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elite     
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  优秀
     THE QUANTITATIVE DETEMINATION OF SERUM IMMUNOGLOBULINS IN ELITE RUNNERS
     优秀径赛运动员血清中免疫球蛋白的定量测定
短句来源
     An Echocardiographic Study of the Left Ventricular Diastolic Functions in Elite Distance Runners
     我国优秀男子长跑、马拉松运动员左室舒张功能的超声心动图研究
短句来源
     A Comprehensive Study on Scientific Training of Elite Young Players
     优秀青少年运动员科学训练综合研究
短句来源
     Kinematic analysis of the throwing technique of the elite fenale discus throwers in our country
     对我国优秀女子铁饼运动员投掷技术的运动学分析
短句来源
     Kinematic Analysis on Technical Actions of Elite Man Javelin Throwers in the 11th Asian Games
     第11届亚运会男子标枪优秀选手技术动作的运动学分析
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  精英
     “Capital” Accumulation Strategies of Rural Community Elite at the End of 20th Century
     20世纪末农村社区精英的“资本”积累策略
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     The Institute of Geology-the Successful Attempt of Elite Education at the Beginning of 20 Century in China
     地质研究所—中国20世纪初叶精英教育的成功尝试
短句来源
     4. Clash between serious culture (mainstream culture, elite culture) and popular culture.
     4 .严肃文化 (主流文化、精英文化 )与大众文化的冲突。
短句来源
     A Collective Approach on V815 by the Elite of Business Pioneers of Zhongguancun
     中关村创业精英集体现身V815
短句来源
     Marxist's thought on Form of Government carries on macro-politeia view in the Western political tradition, which practice wandered between the plebeian politeia and the elite's.
     马克思主义政体思想继承了西方传统中既强调政治制度 ,又强调社会结构的大政体观 ,其政体实践徘徊于巴黎公社式平民政体与苏联式精英政体之间。
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  优良
     (2) For character of yield,852-77A,Hou 36A and 9522A were elite CMS lines(Table 5); 161-10,3402,HP121 were excellent restorers(Table 6); 9522A/161-10,9522A/C166、852-77A/3402 were superior combinations.
     在产量性状上配合力较优的不育系有852-77A、后36A和9522A,恢复系有161-10、3402、HP121,优良组合有9522A/161-10、9522A/C166、852-77A/3402。
短句来源
     The SCA values of ear kernel weight and expansion fold between BP20,BP21 and N03, BP02 and F2, BP11 and N16 were all significantly positive and these selected lines could be used to make elite crosses with those lines in the same groups as N03, F_2, N16 respectively.
     BP20,BP21与N03,BP02与F2,BP11与N16穗粒重和膨化倍数的SCA效应均为较大极显著正值,应进一步利用这些选系分别与其父本的同类群近缘系进一步测配,从中筛选优良组合;
短句来源
     Selection of Elite Parent Material Carrying 1B/1R Translocation and Its Application in Wheat
     小麦优良亲本材料1B/1R易位系的研究
短句来源
     Functions of bacterial blight resistance gene Xa21 in hybrid rice were studied by using a elite Indica rice restorer line BR527,harboring a transgene of Xa21[STBZ],as a resistance gene donor,and hybridized it with the sterile line J23A,G46A,D62A and D200A,respectively.
     以转Xa 21基因的水稻优良恢复系BR527为抗白叶枯病基因供体,分别与不育系金23A、G46A、D62A、D200A进行组配,研究该基因在改良杂交水稻白叶枯病抗性方面的作用。
短句来源
     New elite sugarcane clone Yunzhe 92-19
     优良甘蔗新品系云蔗92-19
短句来源
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  精华
     Idioms are the elite of carious language, influenced by the cultural factors .
     习语是语言文化中的精华,而且受文化因素的影响。
短句来源
     Total Quality Management and ISO9000 Standards are the elite of quality management in modern enterprises, whose ideas, principles and methods have important reference value to colleages and universities .
     全面质量管理和ISO9000标准是现代企业质量管理的精华,其理念、思想和方法对高校具有重要的借鉴意义。
短句来源
     On assimilating traditional elite for Chinese modern architecture
     中国现代建筑如何吸取传统精华
短句来源
     Absorb Elite of Traditional Virtue Rule, Construct Modern Civilization
     吸纳传统德治思想精华,建设现代文明
短句来源
     The youth are the elite of our country, the treasure of our nation, the future of the world and the hope of the society.
     青年是国家之精华 ,民族之至宝 ,世界之未来 ,社会之希望。
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  elite
AFLP fingerprinting of elite varieties (clones) from the genus Populus
      
In this study, 21 elite poplar varieties of Tacamahaca and Aigeiros in China were fingerprinted using amplified fragment length polymorphism (AFLP) markers.
      
