查询词典 vascular bundle

Bicollateral bundle The arrangement of tissues in the vascular bundles in which the phloem is situated on both sides of the xylem.

双韧维管束：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。

The cells of the bundle sheath that surround the vascular tissues are large and contain specialized elongated chloroplasts that do not contain grana, but form starch grains.

它的特点为：围绕在维管组织外层的维管束薄壁细胞较大，并含有较大的叶绿体，这些叶绿体中不含基粒，但形成淀粉粒。

Using image processing technology, we analyze the size and shape of cell wall crystal region of bamboo's cross section during entire growth from bamboo shoot to the mature bamboo. Using region segmentation, we study the forming and distributing characteristic of crystal regions of the fiber cap、 proto-sieve 、 thin-walled cell of vascular bundle of bamboo's cross section.

本文应用图像处理技术分析了竹材从竹笋到成竹整个生长阶段横截面细胞壁结晶区的大小及形态，并应用区域分割法研究了竹材微管束横截面中的纤维帽、筛管、薄壁细胞等各部分结晶区的形成过程以及分布特征。

These were raised underinducing condition to test if any morphology and structure changes. Twenty two Arabidopsismutants had various changes in morphology and anatomical structures. Twenty mutants hadlow germination rate from 10% to 60%, of which 2 had survival rates at 0% and 50%. Fivemutants occurred structure changes in the hypocotyls or stem. One of these lines, namedarris-stem, showed some unique changes: slower growth rate in comparison with the wildtype from germination to florescence; serrated margin of leaf blades, spiral rosette; morebranch in the bottom part of the stem, shorter nodes, twisted stem and branch. There were oneor several arrises along the stem. Across sections of the arrises showed one or several compactcells lumps which were round, made up of several layers of cells, looked like vascular-bundle.

在诱导条件下，这些突变体表现出不同的形态和结构的变化，共有22个表型和结构发生变化。20个突变系发芽率或存活率较低，发芽率由10％—60％，其中2个突变系存活率分别为0％和50％。5个突变系在茎或下胚轴的结构上发生变化，其中一个突变系arris-stem发生如下表型变化：从真叶出现至开花结实的整个生长期，生长速度要明显比野生型拟南芥缓慢；叶缘有明显锯齿，莲座叶呈螺旋状排列；茎的基部有较多侧枝，侧枝间距明显缩短，茎有明显扭曲；突变体茎侧面有1至数条棱形突起，内部存在一至数个排列紧密的细胞团，由多层细胞呈环形排列，细胞壁明显加厚，内部存在管状分子，推测为维管组织。

The color surface, texture, the size of pith and the arrange of vascular bundle was observed with freshed, dried drugs and the transverse section, the effective component of echinacoside and acteoside was analyzed with hplc and the amylose was anlyzed with ultraviolet spectrophotometry.

药材性状和结构直接观察肉苁蓉新鲜及晒干或阴干的表面颜色和质地，以及横切面颜色、质地、中心髓部大小及维管束排列等；高效液相色谱法测定药材有效成分松果菊苷及毛蕊花糖苷的含量；紫外分光光度法测定药材粗多糖含量。

Cutting early leaf group has consider effect on root yield,sugar content and the width of root.Cutting late leaf group considerably decrease the number and density of vascular bundle.Cutting No.1 to No.30 leaves has greatest effects on sugar beet.

为此 ，我们在对旱地甜菜生长规律初步研究的基础上 [4～ 5] ，对旱地甜菜光合叶片生长特性及其对块根产量、含糖量的影响作用进行了研究，以期为旱地甜菜的栽培和育种研究提供依据。1 材料与方法1 。1 试验概况

The experiment with 4 cytoplasmic male sterile and their B-lines to examine characteristics of small vascular bundle, volume, weight, water potential of lodicules between CMS lines and B-lines and among CMS lines by using GLM and multiple comparisons, and correlation analysis was also conducted on the SVB, volume, weight, water potential of lodicules and percentage of glume-gaping grains and percentage of heavily glume-gaping grains on CMS lines.

以具有不同裂颖特性的细胞质雄性不育系福伊A、三香A、丰源A、T98A及其相应保持系为材料，对不育系间以及保持系与不育系间浆片的小维管束性状值、体积、重量、水势进行方差分析和多重比较，并对不育系浆片的小维管束性状值、体积、重量、水势与其种子裂颖率和裂颖度进行相关分析。

The quantity and cell size of the xylem and phloem of the leaf vascular bundle in P. yunnanensis Franch.(Kunming, mid-part of Yunnan) was relatively less and smaller than that in south-east of Yunnan .

滇中地区的云南松，其针叶维管束内木质部和韧皮部的数量和组成分子的大小比滇东南地区的少且相对较小。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。