木质部的

基本解释 (translations)

xylic

与木质部的相关的网络例句 [注：此内容来源于网络，仅供参考]

Basipetal differentiation is seen in the formation of proto-and metaxylem in the stem.

在茎原生木质部和次生木质部的形成过程中可以看到这种类型的分化。

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。

The part of the primary xylem that differentiates after the protoxylem and is characterized by broader vessels and tracheids.

后生木质部初生木质部中不同于原生木质部的一部分，以更宽的导管和管胞为特征

Our results showed that the transportation of JA from phloem to xylem occurred mainly through ray parenchyma cells and cambium regions, and that JA could be transported rapidly upwards and downwards through vessel tube and sieve tube.

3H—JA分布在筛管、次生韧皮部的薄壁细胞和射线细胞、形成层区以及导管、次生木质部的薄壁细胞和射线细胞，其中，在韧皮部和木质部的射线细胞及筛管、导管壁周围分布最多。

Of or relating to a xylem whose early development is toward the center.

木质部的木质部或与木质部相关的，其早期发展是朝向中心的

According to the arra ngem ent of phloem and xylem, shape of xylem and the Arranging way of xylem rays, the midrib-bundles were divided into five forms :(1) amphicribral round bundle;(2 ) pinnate-ray amphicribral reniform bundle;(3) fan-ray amphicribral reniform b undle;(4) almost-amphicribral bundle;(5) collateral bundle.

根据中脉维管束结构特点：木质部与韧皮部的位置，木质部的形状，木射线排列的方式，可分为5个类型：（1）圆形周韧维管束；（2）羽线肾形周韧维管束；（3）扇线肾形周韧维管束；（4）近周韧维管束；（5）下韧维管束。

The size of UE and LE cell is bigger in karst areas variety than in non-karst areas variety, and the arrange of palisade and spongy tissue is more compacter . Sunken stomata exist only in lower epidermis .The stomata are of renal type. Karst Area variety stomatal is density.

岩溶地区品种茎的表皮细胞厚度大于非岩溶地区品种；皮层层数较非岩溶地区品种多，细胞排列紧密，髓部不为空；在同倍显微镜下岩溶地区品种木质部脊较多，但木质部的平均长度和导管的直径比非岩溶地区的都要小。

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。

Parviflora in shrub communities had the xeromorphic traits in the aspects of ① their secondary xylem had shorter vessel elements, higher vessel frequency, less single porous percentage, lower rays, higher relative conductivity and lower vulnerability index, and ② their leaf had lower water potential, lower water content and free water content, higher bound water content, high ratio of bound to free water content, and less specific leaf area.

扁担木叶片、次生木质部的解剖和水分生理特征均表现出一定的可塑性，其可塑性指数高低顺序为次生木质部解剖特征（0、24）〉水分生理特征（0.19）〉叶片解剖特征（0.18）、与侧柏林和混交林相比，灌丛中扁担木个体对干旱生境有一定的适应能力，表现在次生木质部导管分子短，导管频率高，单孔率低，木纤维短，射线矮小，具有较大的相对输导率和较小的脆性指数；叶片水势、组织含水量、自由水含量较低，叶面积、比叶面积较小，而束缚水含量、束缚水自由水比值较高。

In addition, the repair method can also be filled tree holes, stuffing is best to use small gravel and cement mixture to be compacted filler, filler to strengthen the connection with the xylem, inside the cave can be a number of electroplating nails nails, holes dug in on both sides 4 centimeters deep groove at the bottom of filler from the start, each 20-25 cm for the layer, using linoleum separated from each floor should be inclined slightly outward to facilitate drainage, the edge should not exceed xylem, so that cambium in the formation of callus on it.

另外，也可用填充法修补树洞，填充物最好用小石砾和水泥的混合物，填充物必须压实，为加强填料与木质部的连接，洞内可钉若干电镀铁钉，洞口内两侧挖4厘米深的凹槽，填充物从底部开始，每20厘米至25厘米为一层，用油毡隔开，每层都要向外略斜，以利排水，边缘应不超过木质部，使形成层能在它上面形成愈伤组织。

与木质部的相关的网络解释 [注：此内容来源于网络，仅供参考]

metaxylem：后生木质部

一、根(root)的功能(二)根系(root system)的类型分化成熟方式为:外始式(exarch),原生木质部(protoxylem)位于外方,后生木质部(metaxylem)位于内方. 分化成熟方式为:外始式,原生韧皮部(protophloem)位于外方,初生韧皮部(metaphloem)位于内方.

protoxylem：原生木质部

一、根(root)的功能(二)根系(root system)的类型分化成熟方式为:外始式(exarch),原生木质部(protoxylem)位于外方,后生木质部(metaxylem)位于内方. 分化成熟方式为:外始式,原生韧皮部(protophloem)位于外方,初生韧皮部(metaphloem)位于内方.

primary xylem：初生木质部

(2)初生木质部(primary xylem): 根的初生木质部一般由导管、管胞、木纤维及木薄壁细胞组成,其主要功能是输导水分和溶质. 初生木质部具数目不同的辐射状棱角(初生木质部脊、木质部束),在横切面上,整个木质部的形状似星芒状,

secondary xylem：次生木质部

根据出现时间的早晚和来源,木质部可划分为初生木质部(primary xylem)和次生木质部(secondary xylem). 出现最早,在茎和叶中,原生木质部着生于伸长活动活跃的组织中,因为它不能跟随着伸长,所以会被拉伸而导致破坏,形成一片原生木质部缺失(Protoxylemlacuna)区域.

diarch：二原型

在辐射维管束中其维管束数目多的,称多原型. 木质部与韧皮部交互排列,由于原生木质部是构成木质部的中心,因此根据其数目(n)而以单原型(monarch)、二原型(diarch)等表示之. 单子叶植物多为多原型.

endarch：内始式

茎内初生木质部的发育顺序是内始式(endarch)的,和根不同. 茎内的原生木质部居内方,由管径较小的环纹或螺纹导管组成;后生木质部居外方,由管径较大的梯纹、网纹或孔纹导管组成,它们是初生木质部中起主要作用的部分,其中以孔纹导管较为普遍.

endarch：木质部的内源型

最后产物 end products | 木质部的内源型 endarch | 内源型维管束 endarch bundle

monoxylic：单一木质部的

单一寄生性 monoxeny | 单一木质部的 monoxylic | 单合子性的 monozygotic

Monozygotic：单合子性的

单一木质部的 monoxylic | 单合子性的 monozygotic | 一卵性双生儿;单合子双生 monozygotic twins

pentarch：五原型

初生木质部具数目不同的辐射状棱角(初生木质部脊、木质部束),在横切面上,整个木质部的形状似星芒状,其棱角的数目各种植物各不相同,可以分为二原型(diarch)、四原型(tetrarch)、五原型(pentarch)、六原型及多元型.