Comparing their root anatomic structure with paraffin slice, the evidence difference existed in the parts of epidermis, but no difference in the cortex and stele.

• 石蜡切片观察，结瘤豆科植物和非结瘤豆科植物在根的表皮部分存在着明显差异，而在皮层和中柱部分差异不明显。