干旱区研究

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2016 , Vol. 33 >Issue 5: 1081 - 1087

DOI: https://doi.org/10.13866/j.azr.2016.05.23

植物生理

乌鲁木齐河源区10种真藓属植物茎的解剖学分析

  • 艾菲热·阿布都艾尼 ,
  • 王虹
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  • 新疆大学生命科学与技术学院,新疆 乌鲁木齐 830046
艾菲热·阿布都艾尼(1994-),女,本科生,主要从事生物学研究. E-mail: 315407474@qq.com

收稿日期: 2016-03-25

  修回日期: 2016-04-25

  网络出版日期: 2016-09-28

基金资助

国家自然基金项目(41461010,41571049); 新疆大学大学生创新训练计划项目(XJU-SRT-15051)资助

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Anatomic Features of the Stems of 10 Species in Bryum from the Headwaters of the Urumqi River

  • Aifeire Abuduaini ,
  • WANG Hong
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  • College of Life Science and Technology,Xinjiang University,Urumqi 830046,Xinjiang,China

Received date: 2016-03-25

  Revised date: 2016-04-25

  Online published: 2016-09-28

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摘要

利用石蜡切片和电镜扫描技术,对乌鲁木齐河源区10种真藓属植物茎的结构做比较解剖学研究。结果表明:该属植物茎分为表皮、皮部、中轴3部分,表皮细胞小,细胞壁强烈加厚;皮部细胞壁由外向内逐渐变薄,细胞整齐或镶嵌排列;中轴所占面积较小,细胞壁角隅加厚。茎细胞壁上分布有不规则的小孔,相邻细胞的细胞壁厚,表面角质层纹饰多为鳞片状或颗粒状,这些可能是植物在长期恶劣环境下的生存策略,揭示了真藓属植物茎具有较强耐寒、耐旱结构的典型特征,虽然它们在外形和亲缘关系上均很接近,但每个种又各具不同的形态特征,为该属植物鉴定提供了分类学依据。

关键词： 真藓属; 植物茎; 解剖学; 扫描电镜; 乌鲁木齐河

本文引用格式

艾菲热·阿布都艾尼 , 王虹 . 乌鲁木齐河源区10种真藓属植物茎的解剖学分析[J]. 干旱区研究, 2016 , 33(5) : 1081 -1087 . DOI: 10.13866/j.azr.2016.05.23

Abstract

Comparative anatomy of the stems of 10 species in Bryum from the headwaters of the Urumqi River was researched using the paraffin sections and scanning electron microscopy (SEM).The results showed that the stems of 10 species in Bryum were constituted of three parts,i.e.the epidermal,cortex and central axis.Epidermal cells were small,and the cell wall thickened strongly.Cortex cells arranged neatly or in a mosaic way,and the cell wall thinned gradually from outside to inside.Axis cells occupied small area,and the corner of cell wall thickened.Pores were distributed irregularly on the cell wall of stem,and the adjacent cell walls were thick with flaky or granular cuticle ornamentation on their surface.These characters would be the survival strategy of plants in severe environment for a long time,and they revealed that the stem of Bryum was characterized by the strong cold-resisting and drought-enduring capabilities.These species are quite similar in morphology,but each species has different anatomical structure,which can provide a taxonomical basis for species identification.

Key words： Bryum; plant stem; anatomy; SEM; Urumqi River

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