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The transgenic tobacco plants of sense and antisense NtCDC48 controlled by of a CaMV 35S promoter show different phenoptypes: Comparing with the antisense NtCDC48 transgenic plants, the sense transgenic plants have fewer flowers, but each silique contains more seeds, also indicating that NtCDC48 protein involves in seed development of tobacco.

将NtCDC48基因转入烟草愈伤组织得到正义和反义转基因烟草植株，结果显示正义转基因植株与反义转基因植株相比花头较少，但种荚内种子数却明显多于后者。

The main results are as follows: l.The olfactory response of Tetranychus viennensis to different plants odors: Olfaction takes part in the response during the hawthorn spider mite looking for host plants, that means Tetranychus viennensis were attracted by odors from host plants.

结果如下：1。山楂叶螨的雌成螨对不同植物叶片挥发性物质的嗅觉反应：山楂叶螨在寻找寄主植物的过程中，嗅觉参与反应，即山楂叶螨能被寄主植物释放的气味物质所吸引；不同的寄主植物对山楂叶螨的引诱程度不同，苹果、梨等的引诱作用较强(着螨率95％，77.5％)，日本樱花的引诱作用较弱(着螨率45％)。

Steve Jones is an environmental expert who tries to keep animals and plants from becoming endangered . We are not survive without all the plants and our plants and animols around us .

史蒂夫琼斯是一位环境学专家，他试图让动植物免受濒临灭绝如果没有周围的所有植物和我们的动植物，我们就活不下来。

Mainly belonged to Loranthaceae. Plants of Phacellaria Benth. and their hosts were mainly distributed in tropical and subtropical area. Plants of Phacellaria Benth. maybe originated in tropical area in the south of China before Tertiary. Their ancestors were parasitic on ancestors of some plants of Loranthaceae by chance during Tertiary. It took them millions of years to form a sturdy relationship between parasites and hosts. Ph. rigidula was a hemi-parasitic subshrub. In area observed, its host was mainly Taxillus caloreas var. fargesii.

的硬序重寄生(Ph.rigidula)及其寄主植物做为研究植物与植物间协同进化的材料，对重寄生属植物的起源、与其寄主的分布、硬序重寄生的形态学特性、解剖学以及化学成分进行了研究，结果表明：重寄生属植物主要寄生在桑寄生科植物上，分布区与其寄主的基本一致，均主要分布在东南亚和中国南部的热带与亚热带地区；重寄生属植物可能起源于第三纪之前某一时期的华南热带地区，随后向周边地区扩散。

Water requirements of plants, only 1% of the water is combined into plants, while 99% of the water transpiration by plants.

在植物的需水量中只有1%的水被组合到植物体内，而99%的水被植物蒸腾。

As the complete characteristic curves of reversible pump turbine are often used to calculate the instantaneous parameters, this paper studies the characteristic curve and the wicket closure and opening law in pumped storage plants.Chapter 1 presents the importance and the necessity of this study and reviews the previous related research on hydraulic transient process and valve regulation in pumped storage plants.Chapter 2 analyzes the six collected characteristic curves of reversible pumped turbine and studies their diversification from the point of view of specific speed. The six collected discharge and moment curves with maximum efficiency have been fitted to piecewise continuous curves. This curve-fitting procedure is listed.Chapter 3 takes Liyang Pumped storage plant as an example and analyzes the effect of different characteristic curves on regulation guarantee parameters and the variety of its trochoid during the same operation status.Chapter 4 takes three pumped storage plants with different heads as examples and studies the characteristic of coordinated closure with wicket gate and ball valve and its effect on dynamic pressure in the spiral case, inlet pressure in the draft tube and the rise of rotating speed.Chapter 5 summarizes this paper and point out what should be done in the future research.

由于在过渡过程分析计算中，需要频繁利用可逆式机组的全特性曲线推求机组的瞬时参数，所以本文就特性曲线及关闭规律问题进行了研究，其主要内容如下：第1章，指出本文研究的意义和目的，回顾前人对水力过渡过程、抽水蓄能电站及阀调节的研究成果，在此基础上提出本文的研究内容；第2章，针对收集到的六套特性曲线，从比转速的角度出发来研究可逆式机组特性曲线的变化规律；并对六套曲线的最高效率流量和力矩曲线进行分段拟合，得到各分段函数的具体形式，再通过举例说明最高效率曲线的拟合步骤；第3章，以溧阳抽水蓄能电站为实例，分析讨论不同比转速特性曲线对调保参数造成的影响及对于相同工况其轨迹线的变化；第4章，结合高、中、低三水头段抽水蓄能电站，在导叶直线关闭的基础上，研究导叶与球阀协联关闭规律的特点及对蜗壳动水压力、尾水管进口压力及转速上升造成的影响；第5章，总结全文，提出今后研究的重点和方向。

In these plants, including national key protected wild tea plants, Bole tree, umbrella, flowers and trees, tourism and other 14 kinds of wood; Guangdong Province, there are two kinds of key protected plants.

在这些植物中，其中国家重点保护植物有野茶树、伯乐树、伞花木、观光木等14种；广东省重点保护植物有2种。

The observation showed that sterile plants and fertile plants in the pollen mother cell stage is not very different, when microspore mother cells of male sterile plants enter meiosis period, it could form normal tetrad cell , tetrad cell is normal in early development stage, In the uninucleate microspore stage , tapetal cells were vacuolization, the microspores were extruded to the middle by tapetal cells.

本研究利用石蜡切片法，结合光学显微镜技术对樱桃萝卜核质互作雄性不育系的不育株和对应保持系可育株的花药发育过程进行细胞形态学观察，观察结果表明：不育株与可育株在花粉母细胞时期差别不大，不育株的花药小孢子母细胞进入减数分裂期后，可以正常的形成四分体，四分体前期发育正常，而在单核小孢子期绒毡层细胞出现液泡化，绒毡层细胞向中间挤压小孢子。

It is characterized by simple plants such as liverworts; fossils of plants similar to vascular plants, e.g.

是地球历史上一个相对温暖的时段。

Beijing Botanical Garden in Xiangshan Park, Haidian District, and Yuquan Shan (Western Hills near the Temple of the Reclining Buddha), the approval of the State Council in 1956 the establishment of plants is a scientific research, popularize the knowledge of plants, Tour Watch open, germplasm preservation, promotion of new plants, such as excellent functions of a large-scale botanical gardens.

北京植物园在海淀区香山公园和玉泉山之间，1956年经国务院批准建立，是集植物科学研究、植物知识普及、游览观赏休憩、种质资源保存、新优植物推广等功能为一体的大型综合性植物园。

But this is impossible, as long as it is engaging in a market economy, there are risks in any operation.

但是，这是不可能的，只要是搞市场经济，是有风险的任何行动。

We're on the same wavelength.

我们是同道中人。