八种青藓科植物蒴齿及孢子的超微形态研究

何红燕<sup>1; 3</sup>; 熊源新<sup>1*</sup>; 石 磊<sup>2</sup>; 贾 鹏<sup>2</sup>

引用本文:	何红燕, 熊源新, 石磊, 贾鹏.八种青藓科植物蒴齿及孢子的超微形态研究[J].广西植物,2011,(2):188-193.[点击复制]
	HE Hong-Yan, XIONG Yuan-Xin, SHI Lei, JIA Peng.Morphological studies on the spores and peristomal teeth of eight moss species in Brachytheciaceae[J].Guihaia,2011,(2):188-193.[点击复制]

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八种青藓科植物蒴齿及孢子的超微形态研究
何红燕^1,3, 熊源新^1*, 石磊², 贾鹏²
1.山西省襄垣一中, 山西长治 046000;2.贵州大学林学院, 贵阳 550025;3.贵州大学生命科学学院, 贵阳 550025

摘要:

利用扫描电镜观察了八种青藓科植物孢子及蒴齿的形态,青藓科植物的孢子纹饰多以芽孢状和瘤状突起为主,孢子的大小、外壁纹饰的差异显示了不同种之间的遗传分化及系统演化。青藓属外齿层腹面中部分为四种类型:光滑无疣、颗粒状疣、短刺状小疣、棒状和芽孢状疣,外齿层中上部的特征属与属之间存在差异,该研究可为分类鉴定提供一定的依据。

关键词: 藓类孢子蒴齿纹饰演化关系

DOI：10.3969/j.issn.1000-3142.2011.03.010

分类号:Q949.35

基金项目:

Morphological studies on the spores and peristomal teeth of eight moss species in Brachytheciaceae

HE Hong-Yan^1,3, XIONG Yuan-Xin^1*, SHI Lei², JIA Peng²

1.No.1 Middle School of Xiangyuan, Changzhi 046000, China;2.Institute of Forestry,Guizhou University, Guiyang 550025, China;3.College of Life Sciences, Guizhou University, Guiyang 550025, China

Abstract:

Spores and peristomal teeth morphology of eight species in the moss family Brachytheciaceae was observed by scanning electron microscope(SEM). The surface ornamentations were spore and tuberculat mainly. It showed heredity differentiation and evolution relationship among the different species from spores size and exine ornamentation. The ventral central of exostomes in Brachythecium can be divided into four types: smooth; irregularly tuberculate; short puncture; tuberculate and spore. Differentiation existed among the different genera in the middle and upper of exostome,which provided some basis for taxonomic identification.

Key words: spores of mosses peristomal teeth Ormentation evolution relationship