观察了云南省 8种甘蔗属及近缘属植物叶片下表皮的解剖结构 ,结果表明 ,肋区中刺细胞的有无、行数及形状 ,硅细胞及栓细胞的排列方式 ,表皮上附属物的类型 ,气孔的行数及副卫细胞的形状等在不同种之间是不同的 ,这些解剖特征可作为外部器官形态分类的补充 ,也可为甘蔗杂交育种提供解剖学依据 The anatomical structures of the lower epidermis of eight species of Sugarcane and its relatives in Yunnan Province were observed. The results showed that there were no differences in the number of rows, the number of rows and the shape of the streak cells, the arrangement of silicon cells and plug cells, The types of stomata, the number of stomata and the shape of accessory cells are different among different species. These anatomical features can supplement the morphological classification of external organs and provide anatomical basis for cross breeding of sugarcane