蚕用桑不同品种叶表皮形态和结构的比较研究Ⅰ

Study on the epidermal shape and the structure in the leaves of eleven mulberry varieties(1)

运用光学显微镜和扫描电镜对11种蚕用桑品种的叶表皮形态和结构进行观察研究。结果表明,品种间在表皮、叶肉和叶脉上的构造基本相似;主要差别在于气孔密度、上表皮细胞中的钟乳体细胞数目及叶肉中晶体的分布。基于表皮形态学特征的数量分析,结果表明,11个品种可分为6大类,这与传统分类结果基本一致。

This article used the optical microscopy and scanning electronic to observe the epidermal shape and the structure in leaves of the eleven mulberry cultivarieties. The result states that the structure of them is nearly the same in the epidermis,mesophyll and the vein. The main differences are the distribution of the stom- atal density and the cystolith cells in the upper epidermis and the distribution of the crystals in the mesophyll. Based on the quantity analysis of the epidermal morphology,the result makes it clear that the eleven cultivarieties of the Morus alba L. can be divided into six varieties. It is almost the same to the result by traditional method. This result can not only provide some evidences to the classification of the white mulberries but have a certain value to its living identity in mulberry leaves and the selection to mulberry cultivarieties with high quality.