竹材节间和节部的构造特征竹材节间细胞都是严格的轴向排列，没有木材中的横向射线细胞。

Structural properties of internodes and node of bamboo All cells in internodes are strictly aligned in longitudinal direction, the transverse ray cells don t exist.

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甘蔗节上的细胞ATP酶的活性比节间的高，这与甘蔗茎的增粗有密切的关系。

The ATPase activity on the cell membrane, vacuole membrane, plasmadesmus and intercellular space is higher than those on the sugarcane nodes.

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节与节间由过渡区细胞分化产生。

Node and internode are initiated from transition zone.

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