方法：采用石蜡切片法对14份研究材料制作根的横切片，应用光学显微镜观察其显微结构。
Method: the cross sections of 14 materials were obtained by using paraffin sectioning and the optical microscope was used to characterize the structure.
对叶片横切切片观察发现角质层的堆积疏松，并且细胞壁厚度不规则。
Cross-sectioning reveals loose packing of the cuticle and irregular thickness of cell wall.
对叶片横切切片观察发现角质层的堆积疏松，并且细胞壁厚度不规则。
Cross-sectioning reveals loose packing of the cuticle and irregular thickness of cell wall.
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