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   genetics and variation 的翻译结果: 查询用时:0.184秒
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genetics and variation     
相关语句
  遗传与变异
     Study on the Genetics and Variation of the Clones Fruit Bearing in Chinese Fir Seed Orchard
     杉木种子园无性系结实遗传与变异研究
短句来源
     Genetics and Variation of Gene 3A of Foot-and-Mouth Disease Virus by Sequential Passages in Mice
     口蹄疫病毒在小鼠连续传代中3A基因的遗传与变异
短句来源
  遗传和变异
     GENETICS AND VARIATION OF THE CHARACTERS IN PLANTYCLADUS ORIENTALIS CV. NEMPEROURESCENS AND SIEBOLDU
     洒金柏和千头柏性状的遗传和变异
短句来源
  遗传及变异的
     Study on Genetics and Variation of Semisibling DescendantⅠandⅡForest from 6-year Cunninghamia lanceolata Seed Orchard
     6年生杉木种子园半同胞子_1代与子_2代林遗传及变异的研究
短句来源
  遗传变异
     The Genetics and Variation of Wood Density in Chinese Fir Clones and Its Interaction to the Growth Characters
     杉木无性系木材密度遗传变异及其与生长性状的相关性
短句来源
     Six strains of Serotype 0 FMD viruses (P35~. P53~. P57~ P6l~ P70~P105) were cloned by routine techniques of molecularbiology, sequenced by automatic sequencing, compared and analyzedbyGenedoc software to study their genetics and variation accordingtothe changes in the nucleotide sequence of gene 3A and to providethebasic materials for further research in the aspects of virusvirulenceand host range as well as the other functions of gene 3A.
     选取模拟OMII六个代次P35、P53、P57、P61、P70和P105的毒株,通过分子生物学技术,对其进行克隆和序列测定,利用Genedoc分析软件进行序列比较,观察不同代次的3AB基因序列变化,以了解其遗传变异规律,为进一步研究3A基因在病毒毒力、宿主嗜性方面的作用打下基础。
短句来源
     The genetics and variation in Actinidia were studied by analysis of genomic DNAsextracted by the improved CTAB method from 10 species including 42 biotypes.
     本文以猕猴桃 10 个种、34 个栽培品种共 42 个生物型的叶片为试验材料,采用改良 CTAB 法提取基因组 DNA,对猕猴桃各生物型遗传变异进行研究。
短句来源
     The genetics and variation of wood density and its interaction to the growth character of three 7~10 year-old clone test plantations of Cunninghamia lanceolata were studied in Guangdong Province. The results show as follows. There are genuine genetic differences in wood density among the studied clones and 50 to 60% of the contributing factors to wood density are from the heredity elements.
     对3块7~10年生杉木无性系测定林的木材密度遗传变异情况及其与生长性状的相关性进行了研究,结果表明:无性系间木材密度存在真实的遗传差异,为无性系木材密度做出贡献的各因素中,有50%~60%来自于遗传因素;
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      genetics and variation
    Human skin pigmentation, its genetics and variation
          


    Abstract This paper clarifies the world experience in breeding of disease-resistant treespecies. The genetics and variation of hosts and pathogene as the two opposites of disease-re-sistant breeding are discussed in the following aspects: disease-resistant variation of similarspecies from the same genus, of different clones, different families, different provenancesfrom the same species; the changes in physiologieal races, existing widely in pathogens,caused by genetic variation of hosts; the...

    Abstract This paper clarifies the world experience in breeding of disease-resistant treespecies. The genetics and variation of hosts and pathogene as the two opposites of disease-re-sistant breeding are discussed in the following aspects: disease-resistant variation of similarspecies from the same genus, of different clones, different families, different provenancesfrom the same species; the changes in physiologieal races, existing widely in pathogens,caused by genetic variation of hosts; the difference between disease resistant individuals anddisease-sensitive individuals, their morphological and anatomical features, physiological andbio-chemical features, and changes caused by the attack of pathogens. The author deemes itan effective way of breeding to select the high disease resistant individuals from existing for-est stands, and the central issue of breeding to work out rapid, efficient and mass processingmethods for selected individuals. The author suggests to strengthen the research on breedingof disease-resistant tree species, to arrange the research as a basic research project of nationalsignificance. The project should be carried out in a way of multi-disciplinary cooperation, theselection method should be combined with cross breeding, the conventional methods shouldbe put first, and some manpower should be arranged to study the transgenosis techniques.

