摘要
该研究通过光学显微镜(LM)和扫描电镜(SEM)观察了曲尾藓属(Dicranum Hedw.)10种植物的蒴齿和孢子的形态特征。结果表明:(1)曲尾藓属10种植物的孢蒴均为圆柱形。(2)孢子球形、近球形、椭圆形或三角状卵形,颜色为黄色、棕色或黄褐色;近极面向内凹,纹饰为疣状、颗粒状或芽孢状。(3)曲尾藓属10种植物的蒴齿多为披针形,但也有阔披针形,颜色为杏黄色、深红色、褐黄色或红褐色;纹饰为条状或疣状,具穿孔成网状结构,一些种无穿孔成平滑结构,表面具细疣。该研究结果为曲尾藓属属下类群划分提供了分类依据,并为苔藓植物系统分类、演化研究提供基础资料。
The morphological characteristics of peristome and spores of 10 species of Dicranum Hedw.were observed by light microscope(LM)and scanning electron microscope(SEM).The results show that:(1)the capsules of 10 species of Dicranum are cylindrical.(2)The spores are spherical,near spherical,orellipseor triangular ovate,they are yellow,brown,oryellowish brown;the faces near pole concave,the ornamentation is verrucous,granular,spore.(3)The peristome of 10 species of Dicranum mostly are lanceolate,some are broad lanceolate.These peristomes are apricot yellow,oxblood red,browinish yellow or reddish brownin color;the ornamentation is striate and verrucous,perforated into a net structure.Some species are smooth and lack of perforation,with verruca on the surface.The studies provide a basis for the taxonomic division of Dicranum and basic information for the taxonomic classification and evolution of bryophytes.
作者
古丽妮尕尔·穆太力普
袁祯燕
阿依努尔·阿不都热西提
买买提明·苏来曼
GULNIGAR Mutallip;YUAN Zhenyan;AYNUR Abudourexiti;MAMTIMIN Sulayman(College of Life Science and Technology, Xinjiang University, Urumqi 830046, China)
出处
《西北植物学报》
CAS
CSCD
北大核心
2020年第3期432-441,共10页
Acta Botanica Boreali-Occidentalia Sinica
基金
国家自然科学基金(31660052)
深圳市南亚热带植物多样性重点实验室开放课题(SLPD-2018-2)。
关键词
曲尾藓属
蒴齿
孢子
纹饰
Dicranum Hedw.
peristome
spore
ornamentation
