论文部分内容阅读
比较东北地区10种蒲公英(Taeaxacum.)叶片解剖结构,并确定其分类学意义,以期为蒲公英属分类鉴定研究提供理论依据。采用石蜡切片法对东北地区10种蒲公英叶片进行比较解剖学研究,并利用SPSS 12.0.1数据处理系统进行T值测验分析。试验表明:1蒲公英属叶片解剖结构存在很大差异,主要在海绵组织厚度,叶肉厚度、栅栏组织厚度及表皮毛有无这4个性状,可作为其种间区分的主要因子;共同点为气孔分布类型为Allium型,细胞形状为长方形和不规则近圆形;垂周壁式样一致为平直,弧形。2测定数量性状的T值检测和聚类分析结果与《中国植物志》分类结果一致。试验首次对10种蒲公英叶片解剖学进行研究报道,并确定蒲公英叶片解剖学特征的可作为蒲公英属植物分类的辅助依据,结果表明:卷苞蒲公英(Taraxacum urbanum)属于丹东蒲公英(Taraxacum antungense);戟片蒲公英(Taraxacum asiaticum)属于亚洲蒲公英(Taraxacum asiaticum);蒙古蒲公英(Taraxacum mongolicum)、台湾蒲公英(Taraxacum formosanum)和辽东蒲公英(Taraxacum liaotungense)建议归并为蒲公英(Taraxacum monguolicum),为蒲公英属植物分类研究奠定叶片解剖学基础。
The anatomical structure of 10 species of dandelion in the northeast of China were compared and their taxonomic significance was determined in order to provide a theoretical basis for the classification and identification of the genus Dandelion. Paraffin sections were used to study the comparative anatomy of ten species of dandelion leaves in northeastern China. T-tests were performed using SPSS 12.0.1 data processing system. The results showed that: (1) The anatomical structure of the leaves of Dandelion is very different, mainly in the four traits of sponge tissue thickness, mesophyll thickness, palisade tissue thickness and epidermis hairiness, which can be used as the main factor of their interspecies differentiation; Allium type distribution type, cell shape is rectangular and irregular near-circular; vertical wall pattern consistent flat, curved. The results of T-value detection and cluster analysis of quantitative traits were consistent with the classification of “Flora of China”. The results showed that Taraxacum urbanum belongs to Taraxacum antungense and Haliotis discus hannai was the most suitable species for Taraxacum antungense. Taraxacum asiaticum belongs to the genus Taraxacum asiaticum; Taraxacum mongolicum, Taraxacum formosanum and Taraxacum liaotungense are suggested as Taraxacum monguolicum, Leaf anatomy.