喀什霸王叶片的形态解剖学研究

通过石蜡切片法和光学显微镜观察,研究喀什霸王（Sarcozygium kaschgaricum Boriss）叶片的解剖结构。结果表明：喀什霸王叶片有栅栏组织和海绵组织的分化,但栅栏组织分布于叶片的上下表皮内方,为等面叶。从叶片横切面上看,表皮由一层排列紧密的形状不规则的表皮细胞组成,细胞外壁角质层较厚,上表皮角质层较下表皮的厚,气孔类型为无规则型,仅分布在下表皮上,微下陷;叶肉组织发达,栅栏组织由1~2层圆柱形细胞组成,其外层细胞转化为异细胞,栅栏组织与海绵组织厚度之比约为1∶2,海绵组织位于叶片中央,细胞呈凌乱分布下表皮内具有1~2层由异细胞组成的下皮层;主脉发达。以上特征均反映出植物结构与环境的统一性。

Study on anatomical structure of leaf of Sarcozygium kaschgaricum

Through a wax-- slides and optical microscopy, studied the overlord of S. kaschgaricum Boriss leaf＇s dissection structure. The result show： S. kaschgaricum Boriss leaves have differentiation of the Palisade and there is spongy tissue, but the distribution of palisade tissue in the leaf epidermis of the upper and lower side. Cross section from the leaf surface, the epidermal cell wall thick cuticle, the cuticle on epidermal thickness than the lower epidermis, stomatal type is non--rule--based, only on the distribution of the next skin, micro--subsidence; mesophyll organization developed palisade tissue by 1 -2 layers of cylindrical cells, the outer layer of cells into different cells, palisade tissue and spongy tissue thickness ratio of about 1：2, spongy tissue located in the central of leaves, the distribution of cells under the epidermis messy with 1 ~ 2 layers by the composed of different cells under the cortex; The main vein is flourishing. The above characteristic reflects the unity of a plant structure and environment.