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育种
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  breeding
    Evaluation of Populus Nigra L.Gene Resources for Breeding
    欧洲黑杨育种基因资源评价研究
短句来源
    EVALUATION OF EFFECTIVENESS IN SELECTIVE BREEDING OF CRYPTOMERIA SPECIES
    柳杉选择育种效果评价
短句来源
    THE APPLICATION OF ISOZYME ANALYSIS ON RESEARCH OF GENETIC BREEDING IN FOREST TREES
    同工酶在林木遗传育种中的应用
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    VEGETATIVE PROPAGATION AND CLONAL BREEDING OF FOREST TREES
    树木的无性繁殖与无性系育种
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    Development of Industrial Plantations and Tree Breeding for Wood Improvement
    工业人工林发展与材性育种
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  breed
    The research on high frequency transformation system and gene(HVAl) transformation of polar 84 K not only supplied a new experimental system for polar 84K in many foundational theory studies including physiologic development, cell differentiation and morphogenesis etc, but also laid a foundation for the improving breed, acceleration of breeding and rapid propagation o
    84K杨叶片良好的植株再生系统的建立以及在此基础上开展的HVAI基因转化84K杨的研究不仅可为进一步研究84K杨的发育生理、细胞分化以及形态建成等许多基础理论问题提供新的实验系统,而且为利用现代生物技术改良杨树品种、加速育种进程、促进优良种苗的快速繁殖与利用等奠定了基础。
短句来源
    The project is the application and practice of the hereditary breed theory and method of modern timber.
    本设计是对现代林木遗传育种理论与方法的实践和应用。
短句来源
    We set up variation regulation model for wood ring density based on neural network which provided the theory basis for further analyzing some questions about physics mechanical properties of timbers, for making effective measure to breed fast-growing, high quality timber and for forecasting material quality in early stage.
    基于神经网络木材年轮密度变异规律模型的建立,为进一步深入分析和研究木材年轮密度的变异规律,从而分析其他木材物理力学性质的一些问题,为实现林木定向培育和速生优质,制定科学育种经营措施以及材质的早期预测提供了理论基础。
短句来源
  breeding achievements
    Historical Review of Populus Breeding Achievements of Shaanxi Province and Its Future Breeding Strategy
    陕西杨树育种历史及展望
短句来源
    This paper briefly introduces the course of forest breeding, executing institutes, main breeding items (new varieties breeding for production, genetic resources conservation and overseas technical cooperation), breeding achievements and future expectation for forest breeding in Japan.
    介绍了日本的林木育种简要历程、林木育种机构、林木育种事业的三大内容 (新品种培育、森林遗传资源保存和海外技术合作 )、育种成果及对未来育种的期待
短句来源
    Fully review the Populus breeding achievements of Shaanxi province in the last 50 years, point out the shortcoming of Populus breeding so far of Shaanxi province and state the future Populus breeding strategy.
    回顾了近50年来,陕西杨树育种发展历史及取得的成就,提出了目前陕西杨树育种研究存在的问题,展望了未来陕西杨树育种研究工作重点。
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  “育种”译为未确定词的双语例句
    GENE RESOURCES OF JUGLANS AND GENETIC IMPROVEMENT OF JUGLANS REGIA IN CHINA
    我国胡桃属(Juglans L. )种质资源与核桃(Juglans regia L. )育种
短句来源
    Studies on Chromosome Doubling and Triploid Breedingof White Poplar ( Ⅲ )──The Observation of Some Morphological Charactersin Triploids of White Poplar
    白杨染色体加倍技术研究及三倍体育种(Ⅲ)──加倍体某些形态特征的观察
短句来源
    Present Situation and Prospect to In Situ Hybridization in Forest Genetics and Tree-Breeding
    原位杂交在林木遗传育种上的应用现状和前景
短句来源
    The Challenges to Forestry Biotechnology and Tree Breedingin the 21~(st) Century
    迎接21世纪现代林木生物技术育种的挑战
短句来源
    A Review on Application of Molecular Markers in Rubber Tree
    分子标记在橡胶树遗传育种中的应用
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  breeding
Accurate identification of varieties (clones) and knowledge of their genetic relationships are essential for poplar breeding and variety management.
      
It was observed that the winter range is smaller than that in the breeding season.
      
Due to the limitation in distribution and the importance as breeding material for germplasm storage, it has been considered as first class among the national protected rare plants.
      
For this reason, the present study is significant in probing plant flora, origin and evolution of Triticeae, and crop breeding.
      
Breeding and application of Jiafuzhan, a new elite early indica rice cultivar in China
      
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  breed
Cloning, high-level expression, and characterization of the somatotropin (ST) gene of an indigenous Nili-Ravi breed of water buffalo Bubalus bubalis (BbST) are described.
      
Spermatozoa of a bull of the Britanofrizskaya breed were used in the experiments.
      
Gorbatov Red breed was monomorphic at the microsatellite locus with the only allele 164 bp in length.
      
In Gorbatov Red breed of dairy type with good beef qualities and low milk-fat yield, lower level of heterozygosity for PRLgene was demonstrated compared to Ayrshire and Black Pied breeds that have high milk-fat yield.
      
Structural Organization of Gene Pool by Immunogenetic Markers in the Ukrainskaya Stepnaya Belaya Breed of Pigs
      
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  breeding achievements
Both varieties are entered in the State Register of Breeding Achievements of the Russian Federation.
      
Valuable breeding achievements have been made to develop wheat varieties with enhanced resistance to the disease, and mapping of race-specific resistance genes has been reported.
      


Our study on the half-sib progeny test started in 1972 and was completed in 1977-The results of this study show that the height growth in the nursery phase of the 45 families was very significant at the one percent level.

