平周分裂

但中柱鞘细胞在形成木栓形成层前，先进行平周分裂，形成了由多层细胞组成的中柱鞘细胞环。

However , before forming the cork cambium , pericyclic cells produced many layers pericyclic parenchyma cells by periclinal division .

孢原细胞进行平周分裂形成一个周缘细胞和一个造孢细胞。

The archesporium is divided into a parietal cell and a sporogenous cell , by the periclinal division .

孢原细胞平周分裂形成一个周缘细胞和一个造孢细胞，造孢细胞直接发育成大孢子母细胞，四分体大孢子呈线形排列，它们均可成为功能大孢子；

The sporogenous cell functioned directly as megaspore mother cell . The tetrad of megaspores was linear in arrangement , and every megaspore might be functional .

非腺毛由非腺毛原始细胞经二次或多次平周分裂和不均等分裂，再发育成数个至二十多个子细胞。

Non-glandular hairs are created from initial cells through second or more periclinal divisions and unequal divisions , then developed into several to about twenty sister cells .

即通过表皮层和第二层细胞的平周分裂而起源，小穗原基是通过第三层细胞的平周分裂发生，因而它们的起源方式相似于腋芽。

Spikelet primordia are initiated in periclinal divisions of the third-layer cells , therefore the origin mode of the spikelet primordia is comparable with that of axillary buds .

腺毛发育由原表皮细胞经两次平周分裂形成，由于柄细胞和头部细胞所处的分化状态不同而发育成两类腺毛。

The glandular hairs are formed by second successive periclinal divisions of the initial cell , and because of the different meristematic state of the stalk cells and apical cells , they developed into two types , capitate and peltate .

胚乳细胞的初始平周壁来自于胚乳细胞平周分裂形成的细胞板。

The first periclinal wall of endosperm cell arises from cell plate which is the result of normal cytokinesis .