木材形成是一个复杂的生物学过程，是维管形成层生长和分化出次生组织的结果。
Wood formation is a complex process composing many biological events, occurs as a result of growth and differentiation of the vascular cambium.
次生木质部由孔纹导管、薄壁组织及射线所组成。
Secondary xylem consists of pitted vessels, parenchyma fibers and rays.
结果表明，移山参主根结构由周皮和次生维管组织组成。
The results showed that the taproots of transplanted P. ginseng plants consist of periderm and secondary vascular tissue.
处在酸性垒的原植物次生木质部组织被二氧化硅替换而成硅化木。
The secondary xylem of the original plants in local acidic environment was replaced by silica and turned into fossil woods.
红树植物导管数量多、管孔小、机械组织为韧型纤维，薄壁组织次生加厚明显是适应环境的特征。
Many vessel numbers, small pore, libriform fibres (mechanical tissue)and obvious secondary thickening of xylem tissue are the features of adaptation to the environment.
利用组织培养技术生产次生代谢产物前景广阔。
The prospect of producing the secondary metabolites by the tissue culture is wide.
具有次生结构，次生保护组织为周皮。
It had secondary structure and the secondary protective tissue was periderm.
结果表明：不同直径大小的横走侧根均由周皮、次生维管组织和四原型的初生木质部构成。
The results showed that all the cross branch roots of different sizes consisted of periderm, secondary vascular tissue and tetrarch primary xylem.
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.
基本组织长、短细胞次生壁结构具有明显的差异。
There were significant differences between the secondary walls of long cells and those of the short cells.
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.
采用气相色谱法对不同品种自花授粉后到第一次生理落果期梨雌蕊组织或幼果中的IAA、ABA含量变化进行了研究。
We used gas chromatography to study the quantity of IAA and ABA in pear young fruits of different varieties from self-pollination to first physiological fruit-falling period.
另一种为半透明的松散型愈伤组织，没有能诱导其再分化，却是进行细胞培养生产次生代谢产物的优良材料。
The other type of callus was loose and could not be induced to differentiate, but it was proved to be excellent material for culturing secondary metabolin.
方法：将丹参外植体培养在含不同激素配比的诱导培养基上，并对其愈伤组织中所含次生代谢产物进行分析。
Method:Study the development of allochtonic formations in the callus from explants of Salvia miltiorrhiza cultured on hormones of different content ratios in the medium.
次生生长后产生周皮、皮孔和次生维管组织。
Periderm, lenticelle and secondary vascular tissue in the gynophore are produced due to its secondary growth.
结果与结论紫玉盘的茎次生构造由周皮、皮层及维管组织组成；
Results and Conclusion The secondary structure of the stem of Uvaria microcarpa consisted of the periderm, cortex and vascular cylinder.
次生生长包括维管组织形成、次生细胞壁形成、木质化、PCD以及心材形成等过程。
The secondary growth includes several consecutive processes such as vascular tissue differentiation, secondary cell wall deposition, lignification, PCD and heart wood formation.
次生维管组织为大黄多糖贮藏和积累的主要组织。
The secondary vascular tissues are the chief tissues that accumulate and store rhubarb polysaccharide in rhizome.
众所周知，树木次生维管组织的发育具有内在的节律性，与此同时维管组织的细胞内含物也会发生动态变化。
It is well known that the developmental inherent rhythm occurs during the development of secondary vascular tissue. Synchronously, the cell ergastic substance shows dynamic changes.
结论实验确定了冬凌草愈伤组织培养的最佳碳源种类、浓度及氮源比例，表明不同碳源、氮源对冬凌草愈伤组织生长和次生代谢物合成有显著影响。
The best carbon source and its concentration, nitrogen sources for the growth of Rabdosia rubescens (Henmsl. ) Hara callus and the synthesis of secondary metabolite were confirmed.
丹参成熟的发根培养体系为通过生物或非生物诱导作用提高目标次生代谢产物的含量提供了稳定可靠的组织培养平台。
S. miltiorrhiza hairy root cultures provide a stable and efficient platform for active constituent accumulations by using elicitation with suitable biotic and abiotic elicitors.
丹参成熟的发根培养体系为通过生物或非生物诱导作用提高目标次生代谢产物的含量提供了稳定可靠的组织培养平台。
S. miltiorrhiza hairy root cultures provide a stable and efficient platform for active constituent accumulations by using elicitation with suitable biotic and abiotic elicitors.
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