| 释义 |
形成层xíngchéngcéng植物体中的一种组织,细胞排列紧密,有不断分裂增殖的能力。形成层的细胞陆续分化而形成韧皮部和木质部,并使茎或根不断变粗。{cambium; layer of formative cells between the wood and bark in dicotyledonous plants. These cells cause the girth of the stem to increase by dividing and differentiating to form new phloem and xylem tissue, which will eventually become wood and bark.} |