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杨树     
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  poplar
     Manipulation of Lignin Biosynthesis of Transgenic Poplar by 4CL Gene
     杨树4CL基因调控木质素生物合成的研究
短句来源
     A Study on Information Extraction of Poplar Resources in Jianhu County Using ASTER Remotely Sensed Datasets
     基于ASTER遥感数据的建湖县杨树信息提取的研究
短句来源
     Molecular Cloning of PtIAA1 and PtABP1 and Their Expression in Poplar
     PtIAA1和PtABP1基因的克隆及其在杨树中的表达
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     A Study on Effects of Biological Mulching on Growth and Soil Properties of Poplar Plantation in Southern Upland Area
     南方山地杨树人工林生物覆盖效应的研究
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     INDUCTION OF HAPLOID POPLAR PLANTLETS FROM POLLEN
     杨树单倍体花粉植株的诱导
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  poplars
     The analytic results show that the fibre Length(L) of the poplars varies from 623.08~ 728.00μm and the width (W) is between 14.38~21.88μm, fibre L/Wrbctwcen 29.78~34.67μm.
     结果表明:8种杨树木材纤维长度为623.08~728.00μm,纤维宽度为19.38~21.88μm,长宽比为29.78~34.67μm。
短句来源
     Among the eleven transgenic clones with Bt Cry1Aa gene, CpTI gene, AaIT gene and Bt + CpTI genes, 4 clones, FB56, FC5, T22, D18, were provided with superiorinsecticidal capacity. The revised mortality of 1st instar larvae reached 84.3%, 98.0%, 91.1% and 90.2% respectively. The insecticidal capacity of transgenic poplars assumed seasonal rhythm.
     转Bt 、CpTI、AaIT 单基因和转Bt+CpTI 双价基因杨树的11 个无性系分别以FB56、FC5、T22 和D18 的杀虫活性最高,对1 龄幼虫12d 的校正死亡率分别达84.3%、98.0%、91.9%和90.2%。
短句来源
     Two kinds of poplar clones wood, poplar 72 (Populus euramericana cv.I-72/58) and poplar 69(P.deltoides cv.I-69/55) were selected as the materials. It was analysed that the difference between heartwood and sapwood about the content of chemical components,pH value and buffer content from the plantation poplars.
     以2个品系人工林杨树木材[欧美杨无性系72杨(Populuseuramericanacv.I-72/58)和69杨(P.deltoidescv.I-69/55)]为对象,分析人工林杨树心材和边材pH值和缓冲容量及化学成分含量之间的差异。
短句来源
     A Study on the Insect-resistance of Transgenic Poplars(NL-80106) Carrying Bt Genes to Micromelalopha troglodyta
     转Bt基因杨树(NL-80106)对杨小舟蛾抗虫性研究
短句来源
     The composition of molecular species and the positional distribution in fatty acids of phosphatidylglycerol (PG) isolated from poplar (Populus deltoides cv.Lux 1 69/55 and Poeuramericana cv.I-45/51) leaves were analyzed by high performance liquid chromatography (HPLC), enzym hydrolysis and gas phase chromatography (GC), and the different cold resistant poplars were compared with respect to the compositions of molecular species of PG isolated from their leaves.
     用高效液相色谱(HPLC)方法分析了杨树叶片磷脂酰甘油(PG)的分子种组成,用酶解和气相色谱(GC)方法分析了PG脂肪酸定位,比较了抗寒性不同的杨树(Populusdeltoidescv.LuxI69/55和Poeuramericanacv.I45/51)叶片PG分子种。
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  poplar tree
     The different kinds of poplar tree were shown to quite distinct in their photosynthtcic ability: rate of net photosynthesis 10.97-17.62 mg CO2·dm-2·h-1;
     我们研究的十个种类杨树的光合作用存在着显著差异,净光合速率在10.97—17.62mgCO_2·dm~(-2)·h~(-1)之间;
短句来源
     Studies on the Insect Community Structure and Diversity of the Poplar Tree in the North of Hebei Province
     河北南部杨树昆虫群落结构及多样性研究
短句来源
     Topdressing of 0.25kg urea for one 6—year—old poplar tree can increase 18.3%~23.0% of the volume, Thus, the gross income of the poplar forest per hectare can increase 184.50~495.00 yuan.
     追肥对1~3a生锦县小钻杨效果不明显,但对进入速生初期阶段4~6a生杨树则效果显著,每株追施尿素0.25kg,可使5~6a生单株材积增加18.3%~23.0%,每ha可增加经济收入184.50~495.00元。
短句来源
     Differentiation and Classification of Poplar Tree in Shelterbelts
     杨树林带树木分化与分级的研究
短句来源
     For grass,annual biomass,dead root biomass,decomposition and growth of roots were 0.501,0.035,0.023,0.691t·hm -2 ,respectively,and the turnover rate was 1.38 times per year. Meanwhile the equation for dry weight loss of fine roots of poplar tree over time was presented as following:lnx/x\-0=0.9159e -0.0014t .
     活草根的年生物量、死根生物量、分解量、生长量和周转率分别 0 .5 0 1、0 .0 35、0 .0 2 3、0 .6 91t·hm-2 和 1.38.同时给出了杨树细根干重损失随分解时间变化的方程 :lnx/x0 =0 .95 15e-0 .0 0 14t.
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  poplar trees
     The result shows that the yield of wheat in the new cultivation patterns is reduced by 10%~15% than that in the mono crop field at the 5th year since poplar trees were incorporated [the cultivation model are (3×3) m×20 m,(3×3) m×30 m,(3×3) m×40 m];
     研究结果表明:5年生杨树杨-粮间作新栽培模式[(3×3)m×20m,(3×3)m×30m,(3×3)m×40m]小麦产量低于对照农田10%~15%、;
短句来源
     Dothiorella gregaria Sacc. was inoculated to susceptible poplar trees with five different methods.
     以五种不同的接种方法,在感病的杨树植株上,接种杨树溃疡病菌(Dothiorella gregaria Sacc.)
短句来源
     Adjustment and Optimization Analysis of Poplar Trees Industrial Structure in Jiangsu Province
     江苏杨树产业结构的调整与优化分析
短句来源
     A new record species, Metaphycus nadius (Walker), is described and recorded, which reared from Quadraspidiotus gigas(Theim et Gernek) on poplar trees in Hailun County, Heilongjiang Province.
     记述了采自黑龙江省海伦县伦河镇杨树上杨圆蚧Quadraspidiotus gigas(Theim et Gernek)的寄生蜂———杨圆蚧阔柄跳小蜂Metaphycus nadius(Walker)。
短句来源
     FUSARIUM PROLIFERATUM (MATSUSHIMA) NIRENBERG ——A PATHOGEN CAUSING WETWOOD IN POPLAR TREES
     引起杨树湿心材的一种病原真菌——Fusarium proliferatum(Matsushima)Nirenberg
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  poplar
Effects of Cutting Density on Growth, Yield and Quality of Poplar Clone Seedlings
      
