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毛竹秆茎由“竹皮”系统、基本系统和维管系统组成。“竹皮”系统包括表皮、皮下层及皮层,为体小壁厚、排列紧密的细胞。基本系统包括基本组织和髓环。髓环为秆茎的内壁,由数至十数层高度木质化的石细胞组成,排列整齐而紧密。髓环与“竹皮”系统形成秆茎的内外夹壁,把基本组织和维管系统紧夹其中。节间维管束都平行排列,但通过竹节时则有不同程度的弯曲、分叉或合并,引起竹节肿胀,分枝节尤为明显。有些维管束向内迂回盘绕,与基本组织交织形成节隔,有利于竹株的横向输导和机械支持。
Bamboo stems by the “bamboo skin” system, the basic system and vascular system. “Bamboo skin” system includes the epidermis, the subcutaneous layer and the cortex, the body is small wall thickness, closely arranged cells. The basic system includes the basic organization and the loop. The inner loop of the stem is a stalk stem which is composed of stone-lined cells with a height of several to ten, arranged neatly and tightly. The inner ring and the “bamboo skin” system form the inner and outer wall of the stalks, which clamps the basic tissue and the vascular system tightly. Internode vascular bundles are arranged in parallel, but through bamboo when there are varying degrees of bending, bifurcation or merge, causing bamboo swelling, especially the branch section. Some of the vascular bundles turn around serpentine inwardly, interweaving with the basic tissues to form a septum, which is conducive to the horizontal guidance and mechanical support of bamboo plants.