木质部薄壁组织

The Cork was consisted of five or six layer long cells. The secondary phloem occupied 46% of the diameter of root, and the parenchymas cell was abundant of the inclusions. The secondary xylem consisted of vessel, xylary radial ,and a little of xylary parenchyma cells. Some segment of hypha, swelled hypha, pelotons and conidiophore were colonied in cork and secondary phloem.

周皮由木栓层，木栓形成层和栓内层组成，其中木栓层由5～6 列长形细胞组成；维管组织中次生韧皮部所占根径的比例达46%，其薄壁细胞中内含物较丰富，次生木质部中分布有导管和木射线及少量木薄壁组织；在格木木栓层和次生韧皮部中分布有菌丝片段、膨大的菌丝和菌丝团及分生孢子。

The protoxylem vessels initiated lignification in the early stage of vascular bundle differentiation, whereas metaxylem vessels and fiber walls started lignification from the middle lamella and cell comers after completion of vascular bundle differentiation. The walls of most parenchyma cells lignified after the stem reached its full height, while a few parenchyma cells remained non-lignified even the culm is 7 years old.

研究结果表明：毛竹茎的原生木质部导管在维管束发育早期就已木质化；后生木质部导管和纤维细胞在维管束分化完成后，自胞间层和细胞角隅处开始木质化；基本薄壁组织细胞木质化的发生较晚，通常在茎的节间完成伸长生长后才开始，但也有少数薄壁组织细胞始终保持非木质化的薄壁状态。

The abnormality in parencyhyma among the vascular bundle, the parenchyma cells near periderm broken cleft, produced crannies and developed a group of deep color unusual tissues. As well as the disrepair phenomena often happened in the timber parenchyma cell near xylem.

3维管束间的薄壁组织异常，近周皮附近的薄壁细胞组织破裂产生裂隙，产生染色较深的一群异样组织，木质部附近的木薄壁细胞有破损现象。

As the plants grew for a longer time the cells in the phellem of the taproots become smaller in size and closer in arrangement and calcium oxalate crystal declined in quantity in the phelloderm of the taproots all the taproots had three secretory canals but on average the calibers of the canals gradually become smaller the parenchyma cracks in outer phloem and the xylem part near the root center gradually increased in size ,and the area ratios of phloem to xylem continuously decreased the vessel and vessel-layer numbers in secondary xylem of the transplanted .

不同生长年份的移山参主根结构具有一定差异：随生长年份的增长，木栓层细胞体积变小，排列趋于紧密；栓内层草酸钙结晶越来越少；分泌道均为3轮，但平均口径逐渐减小；韧皮部外侧和木质部靠近根中央处的薄壁组织的裂隙逐渐增大；韧皮部与木质部的面积比则不断下降；12年，16年生移山参主根次生木质部中导管数量和层数明显多于8年生。

Sapwood The outer living xylem cells in a tree trunk, consisting of secondary xylem elements, that are actively involved in water transport and food storage.

边材：由树干近外方的有生命的木质部细胞构成，包括次生木质部、薄壁组织和髓射线。在植物的水分运输及养料储存方面起重要作用。

The interfascicular cambium and INTRAFASCICULAR CAMBIUM link into a complete cambium cylinder that cuts off secondary xylem tissue to the inside, secondary phloem tissue to the outside, and parenchyma cells both sides.

束间形成层和束中形成层组成一个完整的形成层环。形成层以内为次生木质部，形成层以外是次生韧皮部。薄壁组织细胞形成维管射线。

And it has been found that in the roots of these vegetables there were aboundant sclerenchymatous cells between the vessels of secondary xylem.

文中对水萝卜、芥菜等根的增粗提出看法，认为不是简单的次生木质部特别发达，而是次生木质部的大型薄壁细胞中散生着成群的小型形成层状细胞，由它们分化成维管组织。

The study reveals that the secondary xylem of 6 mangrove species of Sonneratia possesses the following characteristics:the diameter of vessel is small,the distribution frequency of vessel is high,the reperforating rate is high,the wall of vessel is thick,the wall of fibre is relatively thick and the wood parenchyma is short or sparse,whish is suitable with the environment.

应用光镜及扫描电镜对生长在热带、亚热带海岸潮间带的 6种海桑属红树植物的次生木质部进行了解剖学研究表明：海桑属 6种红树植物的次生木质部具有导管直径小，导管分布频率高，复孔率高，导管壁厚和纤维壁较厚且具次生加厚，木薄壁组织缺乏或稀少等与环境相适应的特点。

Mycelium and spores enter wounds and move through the xylem and into the ray parenchyma cells.

菌丝体和孢子进入伤口并通过木质部移动并扩散到薄壁组织细胞。

Thefeatures of floral and leaf morphogenesis , the variation of perforation plate of vessels ,the contact types between vessels and xylem parenchyma cells , the organic anatomy ofC .

本文从连香树花和叶的形态发生与发育，导管分子穿孔板韵变异，导管分子间以及导管分子与木质部薄壁组织细胞的接触方式，器官的解剖结构等方面进行了研究。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