The cells from the division transformed into cambium cell groups ( root initials);

The present results indicated the remarkable impact of salt stress on cambium cell activity and secondary xylem cell differentiation of both root and stem.

显微结构观测表明，盐胁迫对根和茎形成层细胞的活动和次生韧皮部和木质部细胞的分化产生显著影响。

It was analysed that the phenomenon was related to the divide and differentiate of vascular cambium cell.

分析此现象可能与维管形成层细胞的分裂分化作用有关。

The starch of hard species disappeared completely, content of sugar were high fat and lipids were concentrated cambium layer.

其中，抗寒种类淀粉粒小且水解彻底，还原糖含量高，脂类物质在形成层处高度聚集。

Four weeks after operation, the newborn trabecular in the group of the cambium layer facing toward the bone was more than the other two groups.

4周生发层朝向骨组，新生骨小梁较另外两组显著增多。

I raise the possibility of rhabdomyosarcoma with characteristic cambium layer under normal epithelia and possible "strap" cells.

肉瘤成分可能是横纹肌肉瘤，因为正常上皮下方见到特征性的生发层和可疑“带状细胞”。

Intrafascicular cambium ( fascicular cambium) The part of the VASCULAR CAMBIUM within the vascular between the xylem and phloem.

束中形成层：是位于木质部和韧皮部构成的维管束内的一部分维管形成层。

The primary xylem of root is diarch, of which developmental process contains primary growth and secondary growth. Secondary growth mainly depends on the activity of the vascular cambium and cork cambium.

其根为二原型，发育过程可分为初生生长和次生生长，成熟根的结构以次生结构为主，次生生长主要依靠维管形成层和木栓形成层的活动来完成。

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

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。

About 15 days after girdling, a cork cambium developed near the surface of callus, then developed normal periderm rapidly.

大约15天左右在愈伤组织近表面细胞中发生木栓形成层，以后迅速形成正常的周皮。

The cork cambium originated from pericyclic cells that resumed their dividing capabilities.

其木栓形成层由中柱鞘细胞恢复分裂能力而形成。

Active rule of cork cambium is different in different trees, so form the many types of bark.

由于木栓形成层活动的规律不同，所以出现有各种各样的树皮。

The secondary growth mainly relied on activities of vascular cambium and cork cambium.

次生生长主要是依靠维管形成层和木栓形成层的活动来完成。

Meanwhile, paraffin-cut section method was used for studying on callus formation, cork cambium and vascular cambium initiation.

同时，运用石蜡切片法研究剥皮后愈伤组织的形成、木栓形成层和维管形成层的发生；

With the progressive development of stem, the activity of vascular cambium began. The fascicular cambium differentiated into secondary xylem and secondary phloem, while the interfascicular cambium only differentiated into wide ray of parenchyma tissue.

随着茎的继续发育，维管形成层开始活动，由束中形成层产生次生韧皮部和次生木质部分子；而束间形成层仅产生薄壁细胞组成宽的射线。

As the vascular cambium was initiated, the interfascicular cambium was formed on the adaxial side of secondary phloem produced by the cambium. phloem developed well;

但是当维管形成层形成时，束间形成层在初生乳管的近轴一侧产生，因而随着次生形成层的活动，初生乳管被定位于次生韧皮部远轴一侧。

However, initiation of cambial activity with cell proliferation and increase in immature phloem cells was about a week later than bud sprouting.

在春季芽膨大前，形成层带已经进入了恢复活动期。在芽展开后一周形成层进入活动期，细胞开始分裂，细胞层数也有所增加，同时分化出未成熟的韧皮部细胞。

Meanwhile, the radial width of cambial fusiform cell had negative correlations with fiber length, ratio of fiber length to width and ratio of ray tissue, and a positive correlation existed between tangential width of cambial fusiform cell and fiber width.

形成层纺锤形细胞的径向宽度与纤维长度、纤维长宽比和射线比量呈显著负相关；形成层纺锤形细胞的弦向宽度与纤维宽度呈显著正相关。

No significant differences in tangential and radial width of cambial fusiform cell, length of vessel element, ratio of fiber and ray tissue were found among different stages.

结果表明，形成层纺锤形细胞的径向和弦向宽度在活动期不同阶段差异不显著，而纤维长度、纤维宽度、壁腔比、微纤丝角、导管分布频率和胞壁率差异极显著；

Correlation analysis indicated that cambial cell number had strong negative correlations with fiber length, ratio of fiber length to width and ratio of fiber wall to lumen, and a positive correlation with fiber width.

形成层带细胞层数与纤维长度、纤维长宽比和壁腔比呈极显著负相关，与纤维宽度呈显著正相关；

Between primary xylem and primary phloem there are 2& 3 layers of parenchymatous cells, regularly or irregularly arranged, but no cambial zone can be recogni-zed.

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。