| 摘要: |
| 利用光学显微镜对广西产9种铁角蕨属(Asplenium L.)植物的叶表皮微形态进行观察比较。结果表明:9种铁角蕨属植物的叶表皮细胞多为不规则型,垂周壁为浅波状、波状或深波状;叶上下表皮均无毛,气孔器全部分布在下表面;它们的气孔器类型有7种,为极细胞型、腋下细胞型、聚腋下细胞型、不等细胞型、无规则四细胞型、不定细胞型和横列型。铁角蕨属植物不同种间叶表皮微形态特征表现出一定差异,对种的划分有一定的分类鉴定意义。 |
| 关键词: 铁角蕨属 叶表皮 微形态 分类鉴定 |
| DOI： |
| 投稿时间：2009-08-03修订日期：2009-09-14 |
| 基金项目:广西教育厅基金项目(200707MS113)资助。 |
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| Leaf Micromorphology of 9 Species of Asplenium L.in Guangxi and Its Taxonomic Significance |
|
DENG Xi-chao1, WANG Ren-xiang2
|
| (1.Departerment of Chemistry and Life Science, Hechi University, Yizhou, Guangxi, 546300, China;2.College of Life Science, Guangxi Normal University, Guilin, Guangxi, 541004, China) |
| Abstract: |
| The leaf micromorphology of 9 species of Asplenium L., distributed in Guangxi of China was observed and compared under light microscope (LM).The results were as the following:The form of epidermal cells of the Asplenium L.was usually irregular, with repand, sinuous or sinuate anticlinal walls.Upper and lower epidermises were hairless.The stomatal apparatus were existed on the abaxial epidermis in all species.Seven types of stomatal apparatus arrangements were found in these species, such as polocytic-, axillocytic-, coaxillocytic-, aisocytic-, anomotetracytic-, anomocytic-and diacytic-type.Furthermore, there were two or more arrangements existed in one species.The differences in the leaf micromorphology of these species threw lights on the systematics of Asplenium L. |
| Key words: Asplenium L.leaf epidermis micromorphology classification and identification |
