Populu nigra

用法例句

Studies on the attraction to moths of volatile constituents of withered black poplar leaves;

黑杨萎蔫叶片挥发性物质诱集蛾类成虫的研究

THE COMPARATIVE TRIAL OF SOME BLACK POPLAR CLONES IN SOUTHERN OF HENAN PROVINCE;

豫南黑杨派无性系的生长比较试验

The paper analyzed the results of 40 four-year-old black poplar clones grown in Wen Country,north of Henan.

豫北温县40个黑杨无性系4年生试验材料表明:参试无性系胸径、树高、材积等差异达显著水平,用综合法评定了它们的优劣,选择出3个优良无性系,它们的平均材积分别超对照114。

Technology of intersectional crossing between Sect.Aigeiros and Sect.Leuce;

黑杨与白杨远缘杂交技术研究

Karyotype Comparison of Aigeiros Species in Populus;

杨属(Populus)黑杨组(Aigeiros)种(品种)间核型比较

Analysis on clonal nursery selection of Aigeiros;

黑杨无性系的苗期选择分析

G1 (Populus deltoids) is a kind of hybrid popular.

杨树是世界主要的造林和经济树种,在中国和世界各地均有广泛的栽培?格林一号黑杨(G1)是一种欧美杂交杨,具有生长速度快?材质好?适应性强等优点,为目前推广的主要品系之一?本研究选择G1黑杨作为转基因的实验材料,研究了激素浓度等因素对其叶片再生?壮苗?生根等的影响,建立了杨树高频再生体系?几丁质和葡聚糖是许多病原真菌细胞壁结构的重要组成部分?几丁质酶可以将几丁质水解为N-乙酰氨基葡萄糖;β-1,3-葡聚糖酶可以将葡聚糖降解为葡萄糖?大量研究表明,以上两种酶在植物体内体外,对病原真菌的生长均有明显的抑制作用?本研究将这两种酶的编码基因分别构建植物表达载体,以G1黑杨幼叶为外植体,利用改良的农杆菌介导法进行转化,获得转基因植株?具体实验结果如下:1。

The young leaves of Populus deltoids were used as the material andseveral factors such as hormone concentration, explant condition, illuminationcondition, and so on were inv.

杨树是世界上中纬度地区广泛栽培的重要用材树种,具有广泛的工业用途,世界上许多国家把发展杨树作为解决 杨树是世界主要的造林和经济树种,格林一号黑杨(G1)是从欧洲黑杨与美洲黑杨的杂交后代中选育出的一个无性系,具有抗逆能力较强?材质好和速生等优点,在我国北方广大地区既可作为绿化树种,又是制作高级纸的主要纸浆原料之一,在工业用材中发挥重要作用? 本研究以 G1 为实验材料,以其叶片为外植体进行再生培养,系统地研究了激素浓度?叶片生理状态?光照条件等诸多因素对叶片再生的影响,建立了黑杨叶片培养诱导不定芽的高频再生体系?在此基础上,分别用携带 BG2 基因和反义磷脂酶 Dγ基因(PLDγ)的根癌农杆菌介导转化叶片,通过对转化方法和条件的探索,建立了黑杨 G1 的遗传转化体系? 研究结果表明,不同激素浓度配比和 pH 值对芽再生有重要影响,最终以在 MS 基本培养基中附加 0。

Differences among the Leaf δ~(13)C,Long-Term Water Use Efficiencies and Photosynthetic Capabilities of Different Populus deltoides Clones;

黑杨杂交无性系间叶片δ~(13)C、长期水分利用效率和光合特性的研究

Influences of induced resistance in Populus deltoides,treated with methyl salicylic acid, on the growth and development of Clostera anachoreta.;

水杨酸甲酯诱抗黑杨对杨扇舟蛾生长发育的影响

Populus deltoides, Populus tomentosa and triploid clones of Populus tomentosa were examined, by means of analysis of wood properties, chemical components of wood and fiber anatomy as well as APMP pulping properties.

