树皮的汞含量与韧皮部相近。
根的次生韧皮部则由筛胞和韧皮薄壁细胞组成。
The secondary phloem consisted of sieve cells and phloem parenchymas.
韧皮部外有发达的韧皮纤维和较多的蛋白细胞。
There are more developed phloem fiber and many albumin cells surround the phloem.
韧皮部及其邻近组织是大多数蚜虫的主要取食部位。
Phloem elements and adjacent tissues are the principal feeding sites for most aphids.
初生韧皮部：指幼嫩植物中来源于原形成层的韧皮部。
Primary phloem PHLOEM derived from the procambium in the young plant.
在横切面上，次生韧皮部的面积比次生木质部大得多。
In the transection section, the area of secondary phloem is much larger than secondary xylem.
在茎的次生结构中皮层与韧皮部之间有一层扁平形细胞；
There is a layer of compressed cells in the secondary structure of stem.
维管束由维管束鞘、木质部、韧皮部和大型薄壁细胞组成。
The vascular bundle consists of vascular bundle sheath, xylem, phloem and big parenchymatous cells.
在割胶树的树皮中，有输导功能的韧皮部的厚度不超过1毫米。
In the bark of tapped trees, the thickness of the conducting phloem is less than 1 mm.
这些蛋白质积累在韧皮薄壁细胞和韧皮射线细胞的中央大液泡里。
They were accumulated in the large central vacuoles of secondary phloem parenchyma cells and secondary phloem ray cells.
同化物在韧皮部中以液流形式运输，液流中的水主要来自木质部。
The assimilate transports in the phloem by liquid form and the water of the liquid mainly comes from the xylem.
韧皮部溢泌速率降低伴随汁液中钾离子浓度降低和蔗糖浓度增高。
The fall of phloem exudation rate concurred with a decrease of potassium concentration and an increase of sucrose concentration of sap.
结果大黄中的活性成分含量以韧皮部最高，髓部次之，木质部最低。
Result The active component content in phloem was the highest, while, successively, in pith and in xylem.
每个维管束的韧皮部外面有数层厚壁细胞，增加叶柄的机械支持作用。
There are some sclerenchymatous cells outside the phloem of each vascular bundle to increase the supporting force of the petiole.
是初生木质部的内，外方都有初生韧皮部分布的一种维管束排列方式。
Bicollateral bundle the arrangement of tissues in the vascular bundles in which the phloem is situated on both sides of the xylem.
磷高效小麦基因型的韧皮部蔗糖运输速率和根冠比低于磷低效小麦基因型；
Compared to low P efficient genotype, high P efficient genotype was lower in phloem sugar translocation rate and R/S ratio.
异面叶，叶肉组织中含有晶体，韧皮部内富含含盐液泡泡，机械组织发达。
Bifacial leaf and mesophyll tissue contain crystals, phloem is rich in saliferous vacuoles, and the mechanical tissue is developed.
一旦口针进入韧皮部持续吸食阶段，蚜虫在三个部位的取食行为没有太大的差异。
And no significant differences were found in feeding behaviors among aphids on three plant parts once sustained ingestion started in the phloem.
本文就树干注入农药，对木质部、韧皮部及周皮和整个树体是否产生不良影响做出评价。
The harmful effect of injecting chemical into tree on the xylem, bast, periderm and tree body was studied.
结果：野生狭叶柴胡的木栓层，韧皮部，木质部的显微特征均于药典上的记载有所不同。
Result: The phellem, phloem and xylem of wild bupleurum scorzonerifolium are different from those in the pharmacopoeia .
汞通过韧皮部被转运到树皮中，有选择性地在其中沉积，而非在自己不易更新的部位沉积。
Mercury is carried there by the phloem and selectively deposited in it, rather than in the plants' more permanent parts.
残存的韧皮部也可以脱分化形成愈伤组织，此外，还存在愈伤组织源于木质部的情况。
The rest of phloem also produced callus through dedifferentiation. In addition, there was callus from xylem.
与具功能韧皮部相比，不具功能韧皮部的组成分子在形态、结构及排列上均发生显著变化。
Compared with functioning phloem, the constituents of nonfunctioning phloem change greatly in form, structure and arrangement.
轴向系统由筛胞、韧皮薄壁组织细胞、蛋白细胞和韧皮纤维组成，径向系统由韧皮射线组成。
In the axial systems, the phloem consists of sieve cells, phloem parenchyma cells, albuminous cell and phloem fibers. In the radial systems, it consists of phloem rays.
成熟叶片小叶脉的韧皮细胞发现有大量的金颗粒标记，金颗粒主要标记在传递细胞的细胞壁中。
Many gold particles were distributed over the phloem cells of the fine veins of the mature leaves, and were mainly located in the cell wall of the transfer cells.
黄檗幼树根韧皮部和茎干基部的韧皮部中主要药用成分含量很高，而叶片、木质部和周皮很低。
The alkaloid contents were highest in root and stem base phloem of Amur corktree saplings, and lower in leaves, xylem and periderm.
黄檗幼树根韧皮部和茎干基部的韧皮部中主要药用成分含量很高，而叶片、木质部和周皮很低。
The alkaloid contents were highest in root and stem base phloem of Amur corktree saplings, and lower in leaves, xylem and periderm.
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