Breeding and application of Jiafuzhan, a new elite early indica rice cultivar in China
      
The successes of breeding Jiafuzhan is a solution to the existing perennial problems in the rice industry, such as poor grain quality of big-grain rice and early indica rice, low productivity, and poor blast resistance of elite rice.
      
It is demonstrated that some "elite" rings characterized by integral quantum numbers are long-living, while "lethal" or unstable rings (antirings) are associated with half-integer quantum numbers.
      
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The Breeding work of Octoploid Triticale since 1957 is summarized as follows:1. The use of crossable gene. The genetic analysis of the crossability between common wheat and rye has shown that s, ss, SA, SN and SQ belong to a multiple allelic series of a single locus. The degree of crossability of these genes can be arranged in such an order, namely, s > ss > SA > SN > SQ. According to the degree of dominance, the order should be reversed as: SQ > SN > ss > SA > s. These findings were properly used in the routine...

The Breeding work of Octoploid Triticale since 1957 is summarized as follows:1. The use of crossable gene. The genetic analysis of the crossability between common wheat and rye has shown that s, ss, SA, SN and SQ belong to a multiple allelic series of a single locus. The degree of crossability of these genes can be arranged in such an order, namely, s > ss > SA > SN > SQ. According to the degree of dominance, the order should be reversed as: SQ > SN > ss > SA > s. These findings were properly used in the routine work of crosses between wheat and rye.2. Chromosome doubling. Before treatment the wheat-rye hybrid seedlings should be slightly wounded on crown part by a sharp razor blade. Then the hybrid seedlings are exposed in 0.04-0.05% aqueous solution of colchicine for 4 days in room temperature not over 15℃. More than 90% of the treated seedlings could be recovered in greenhouse below 10℃. Among the recovered seedlings, about 40.8% of the sterile F1 hybrid plants would be turned to be partial fertile and various amount of seeds could be obtained from these successful plants. By this procedure, 4,700 primary Triticale strains have been created. In 1961, a new polyploidizing agent was discovered. The name of the agent is Fumiron, or Phenyl mercury-p-toluene sulfonanilide which is a fungicide and has comparable cfficiency in chromosome doubling as colchicine does.3. Fertility and seed plumpness. It was suggested that recombination of genes by hybridization and molding the segregation generations by heavy selection pressure could be the effective measures for the improvement of the fertility and seed plumpness of the octoploid Triticale strains. About two thousand of cross-combinations have been made with various parental stocks which were mostly selected from the primary Triticale strains, and in recent years, hybrid strains and elite plants in segregation generation were used in crosses more frequently than the primary types. The hybrid strains thus developed with normal fertility and acceptible seed plumpness were released to different localities with various natural conditions for yield tests.4. Regional tests. The data collected from regional tests have shown a tendency that the Triticale hybrid strains at present state might be successful in those regions where the yield of common wheat is usually very low and unstable due to severe natural conditions. For example, 10 Triticale strains were tested for yield performance with one rye and two common wheat varieties as checks in 1972-1973 growing season in Weining, a mountainous region of Kweiehow with altitude between 2-3 thousand meters. Eight out of ten Triticale strains have higher yields than both rye and wheat varieties. The best strain, Triticale No. 2 has a yield about 20% higher than that of rye, and 24% and 61% higher than the two varieties of common wheat Ahpo and No. 778 respectively. However, it, should not thus be concluded that the octoploid Tri-ticale is especially suitable for the marginal habitats of common wheat. It is only apparently seeming so at the present state of the Triticale strains which were developed from selection solely directed to the improvement of fertility and seed plumpness without much consideration for other characteristics of agricultural importance. Now, only the hardiness from rye and good seed quality from common wheat generally incoporated in the amphiploid have shown their favourable effect in the marginal regions of these two crops. This might be considered therefore that it is merely a preliminary stage of the Triticale program.

从1957年以来的八倍体小黑麦育种工作的主要结果总结如下: 1.可杂交基因的应用 小麦和黑麦之间的可杂交遗传分析表明s,s~S,s~A,s~N和s~Q是属于一个基因座的复等位基因。根据可杂交的程度,这些基因可以排成如下的次序,即s>s~S>s~A>s~N>s~Q。根据显性的程度,则其次序就要倒过来成为:s~Q>S~N>s~S>s~A>s。这个发现已被适当地应用于小麦与黑麦的日常杂交工作中。 2.染色体数加倍 小麦-黑麦杂种分蘖苗于处理前在基部用刀片切一浅伤口,而后浸在0.04—0.05%的秋水仙精溶液中4天,室温保持在15℃以下。在10℃以下的温室中,90%以上的处理苗能恢复生长。恢复苗中约有40.8%的F_1不育杂种植株能转变成部分可育的,并以这些成功株上将获得数目不等的种子。用这个方法,曾经制造了4,700个小黑麦原始品系。在1961年,发现了一个新的多倍体诱变剂。药品的名字是富民隆,或称对甲苯磺硫苯胺基苯汞,它是一个杀菌剂,加倍染色体数的效果和秋水仙精一样。 3.结实率和种子饱满度 通过杂交的基因重组和加重分离世代的选择压力是改进八倍体小黑麦的结实率和种子饱满度的有效方法。从小黑麦原始品系中选用各种亲本...