本论文对杨木制APMP漂白化学机械浆主要制浆性能进行了对比研究，研究了引起黑杨APMP纸浆光诱导返黄的主要机理，并进行了抑制光诱导的返色技术措施的研究。

Maked Populu nigra pulp with KP method,the influence of bleaching condition on the quality of the Populu nigra pulp was also carrie d out.

采用KP法制黑杨浆,并研究了不同处理条件下黑杨KP浆的漂白效果。

The influence of bleaching condition to the quality of the Populu nigra kraft pulp was carried out.

采用KP法制黑杨浆 ,并研究了不同处理条件下黑杨KP浆的漂白效

Research on tissue-culture reproductive systems of black poplar group;

黑杨派杨树组培再生系统的研究

Cross-breeding and Hybrid Analysis by SSR Markers between Populus Nigra and P.szechuanica, P.yunnanensis;

欧洲黑杨与川杨、滇杨杂交及杂种苗的SSR分析

Response of Narrow Crown Black Poplar and Narrow Crown Black-Cathay Poplar to Salt Stress

窄冠黑杨与窄冠黑青杨对盐胁迫的响应

The Study on Hybridization between Populus Deltoides Marsh (Ⅰ-69,Ⅰ-57) and P.Cathayana Rehd, P.Szechuanica Schneid, P.Purdomii Rehd and the Investigation, Preliminary Selection of Hybrid Seedlings

美洲黑杨与青杨、川杨、卜氏杨远缘杂交及苗期测定、选择研究

Analysis on Anti-leaf Rust Ability of America Black Poplar×Cathay Poplar Hybrid Clones

美洲黑杨×青杨杂交无性系抗锈病能力分析

Genetic Linkage Mapping and QTLs Analysis for Important Wood Property in F_2 Population of Populus Deltoides×P. cathayana;

美洲黑杨×青杨连锁图构建及重要材性QTLs分析

Study on Resistance Variation of Populus Deltoides to Tetra Lobulifera (Keifer);

美洲黑杨无性系对杨四瘿螨抗性变异的研究

The Studies on Irradiation Effects of ~(60)Co-γ Ray on Four Poplar Cultivars of Sect. Aigeiros

黑杨派4个杨树品种~（60）Co-γ辐射效应研究

Analysis for Causes of Low-quality Sand-break Forest of Populus ×xiaohei T.S. Hwang et Liang in the West of HeiLongjiang;

黑龙江省西部小黑杨低质防风固沙林成因研究

One-year-old seedling traits of Populus deltoides hybrids with P. cathayana,P. szechuanica,and P. purdomii

美洲黑杨与青杨、川杨和卜氏杨人工杂交及杂种苗生长和抗病性状测定

Study on Genetic Variation of Yield Related Characters of Populus Deltoides;

美洲黑杨产量相关性状遗传变异研究

Study on the Transformation of Populus simoniiXP.nigra with the Salt-tolerance Gene(Bet-A);

小黑杨耐盐基因(Bet-A)遗传转化的研究

Studies on photosynthetic characteristics of Populus deltoides from Northern and Southern USA

南北方型美洲黑杨光合作用特性研究

Artificial Hybridization and Seedling Traits Test、Select of Populus Deltoides and P.Cathayana

美洲黑杨与青杨人工杂交及杂种苗苗期性状测定、选择研究

Photosynthetic characteristics of hybrid clones of Populus deltoides and P. ussuriensis

美洲黑杨与大青杨杂种无性系苗期光合特性研究

Effect of Storage Temperature,Water Content and Drying Method on the Storage Capacity of Sect.Aigeiros Poplar Seeds

贮藏温度、含水量及干燥方法对黑杨派杨树种子耐贮性的影响

Construction and analysis of Populus deltoides SSH cDNA library induced by Tetra lobulifera (Keifer)

杨四瘿螨诱导的美洲黑杨抑制消减文库的构建及分析

Genetic Variation in Basic Wood Properties of 36 Clones of Populus deltoides

36个美洲黑杨无性系基本材性遗传变异的研究

Prediction of Wood Production and Quality of Populus Xiaohei Based on Remote Sensing Technology;

基于遥感技术的小黑杨木材产量和质量预测