    文章概述了近40年来国际林木抗病育种研究的经验。突出地介绍了作为抗病性育种主休的寄主和病原菌两个对立体系的遗传和变异。认为从现有林分中选择高抗性个体是当前行之有效的抗病育种途径,而制定快速、有效和大批量人工接种鉴定入选个体抗性的方法又是抗病育种的中心。建议强化我国林木抗病育种的研究,以为发展集约人工林服务。

    Azuki bean, originated from China, is one of the most widely cultivated food legumes in China. However, the research on azuki bean started very late and developed very slowly The breeding efficiency and level were greatly lagged behind other crops. This paper reviewed the status of genetics and variation research of main agronomic traits on azuki bean, put forward the main research contents on germplasm research and the preliminary selective plan of breeding, which will be helpful for azukibean breeding...

    Azuki bean, originated from China, is one of the most widely cultivated food legumes in China. However, the research on azuki bean started very late and developed very slowly The breeding efficiency and level were greatly lagged behind other crops. This paper reviewed the status of genetics and variation research of main agronomic traits on azuki bean, put forward the main research contents on germplasm research and the preliminary selective plan of breeding, which will be helpful for azukibean breeding in the future.

    小豆起源于我国,是我国栽培范围最广泛的主要食用豆类之一,但与其它作物相比,我国的小豆研究起步较晚,进展缓慢,育种效率及水平存在一定差距。本文综述了小豆主要农艺性状(包括生育期、形态性状、产量性状、品质性状等)遗传变异的研究概况,提出了今后小豆资源研究的主要内容及育种中初步的选择方案,旨在对我国的小豆育种工作有一定的参考意义。

    The genetics and variation of wood density and its interaction to the growth character of three 7~10 year-old clone test plantations of Cunninghamia lanceolata were studied in Guangdong Province. The results show as follows. There are genuine genetic differences in wood density among the studied clones and 50 to 60% of the contributing factors to wood density are from the heredity elements. The repeating ability of wood density in the clones is from 0.829 to 0.911 and the genetic variation coefficient...

    The genetics and variation of wood density and its interaction to the growth character of three 7~10 year-old clone test plantations of Cunninghamia lanceolata were studied in Guangdong Province. The results show as follows. There are genuine genetic differences in wood density among the studied clones and 50 to 60% of the contributing factors to wood density are from the heredity elements. The repeating ability of wood density in the clones is from 0.829 to 0.911 and the genetic variation coefficient of wood density is from 4.86% to 6.98%. And in each test plantation, the wood density ratio between the maximum clone and the minimum clone is from 1.25 to 1.47. All these indicate that the repeating ability is rather high; that the genetic variation and the differences among the clones are small compared to the growth character; and that the correlations of wood density to height, D.B.H, volume phenotype, genetics and environment are all negative. Furthermore, there are 80% of the clones that have significant negative correlations described above. This shows that it is quite difficult to select excellent clones according to both growth and wood quality. Therefore, it has been suggested in this discussion that in order to select excellent clones of Cunninghamia lanceolata, the growth character should be considered the first factor and the wood quality the second.

     对3块7~10年生杉木无性系测定林的木材密度遗传变异情况及其与生长性状的相关性进行了研究,结果表明:无性系间木材密度存在真实的遗传差异,为无性系木材密度做出贡献的各因素中,有50%~60%来自于遗传因素;无性系木材密度的重复力介于0.829~0.911之间,遗传变异系数介于4.86%~6.98%之间,木材密度最大值与最小值之比介于1.25~1.47之间,无性系重复力较高,相对生长性状而言遗传变异及无性系间的差异较小;木材密度与树高、胸径、材积的表型、遗传和环境的相关性均呈现负相关,有近80%的木材其密度与生长性状的表型、遗传的相关性达到显著或极显著负相关水平,这表明选择生长性状与材质兼优的无性系相当困难.讨论提出了杉木优良无性系选择分两步进行的建议.

     
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