白杨

1根据PCR检测结果可知，在转基因三倍体毛白杨42个系号中，有33个系号检测到Bt&API基因，阳性率达到80%。

By the PCR analysis , 80 % of all the 42 clones of the triploid of Chinese white poplar there are 33 clones have been tested the Bt-API genes .

采用光学显微镜、SEM、TEM技术，研究了三倍体毛白杨纤维形态特征、解剖结构及超微结构。结果表明：三倍体毛白杨纤维形态特征与普通毛白杨相似；

The fiber morphological characteristics , anatomical structure and ultrastructure of triploid Chinese white poplar are studied with light microscope , scanning electron microscope and transmission electron microscope .

沿路有很多高大的白杨树。

There are great white poplars along the road .

该处曾有一棵高大的白杨树。

A tall poplar tree once stood there .

桦树种子从7月份种子成熟开始飞散，一直到第二年春天，但白杨的种子仅在夏天短期内就飞散完毕。

Seed of birch flies from the time of seed maturity in July until the following spring , but aspen seed only during a short period in summer .

Fuzzy关系方程在毛白杨苗木生长性状相关分析中的应用

Application of fuzzy relationship equation in correlative analysis between the growth and morphological features of Populus tomentosa saplings

河北毛白杨巯基蛋白酶抑制剂基因cDNA的克隆及序列分析

Cloning and Sequencing a cDNA of Cystatins from Poplar Landrace in Hebei

芽变毛白杨插条内POD活性比毛白杨低，在生根过程中与另一亲缘种大官杨相比，POD活性变化趋势相反；

The activity of peroxidase ( POD ) in the mutant was lower than that in P.tomentosa .

研究了VA菌根与外生菌根混合接种对毛白杨盆栽苗生长、P营养、光合及蒸腾特性的影响，并分析了原因。

Effects of mixed inoculation with VA-and ecto-mycorrhizal fungi on photosynthesis and transpiration by Populus tomentosa in pot culture is studied .

毛白杨成熟叶片基因组DNA提取方法的比较研究毛白杨与瘿瘤解剖特性和化学组成变异分析

Compare on the Different Genome DNA Extracting Methods for Mature Populus tomentosa Leaves Variation Analysis on Anatomical Properties and Chemical Compositions between Chinese White Poplar and Burl

研究结果表明：反应温度、作用pH值、酶的用量和作用时间对纤维素酶解爆破后的毛白杨木粉都有很大的影响。

The results are : reaction temperature , solution pH value , loading of cellulase and hydrolysis time have great effect on cellulase hydrolysis degree .

用NAA处理毛白杨插穗对某些生理过程和生根的影响

Effects of NAA treatment on physiological processes and root formation of Populus tomentosa cuttings

采用毛白杨三倍体幼叶作为外植体进行组织培养，以MS为基本培养基获得了再生植株。

Regenerating plants were produced from immature leaves of the triploid of Populus tomentosa by tissue culture on MS basic medium with different plant hormone .

白杨素对人胃癌SGC-7901细胞的体内抑制作用

Inhibitory Effect of Chrysin on the Gastric Cancer SGC-7901 Cells in Vivo

经盐胁迫处理后，随着盐浓度的升高，毛白杨无性系植株的叶片内叶绿素含量逐渐降低，MDA含量逐渐升高，脯氨酸含量先上升后下降。

With the increase of salt concentration , the chlorophyll content decreased ; The proline content fluctuated and the MDA content climbed gradually .

毛白杨苗期VA菌根菌与外生菌根菌接种的研究

Study on Inoculation of VA Mycorrhizal Fungi and Ectomycorrhizal Fungi on Populus tomentosa Carr . Seedling

白杨桉木KP法制浆及漂白性能的研究

Studies on Pulping and Bleaching of Aspen and Eucalyptus

用同位素示踪技术研究NAA在毛白杨插穗生根过程中的作用

Study on Roles of NAA in the Rooting Process of Populus tomentosa Cuttings by means of Radioactive Tracing

方差分析表明桑天牛不同危害程度与毛白杨树体的POD、PPO酶达到1%显著水平。

Variance analysis showed that it arrived 1 % significant level between the different damage level and activity of the above enzymes .

漆酶处理三倍体毛白杨APMP两段纸浆的研究

Study on Alkali Peroxide Mechanical Pulp of Triploid of populus Tomentosa by Laccase Treatment

NaCl胁迫对毛白杨试管小植株叶片离子吸收及荧光诱导动力学参数的影响

Effects of NaCl stress on k ~ + , na ~ + and chlorophyll a fluorescence induction kinetics in leaves of IN VITRO POPLAR PLANTLETS

用FTIR仪器可以分析出，染色材和毛白杨素材的红外光谱图基本形态未变，没有出现新的吸收峰，没有新的官能团产生。

The infrared spectrum of wood and dyed wood analyzed by FTIR showed that neither new absorption peak nor new organic functions regiment appeared during dyeing .

盐土三倍体毛白杨幼树APMP制浆性能的研究

The study on APMP-pulping properties of the young tree of Triploid Chinese Poplar in saline soil

白杨素和它的四乙基二磷酸酯对人宫颈癌Hela细胞增殖和核基质蛋白影响的研究

Effects of Chrysin and Its Tetraethyl Bis-Phosphoric Ester on the Multiplication and Nuclear Matrix Proteins of the Human Cervical Carcinoma Cell Line Hela

本研究初步表明，microRNAs在调控毛白杨对低温胁迫的反应中起着重要作用。

The results demonstrated that Populus microRNAs play critical roles in the cold stress response .

Southern杂交分析得出，Bt基因已成功整合到转基因三倍体毛白杨中，且各系号转入的外源基因均为一个拷贝。

The Bt gene has been successfully conformed to the transgenic triploid of Chinese white poplar and the foreign gene of all the clones were one copy detected by Southern hybridization .

该研究利用X射线测定三倍体毛白杨木材各无性系气干密度，通过适当的数学模型，利用计算机可视化技术对木材密度的分布进行可视化分析，得到了木材横切面密度二维分布图。

This study uses X ray to measure wood density of triploid clones of Populus tomentosa Carr . Based on suitable mathematical model , the distribution of wood density was analyzed by cumputer visible technology .

三倍体毛白杨叶片营养DRIS诊断

Leaf nutrient diagnosis of triploid Populus tomentosa with DRIS

3根据PCR分析及Western杂交、ELISA分析的实验结果，证明Bt基因和蛋白酶抑制剂基因已整合到三倍体毛白杨基因组DNA中。

Proved by the experiment that Bt 's gene and protease inhibitor gene have already combined in genome DNA of triploid of Chinese white poplar according to PCR analysis and western 's hybridization , ELISA .

一个毛白杨MADS盒基因的克隆与功能分析

Isolation and Functional Analysis of a MADS Box Gene in Populus tomentosa