布情况多变,不是稳定的系统学特征。而配子体特定部位边缘细胞的外侧壁形态则具有较高的系统学参考价值。Based on the artifical culture of spores of 8 species in Pteris L.,such as P.semipinnata L.,P.fauriei Hieron.,P.esquirolii Christ,P.tripartita Sw.,P.vittata L.,P.excelsa Gaud.,P.setuloso-costulata Hayata,P.wallichiana Agardh,the morphological characteristics of gametophytes development have been observed and summarized in the experiment and compared with some other former researches.Some stable characteristics such as spore germination types and gametophyte development types have been chosen as basis of judgment of the relationship between Pteris L.and Vittariaceae,Sinopteridaceae,Adiantaceae.The research indicates that the distribution of the marginal cells above apical point is not a stable systematic characteristic because it is variable.By contrast,the shape of lateral wall of marginal cells on special position of gametophyte has high value in systematic researches.

关 键 词：凤尾蕨属 配子体 植物系统学 

分 类 号：Q944.58[生物学—植物学]