半同胞子代测定的研究于1972年开始,在1977年完成。从这些研究的结果看出,在45个家系之间苗期高生长量在1%平准上是非常显著的。 遗传型×环境互作(GEI)表现的经验值,可借助于互变量的分析来计算。家系×年分(7.39%)、家系×地点(7.36%)和家系×地点×年分(19.91%)的高的方差分量百分率,表现了杉木的GEI是十分显著的。 在杉木育种程序中,应用半同胞子代测验,检验GEI类型是完全可能的。 根据遗传稳定性研究的结果,该种子园内这些家系可分为四种类型:“速生—稳定型”、“中等—稳定”,“变化的”和慢生型”。

Identification of superior provenances of Chinese fir (Cunninghamia Lanceolata (Lamb) Hook) and verification of their genetic superiority are most important in the work of genetic improvement of this species. Our study on this subject started in 1974, and was completed in 1979.

杉木优良产地的鉴定及其遗传优势的检验,是杉木树种遗传改良的重要组成部分。这项试验于1974年开始,在1979年结束。 遗传优势研究的初步结果证实,十一个产地四年生的表型差异,在1%(或5%)的平准上存在显著性。 在产地平准上,产地之间的变异通常有些合适的类型,产地与地点的适应性的生态群,有可能形成产地变迁模式的基础。根据这些试验的结果,在杉木自然分布区域之内,可区划成三个育种区:“中心”、“一般”和“边缘”。 从方差分析的结果看出,在中心区的亚群体比之在边缘区的亚群体,在遗传上具有更大的稳定性。杉木产地变迁模式的发展,对于当地(乡土)种是完全适合的。因此,用当地种的“优树”(加号树)建立种子园是适宜的。

The clonal seed orchard covers an area of 3.0 hectares with about 46 clones which were grafted with mature scions in 1966. The seedling seed orchard covers an area of 0.6 hectares with about 30 open-pollinated families which were planted in 1967. Both are located in Yangkou Forest Form, Fujian Province. A ccording to the result of progeny test, under similar site conditions and uniform managements, the offsprings of superior mother trees yielded 14 to 39 percent more and the offsprings in the clonal seed orchard...

The clonal seed orchard covers an area of 3.0 hectares with about 46 clones which were grafted with mature scions in 1966. The seedling seed orchard covers an area of 0.6 hectares with about 30 open-pollinated families which were planted in 1967. Both are located in Yangkou Forest Form, Fujian Province. A ccording to the result of progeny test, under similar site conditions and uniform managements, the offsprings of superior mother trees yielded 14 to 39 percent more and the offsprings in the clonal seed orchard yielded 33 to 72 percent more in volume growth as compared with the common check trees at the age of 7. However, the offsprings of the half-sib progeny tested in four different sites yielded only 6 to 22 percent more in height growth as compared with the common check trees.

杉木无性系种子园的面积3.0公顷,包括46个无性系,于1966年进行嫁接。实生苗种子园的面积0.6公顷,包括30个自由授粉的家系,于1967年栽植。 根据子代测定的结果,优良母树的后代,在相同立地条件和一致的经营管理下,在7年生时,材积生长比一般对照大“14—39%;种子园的后代则比对照大33—74%。然而,当半同胞子代在四个不同地点测定时,其树高生长比对照大6—22%。 7—13年生的杉木树高、胸径和材积的广义遗传力是按家系和单株估算的。单株树的树高和材积遗传力估值是0.2,而直径的遗传力估值为0.3。家系树高、胸径和材积遗传力估值是0.4。2—4年生时,全同胞家系树高狭义遗传力估值是0.3。 期望遗传效益是在各种不同选择强度下计算的(P_1=0.01;P_2=0.1,0.2和0.3;P_3=0.01,0.02和0.05)。对第一代无性系种子园在材积生产和其它生长性状方面的遗传效益进行预测。杉木各生长性状的遗传效益的估值如下:树高6.54一6.7.%,胸径19.12—19.68%,材积27.38—23.09%。然而,从第一代实生苗种子园在胸径生长方面预测的遗传效益值接近于20—26%。 第二代亲木的选择是在...

杉木无性系种子园的面积3.0公顷,包括46个无性系,于1966年进行嫁接。实生苗种子园的面积0.6公顷,包括30个自由授粉的家系,于1967年栽植。 根据子代测定的结果,优良母树的后代,在相同立地条件和一致的经营管理下,在7年生时,材积生长比一般对照大“14—39%;种子园的后代则比对照大33—74%。然而,当半同胞子代在四个不同地点测定时,其树高生长比对照大6—22%。 7—13年生的杉木树高、胸径和材积的广义遗传力是按家系和单株估算的。单株树的树高和材积遗传力估值是0.2,而直径的遗传力估值为0.3。家系树高、胸径和材积遗传力估值是0.4。2—4年生时,全同胞家系树高狭义遗传力估值是0.3。 期望遗传效益是在各种不同选择强度下计算的(P_1=0.01;P_2=0.1,0.2和0.3;P_3=0.01,0.02和0.05)。对第一代无性系种子园在材积生产和其它生长性状方面的遗传效益进行预测。杉木各生长性状的遗传效益的估值如下:树高6.54一6.7.%,胸径19.12—19.68%,材积27.38—23.09%。然而,从第一代实生苗种子园在胸径生长方面预测的遗传效益值接近于20—26%。 第二代亲木的选择是在于代测定的材料中进行的。当假定把整个杉木育种方案的成木与期待增加的收益结合起来考虑时,其所得到的净收入值,证实了子代测定的实用价值。研究证明,每?

 
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