中层区是由增殖能力旺盛的分生组织细胞所构成；
The middle region was composed of meristematic tissue whose cells had high proliferative activity (Plate Ib).
本文对蚕豆根端分生组织细胞核中类胀泡结构的超微结构变化和细胞化学特点进行了研究。
Studies were carried out on the ultrastructural and cytochemical features of the puff-like structure (PLS) of Vicia faba.
根的生长主要取决于根尖区的细胞分裂和伸长，而调控根尖分生组织细胞分裂的成分很大程度上是未知的。
Root growth is mainly determined by cell division and subsequent elongation in the root apical area. Components regulating cell division in root meristematic cells are largely unknown.
次生加厚分生组织起源于正常的散生维管束中柱外侧的薄壁组织细胞。
The secondary thickening meristem originated from the parenchyma cells, which were located the outside of the atactostele.
次生加厚分生组织起源于正常的散生维管束中柱外侧的薄壁组织细胞。
The secondary thickening meristem originated from the parenchyma cells, which were located the outside of the atactostele.
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