形成层细胞阶段和伸展生长阶段，POD主要分布在径壁上，尤其是细胞壁角隅处和初生纹孔场附近的细胞壁。
POD was mainly distributed in the radial walls of the cambial cells and expanding xylem cell, especially at the corner of cell wall and cell wall close to the primary pit field.
木材（次生木质部）是树木形成层细胞分化的产物，形成层的活动方式不仅影响木材的产量，而且影响木材的结构和性质。
Wood is the product of cambial activity in trees, and the seasonal activity style of cambium directly influences wood biomass production, structures and properties.
原形成层（原形成层束）：形成维管组织的一层细胞。
Procambium (procambium strand) The layer of cells that gives rise to the vascular tissue.
初生木质部与初生韧皮部之间可见到2—3层排列规则或不规则的薄壁组织细胞，但是没有维管形成层的发生。
Between primary xylem and primary phloem there are 2-3 layers of parenchymatous cells, regularly or irregularly arranged, but no cambial zone can be recognized.
生长龄不同，额外形成层、栓内层的宽度和细胞大小不同。
Roots are different in the width of supernumerary cambium and phelloderm and the cell.
分别以胡萝卜子叶、下胚轴和直根形成层为外植体诱导出愈伤组织，并建立细胞悬浮系。
Calli were induced from cotyledons, hypocotyls, and taproot cambium of Daucus carrot. and cell suspension lines were established.
地下茎加粗过程中形成三生结构，其异常结构是由于次生韧皮部外侧发生的额外形成层所致，其起源于薄壁细胞；
The growth of hypogeal stem contain tri-growth, and the anomalous secondary growth is the result of supernumerary cambium that derived from the outmost elements of secondary phloem.
其衍生细胞分化为原表皮、基本分生组织和原形成层。
The differentiation of the cells derived from the primordial meristem formed protoderm, ground meristem and procambium strand.
周皮发生较迟，其木栓形成层由紧靠内皮层的皮层细胞产生。
The formation of periderm is relatively late and cork cambium is come from the cortex cells which arenear endodermis.
原形成层和基本分生组织的细胞比原表皮层细胞更加液泡化。
Cells of the procambium and ground meristem are more vacuolated than those of the protoderm.
在细胞表面标志上，年轻与成年兔形成层及软骨组织表现较多具软骨分化潜力之细胞标志。
For the mesenchymal stem cell marker profiles, cambium layer and cartilage layer all expressed higher chondroprogenitor related marker profiles.
吸器中管胞和筛管都是从吸器中央具有原形成层特性的细胞分化的，管胞的分化先于筛管，或同时进行。
The tracheid and sieve tube elements are all differentiated from the procambia in the center of the haustoria, and the former occurs prior to the latter.
维管形成层属于侧生分生组织，包括能够产生次生木质部与次生韧皮部的纺锤状形成层原始细胞和产生髓射线的射线原始细胞。
It is a lateral meristem and contains fusiform initials giving rise to secondary xylem and phloem and ray initials giving rise to medullary rays. See also secondary growth.
次生结构发生于根毛区，维管形成层由初生木质部和初生韧皮部之间的薄壁细胞转化形成；
Secondary structure occurs in the root hair zone, and vascular cambium is formed from the parenchyma cells between the primary xylem and primary phloem;
次生结构发生于根毛区，维管形成层由初生木质部和初生韧皮部之间的薄壁细胞转化形成；
Secondary structure occurs in the root hair zone, and vascular cambium is formed from the parenchyma cells between the primary xylem and primary phloem;
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