| 摘要: |
| 为获取其孢子萌发类型与该属植物系统发育、生态选择以及生殖策略选择的相关性,该研究通过室内人工培养的方式,在微米量级下观察并描述了碎米藓属(Fabronia)碎米藓(F. pusilla)和东亚碎米藓(F. matsumurae)两种藓类植物孢子萌发、原丝体发育和配子体发生的过程。结果表明:(1)两种藓类植物孢子均为壁外萌发,均产生由1～15个半圆球形细胞组成的绿丝体(chloronema)短枝;(2)碎米藓在绿丝体顶端分化产生轴丝体细胞,东亚碎米藓未分化产生轴丝体(caulonema);(3)两种藓类植物配子体原始细胞均在绿丝体上分化产生。参照Nishida对藓类植物孢子萌发型划分标准,分析并确定了碎米藓属两种藓类植物孢子萌发型均为蓑藓型(Maromitrium-type),为碎米藓属的系统分类提供了发育学证据。 |
| 关键词: 碎米藓, 东亚碎米藓, 孢子萌发, 原丝体发育, 配子体发生, 孢子萌发型 |
| DOI：10.11931/guihaia.gxzw202005022 |
| 分类号:Q949.35 |
| 文章编号:1000-3142(2021)01-0085-07 |
| Fund project:河北省社会科学基金(HB19SH012); 河北省自然科学基金(D2019106006,C2019205175); 衡水学院高层次人才科研启动基金(2018GC36)[Supported by Social Science Foundation of Hebei Province(HB19SH012); Natural Science Foundation of Hebei Province(D2019106006,C2019205175); Research Start-up Fund for High-Level Talents of Hengshui University(2018GC36)]。 |
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| Characteristics of spore germination and protonema development of two species in Fabronia Raddi |
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HUANG Shiliang1, CAO Zhen2, ZHANG Hao1, NIU Yulu3, WANG Zhenjie2, ZHAO Jiancheng4
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1. Hebei Women's Vocational College, Shijiazhuang 050091, China;2. Hebei College of Industry and Technology, Shijiazhuang 050091, China;3. College of Life Sciences, Hengshui University, Hengshui 053000, Hebei, China;4. College of Life
Sciences, Hebei Normal University, Shijiazhuang 050024, China
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| Abstract: |
| The spore germination and protonema development of two Fabronia moss species, F. pusilla and F. matsumurae, were observed and described at the micron level by means of indoor artificial cultivation in order to obtain the correlation between spore germination type and phylogeny, ecological selection and reproductive strategy selection of this genus. The results were as follows:(1)The spores of both species germinated outside the wall and produced chloronema twigs that composed of 1-15 semicircular cells;(2)Caulonema cells of F. pusilla were differentiated and formed from the top of chloronema whereas caulonema cells were undifferentiated in F. matsumurae;(3)Gametophyte initial cells of both species were differentiated and formed from chloronema. On the basis of previous studies, in this experiment, referring to Nishida's classification standard for moss spore germination, spore germination of the two Fabronia Raddi moss species were analyzed and determined to be of Maromitrium-type, providing developmental evidence for the systematic classification of this genus. |
| Key words: Fabronia pusilla, Fabronia matsumurae, spore germination, protonema development, gametophyte development, sporeling-type |
