4种桫椤初生叶的形态发育及其系统学意义  

Morphological Development of Juvenile Sporophyte Fronds of Four Species in Cyatheaceae and Their Systematic Significance

作　　者：檀龙颜[1] 郭立波[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》2009年第5期957-960,共4页Acta Botanica Boreali-Occidentalia Sinica

基　　金：黑龙江省普通高等学校青年学术骨干支持计划项目(1152G015)

摘　　要：用腐叶土培养海南白桫椤(Sphaeropteris hainanensis)、阴生桫椤(Alsophila latebrosa)、刺桫椤(A.spinu-losa)和滇南桫椤(A.austroyunnanensis)的孢子,获得有性生殖苗.观察并比较了幼孢子体最初4枚叶片形态发生的详细过程,据此讨论了其种属划分的合理性及相关的系统学意义.The spores of Sphaeropteris hainanensis , Alsophila latebrosa , A. spinulosa and A. austroyunnanensis were cultivated with leaf mould substrate,and the juvenile sporophytes were got. Detailed formation process of the initial four fronds of the juvenile sporophytes were observed and compared morphologically. The rationality of taxonomy between species and genus is discussed hereby,as well as its systematic significance.

关 键 词：海南白桫椤 阴生桫椤 刺桫椤 滇南桫椤 幼叶 系统学意义 

分 类 号：Q949.36[生物学—植物学]