xylem parenchyma

The xylem parenchyma cell wall in roots of 2.47 % salinity highly lignified and thickened , The secondary growth in high salinity was in advance and secondary structures developed .

根中木薄壁细胞壁木质化加厚程度加强，次生生长提前，次生结构逐渐发达。

The absorbable root length density , density of xylem parenchyma cells and vessel numbers in root and stem can be used as measuring index of resistance to verticillium wilt in cotton .

棉花根系的吸收根根长密度，根和茎的薄层细胞密度，导管数可以作为对黄萎病抗性的检测指标。

The results showed that ginsenosides distributed mainly in the assimilating tissue and phloem parenchyma cells , very little in collenchyma , epidermis and phelloderm , and no coloration in xylem and pith parenchyma .

结果表明，绞股蓝人参皂甙主要分布在营养器官的同化组织及韧皮部薄壁细胞中，厚角组织、表皮及周皮的栓内层也有少量分布，木质部和髓薄壁组织中无皂甙分布；

The callus started to produce near the surface of the wound from the remaining immature xylem cells including xylem parenchyma cells and xylem ray parenchyma cells , and the vascular cambium was gradually initiated within the callus .

愈伤组织由靠近伤口表面未成熟的本薄壁组织细胞和木射线细胞分裂产生，维管形成层在愈伤组织内层发生，且是一个渐进的过程。

Xylem is constructed by xylem parenchyma , xylon and tracheary element ( TE ) which is a kind of cell of specialization .

木质部是由木薄壁细胞、木纤维和管状分子（trachearyelement，TE）组成的，管状分子TE是一种高度特化的细胞。