维管束

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。

The main fi ndings were i copper was strongly bound to organic layer and seemed to be the main pollutant in the ecosystem while zinc was the most mobile element and did not accumulate to any specifi c part of the ecosystem, ii the forest mosses and epiphytic lichens were the most sensitive plant species and the seedlings of the vascular plants that had survived near the smelter were absent, iii there was a highly resistant soil decomposer community near the smelter although the activity of the soil animals and microbiota was low and their community structure altered, iv many insect species also suffered from pollution although the adverse effects caused by forest pests increased with pollutant load, v the low survival rate and breeding success of hole-nesting passerines near the smelter was caused by habitat changes and the quality of food, vi the adverse effects seem to be to some extent reversible after decreased pollutant load or remediation actions.

主要fi ndings是i铜强烈一定到有机层数、并且似乎是主要污染物在生态系、当锌是最流动的元素，并且没有积累对生态系时的任何specifi c零件， ii森林青苔和附生植物地衣是含羞草种类，并且在精炼工附近生存了是缺席维管束植物的幼木， iii有一个高度抗性土壤decomposer社区在精炼工附近、虽然土壤动物和microbiota的活动是低的、并且他们的修改过的社区结构、iv许多昆虫种类也遭受污染、虽然森林造成的不利影响虫增加了与污染物装载、v孔嵌套雀形目鸟的低生存率和繁殖的成功在精炼工附近是由栖所变动造成的，并且食物的质量， vi不利影响似乎在某种程度上是双面布料在减少的污染物装载或治疗行动以后。

On the other hand,the means have no apparent influences on soil and the growth of reed,furthermore,it provides suitable water and fertilizer to reed and promote reed to grow.

芦苇是一种水生维管束植物，它广泛生长在我国南北方的河湖岸边，产量高，用途广，它不仅是优良的草类制浆造纸原料，还广泛应用于农业和建筑业中，在我国国民经济中起着重要的作用。

Vascular bundles ± scattered in transverse section in a monocotyledonlike manner.

维管束多少星散的横切面在一monocotyledonlike 方式。

Somatic embryos can be produced both from the surface and the inner of the calli. Embryogenic cell has normal shape, dense cytoplasm , clear nucleolus, hearty metabolize; Plantlet regenerations were developed from global embryo, heart-shaped embryo, torpedo-shaped embryo and cotyledon embryo, in which the V-shaped vessel vascular bundles and shoot tip meristem and root tip meristem were observed.

胚性细胞多为椭圆形，细胞质浓厚，核仁明显，代谢旺盛；体细胞胚经过球形胚、心形胚、鱼雷形胚和子叶胚而发育成再生植株，子叶期体细胞胚可观察到明显的V型维管束、茎尖分生组织以及根尖分生组织。

The mutant displays defects in both compound leaf architecture and leaflets polarity pattern. Backcross test indicates the nl1 phenotype is caused by mutation on a single recessive locus.

研究显示nll突变表型是由单位点隐性突变造成的，突变体中小叶原基提前起始、小叶极性模式改变、叶脉模式改变，同时影响花器官发育和茎维管束模式建成。

The mutant displays defects in both compound leaf architecture andleaflets polarity pattern. Backcross test indicates the nl1 phenotype is caused by mutation ona single recessive locus.

研究显示nl1突变表型是由单位点隐性突变造成的，突变体中小叶原基提前起始、小叶极性模式改变、叶脉模式改变，同时影响花器官发育和茎维管束模式建成。

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。