从1957年以来的八倍体小黑麦育种工作的主要结果总结如下: 1.可杂交基因的应用 小麦和黑麦之间的可杂交遗传分析表明s,s~S,s~A,s~N和s~Q是属于一个基因座的复等位基因。根据可杂交的程度,这些基因可以排成如下的次序,即s>s~S>s~A>s~N>s~Q。根据显性的程度,则其次序就要倒过来成为:s~Q>S~N>s~S>s~A>s。这个发现已被适当地应用于小麦与黑麦的日常杂交工作中。 2.染色体数加倍 小麦-黑麦杂种分蘖苗于处理前在基部用刀片切一浅伤口,而后浸在0.04—0.05%的秋水仙精溶液中4天,室温保持在15℃以下。在10℃以下的温室中,90%以上的处理苗能恢复生长。恢复苗中约有40.8%的F_1不育杂种植株能转变成部分可育的,并以这些成功株上将获得数目不等的种子。用这个方法,曾经制造了4,700个小黑麦原始品系。在1961年,发现了一个新的多倍体诱变剂。药品的名字是富民隆,或称对甲苯磺硫苯胺基苯汞,它是一个杀菌剂,加倍染色体数的效果和秋水仙精一样。 3.结实率和种子饱满度 通过杂交的基因重组和加重分离世代的选择压力是改进八倍体小黑麦的结实率和种子饱满度的有效方法。从小黑麦原始品系中选用各种亲本大约已经做了两千个杂交组合,近年来更多的是用杂种选系和分离世代中好的植株来进行杂交。由此而选育出来的,结实率正常,

Different grades of seeds of dipleid and tetraploid sugarbeet do not differ significantly in sugar cantent and beet yield. This indicates that the examin ation of sugar' content in elite mother beets is not neccessary.

甜菜二倍体与四倍体品种异级种子在根产量、含糖率等方面无显著差异。由此说明甜菜原种母根免于检糖是可行的。

The maintenance line and the restorer line of the“three lines”in thehybrid rice were self-pollinated population.Their genotype within a populationwas homozygous and their variation was stable as a result of self-pollinationfor a long period of time.The male sterile line was backcrossed with itsmaintenance line for propagation.Thus,they formed a backcross population.Continuous backcross could maintain the stability of the male sterile line whichwas controlled by cytoplasmic-nuclear interaction.The male sterile...

The maintenance line and the restorer line of the“three lines”in thehybrid rice were self-pollinated population.Their genotype within a populationwas homozygous and their variation was stable as a result of self-pollinationfor a long period of time.The male sterile line was backcrossed with itsmaintenance line for propagation.Thus,they formed a backcross population.Continuous backcross could maintain the stability of the male sterile line whichwas controlled by cytoplasmic-nuclear interaction.The male sterile line wascrossed at random with the restorer line,and then made up a random matingpopulation to produce the hybrid rice.Ultimately,it would cause a certaincushioning effect on mutation,random drift and selection effect.There was ahigh level of potential stability in the hybrid rice and its three lines.The deterioration of hybrid rice is mainly due to mechanical mixture andbiological contamination.Tomaintain its purity and prevent heterogeneity shouldbe the key link for seed amelioration.The“three-line-seven-nursery-method”system on the basis of improved bluk selection and the appraisal of restorationto fertility has achieved satisfying results in the production of elites

杂交稻“三系”中的保持系和恢复系是自交群体,长期自交促使基因型纯合和遗传的稳定;不育系繁殖时和保持系组成回交群体,连续回交可以维持由核质共同控制的雄性不育系的长期稳定;在制种过程中,不育系和恢复系组成异交群体,增强了对突变、漂变或选择影响的缓冲能力。这些都是杂交稻高度稳定的内在基础。杂交稻普遍混杂退化的问題是机械混杂和生物学混杂所造成的。杂交稻良种繁育的中心环节是做好防杂保纯工作。以改良混合选择和不育系育性鉴定为主要手段的“三系七圃法”原种生产技术,强调维持“三系”综合性状的典型性为选择的主要目标,对数量性状采用众数选择法或平均数选择法.四年来,经过四百万亩大面积生产实践检验,“三系七圃法”周期短、投资少、种子多、质量好,广泛受到各地的欢迎.

 
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