| 摘要: |
| 为更好地分类和鉴定两面针原变种、毛两面针变种以及原变种的3个类型,对两面针2个变种及原变种3个类型的小叶形态特征进行了观察,并利用扫描电镜和解剖镜对叶片表皮和叶脉进行了显微观察和微形态研究。结果显示:两面针原变种各类型和毛两面针的植物形态主要区别在叶片质地和被毛情况,叶片质地在类型内较为稳定,是首要分类性状。毛两面针的叶表面特征与原变种区别明显,类型三有别于前两种类型。叶脉特征中毛两面针和类型一也与类型二和三有所不同。叶表面和叶脉的微形态均具有较好的分类意义和鉴别意义,支持《中国植物志》关于两面针2个变种以及3个类型的划分。 |
| 关键词: 两面针 小叶形态 叶表皮 叶脉 |
| DOI： |
| 分类号:Q949 |
| 基金项目: |
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| culture of Lilium Asiatic Hybrids |
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YU Li-Ying, TAN Xiao-Ming, ZHOU Ya-Qin
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Guangxi Botanical Garden of Medicinal Plants, Nanning 530023,China
Guangxi Botanical Garden of Medicinal Plants, Nanning 530023,China
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| Abstract: |
| In this paper,in order to better identify of the two variaties and three types of Z.nitidum,the variation of leaflet morphological characters of them was analyzed,the micro-morphology of the leaflet epidermis and nerve was observed by SEM and AM. The results was showed that the leaflet characters of each variaty and type were mainly on leaf texture and pubescence on the surface of plant. The leaflet texture is the first taxonomic character because of its stabilization among the type. There is obvious distinguish between original variety and Z.nitidum var.tomentosum,and between Type III and other two types on the surface characters of leaflet. There are some special characters of leaflet nerve for type I and Z.nitidum var.tomentosum which were different from others. As a result,micro-morpology of the surface and nerve of the leaflet of Z.nitidum is significant for classification and identification. Based on above studies,it's confirmed that it has great significance for the division of two varieties and 3 types in Z.nitidum recorded in the book named Flora of China. |
| Key words: Zanthoxylum nitidum leaflet character leaf epidermis nerve |