In order to identify the optimum cutting density for producing the highest number of plantable seedlings of poplar clones, a split-plot randomized block design was used to establish four cutting densities in plots.
      
Results indicated that the leaf area, stem and leaf biomass, and caliper of seedlings of all four poplar clones increased with the decrease in cutting density.
      
According to the seedling quality and the number of plantable seedlings produced, the suggested cutting density for these four poplar clones was 50,000 stems/hm2.
      
Nutrient Dynamics of Fine Roots in the Mixed Plantation of Poplar and Black Locust
      
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  poplars
Genotypic Differences in Antioxidative Stress and Salt Tolerance of Three Poplars Under Salt Stress
      
Molecular detection and drought resistance analysis of SacB-transgenic poplars (Populus alba × P.
      
The propagation of drought-resistant transgenic poplars is one of the more effective ways to improve the ecological state of arid regions.
      
Results revealed that the expression of SacB gene in transgenic poplars enhanced its resistance to water stress.
      
Transgenic poplars with decreased lignin and increased cellulose contents, but otherwise normal growth and development, have been produced via genetic transformation.
      
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  poplar tree
With the completion of the poplar tree genome database, Populus species have become one of the most useful model systems for the study of woody plant biology.
      
In Golgi preparations, slab-like (or poplar tree-like) axon terminal arbourisations of both magnocellular and parvocellular isthmic nuclei neurons were found extending to the tectal surface, with similar branching patterns, but different lengths.
      
Fluorescences of poplar tree leaves growing naturally at a distance of 60 m from the lidar were successfully detected as two spectral images at wavelengths of 685 nm and 740 nm.
      
The intensity ratio of the images reflected the status of the poplar tree in the process of senescence so well that it was possible to assess the living status of the tree as a numerical value.
      
Growth Parameters and Heavy Metal Accumulation in Poplar Tree Cultures (Populus euramericana) Utilizing Water and Sludge from a
      
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  poplar trees
(3) The increased return amount of N in mixed fine roots could improve the N nutrient condition of poplar trees.
      
pachypyga was also attracted preferentially to aspen poplar trees containing FTC larvae, compared to balsam poplar trees with host larvae.
      
Studies on adaptability ofPopulus bolleana and other Poplar trees in northwest Shanxi Province
      
Based on the test results in arid and cold area of the northwest Shanxi, the hybrid poplar trees takingPopulus cathaysna as their female parent could be selected for afforestation, such asP.
      
poplnea on ten poplar strains were investigated, and the main trophic component of branches of these poplar trees were measured and analyzed in April 2001.
      
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