青藏高原不同海拔高度下全缘叶绿绒蒿叶表皮特征研究

采用胶带粘取叶表皮法，利用光学显微镜观测不同海拔高度下全缘叶绿绒蒿叶片的表皮毛、气孔及表皮细胞结构特征，探讨全缘叶绿绒蒿叶表皮特征与海拔高度的关系。结果表明，随着海拔高度增加，全缘叶绿绒蒿叶片上、下表皮毛密度、气孔密度和表皮细胞密度逐渐增加；气孔器及表皮细胞的长度、宽度和面积逐渐减小；表皮细胞的形态随着海拔升高由无规则形向多边形变化，垂周壁由波状向弓形或平直变化。全缘叶绿绒蒿叶表皮结构在不同海拔高度下表现出的差异，可能是植物长期在高原生态环境下的综合反应，以结构上的变化来适应对高海拔地区的环境特点，为进一步研究高海拔地区植物的适应性提供一定依据。

Characteristics of Leaf Epidermis of Meconopsis integrifolia under Different Altitudes in the Qinghai-Tibet Plateau

Characteristics of leaf epidermis of Meconopsis integrifolia were observed under optical microscope, including trichome, stomata and epidermis cell. The relationship between epidermis trichome, stomata, epidermis cell of leaf and altitude was discussed. The trichome density, stomata density and epidermis cell density of both upper and lower leaf epidermis increased gradually as the altitude increased. While the length, width and area of both stomata and epidermis cell decreased. Morphology of epidermis cell changed from irregular to polygonal. The shape of anticlinal wall altered from corrugated to arched or straight. These variation of characteristics probably be a general response of plants which living under plateau environment in a long-term, providing theoretical support for further study on alpine plant adaptation.