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quality
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  品质
    Study on Simulation and Control Mechanism of Rice Drying Quality
    水稻干燥品质的模拟和控制机理研究
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    Study on the Cause for Quality Diversity of Wheats with Same HMW-GS and the Access of Improving Wheat Quality
    相同HMW-GS组分小麦品质差异原因及提高品质方法的研究
短句来源
    Studies on Genetic System and Heterosis Improvement of Major Agronomic and Quality Traits in Rapeseed (Brassica Napus L.)
    甘蓝型油菜主要农艺品质性状遗传体系和杂种优势改良研究
短句来源
    Study on the Effect of Nitrogen Dose on Quality Changing Pattern and Quality Stability of Wheat Grown in Heilongjiang Province
    氮肥施用水平与黑龙江省春小麦品质变化规律关系及品质稳定性的研究
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    Genetic Analysis and QTL Mapping of Quality Traits in Common Wheat
    普通小麦品质性状遗传与QTL分析
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  优质
    Study on Biochemical and Genetic Basis of Quality Breeding in Common Wheat (Triticum Aestivum L.) in Southwest China
    中国西南麦区普通小麦(Triticum Aestivum L.)优质育种的生化遗传基础研究
短句来源
    VIEWS ON BREEDING FOR HIGH-YIELDING AND FINE QUALITY COTTON VARIETIES IN OUR COUNTRY
    对我国棉花高产优质育种问题的几点看法
短句来源
    CULTIVATION OF BIG MUNG BEAN(PHASEOLUS AURENS VAR.GIGANTICA)AS HIGH QUALITY GREEN ROUGHAGE FOR ANIMAL FEED
    优质高产青刈豆科饲料—大绿豆(Phaseolus aurens var·gigantica)饲用青刈栽培试验
短句来源
    A NEW RICE VARIETY"MA BA WAN ZHAN NO. 1"WITH HIGH YIELD AND GOOD QUALITY
    高产优质新品种——马坝晚占1号的选育
短句来源
    HIGH QUALITY FORAGE SETARIA LUTESCENS GROWN WILD ON THE MOUNTAINOUS RED EARTH IN SOUTH CHINA
    华南红壤山区野生高产优质牧草——金色狗尾草Setaria lutescens(Weig.)F.T.Hubb的研究
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  品质的
    Study on Simulation and Control Mechanism of Rice Drying Quality
    水稻干燥品质的模拟和控制机理研究
短句来源
    The Effects of Starch-synthesizing Genes on Rice Quality and Analysis of Starch-branching Genes Sbe1 and Sbe3 in Rice(Oryza Sativa L.)
    稻米淀粉合成相关基因对品质的影响及分支酶基因Sbe1、Sbe3克隆与分析
短句来源
    Relationship of Rice Quality and Dynamics of Enzyme Activities during the Denucleation Development of Rice Endosperm Cell PCD
    水稻胚乳细胞PCD中的去核化及酶活性动态与稻米品质的关系
短句来源
    Study on the Relationship between Wheat Quality and Storage Protein
    贮藏蛋白与小麦品质的关系研究
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    Effect of Phosphorus and Potassium Nutrition on Yield and Quality of Alfalfa(Medicago Sativa L.)and Related Mechanisms
    磷钾营养对紫花苜蓿(Medicago Sativa L.)产量和品质的影响及相关机理研究
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  “quality”译为未确定词的双语例句
    Marker-Assisted Selection of HMW-GS Dx5(+Dy10) Gene and Its Effect on Wheat Quality Breeding
    小麦谷蛋白亚基基因Dx5(+Dy10)的分子选择及效果研究
短句来源
    Chemical Control on Nitrogen Metabolism Character and High Yield Expression Cooperate with Anti-Insect Quality of Bt-Transgenic Cotton
    Bt棉氮素代谢特征与丰产性抗虫性协同表达的化学调控
短句来源
    HIGH QUALITY FORAGE HEMARTHRIA COMPRESSA VAR.FASICULATA GROWN WILD ON THE MOUNTAINOUS LATERITIC SOIL IN SOUTH CHINA
    红壤山区野生牧草——牛鞭草Hemarthria compressa var.fasiculata(Lam.)Keng的研究
短句来源
    Chromosome translocation and selection of new rice varieties with good quality by CO_2 laser irradiation of hybrid rice callus
    CO_2激光辐照杂交稻愈伤组织
短句来源
    A STUDY FOR POTASH APPLICATION TO RAISE WHEAT GRAIN YIEAD AND TO IMPROVE ITS QUALITY
    施钾对提高小麦籽粒产量和蛋白质含量初步研究
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  quality
These bases are useful for building systems for evaluating image quality.
      
Such bases are useful for building systems for evaluation image quality.
      
Some theoretical issues and implementation details about the algorithm are discussed, including the solution of the pricing subproblem, the quality of LP relaxations, the branching scheme as well as the column management.
      
Seven topological descriptors are finally selected from 127 topological descriptors by GAPLS method to build a QSRR model with a high regression quality of squared correlation coefficient (R2) of 0.99998 and standard deviation (S) of 2.88.
      
These results might serve as a base for quality evaluation of Magnetitum (Cishi).
      
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(The Kiangsu Affiliated Academy of the Chinese,Academy of Agricultural Sciences)Hybrid vigour in cotton has been reported by a number of workers.Most of them dealtwith interspecific hybrids.They were mostly marked with an increase in plant growth,especially in the F_1 crosses of American Upland × Sea-island and American Upland × Egyptiancotton.In order to study the possibility of producing an extra long fibre cotton in the Yang-tze basin and the Hwangho Plain by making use of hybrid vigour,the following problemswere...

(The Kiangsu Affiliated Academy of the Chinese,Academy of Agricultural Sciences)Hybrid vigour in cotton has been reported by a number of workers.Most of them dealtwith interspecific hybrids.They were mostly marked with an increase in plant growth,especially in the F_1 crosses of American Upland × Sea-island and American Upland × Egyptiancotton.In order to study the possibility of producing an extra long fibre cotton in the Yang-tze basin and the Hwangho Plain by making use of hybrid vigour,the following problemswere investigated at Nanking,Kiangsu during 1959-1962.(1)Combining ability between different interspecific crosses with special reference toyield,earliness and fibre qualities.(2)Morphological and physiological characters of economic importance in F_1 hybrids.(3)Performance of promising hybrids in field production.(4)Method of producing hybrid seeds with cheaper cost and less labour.Fifty-nine combinations were studied from 1960 to 1962,among which Pong-zai No.1(Upland cotton)×L.S.4923(Sea-island)was the best in yield and earliness.The averageyield of this F_1 hybrid in three years with 178 kg.of seed cotton or 53.7 kg.of lint cotton permow.As compared with the parents it was 94.35% of seed cotton or 82.2% of lint cotton ofthe yield of Delta-upland cotton and 187.17% of seed cotton or 172.74% of lint cotton of theyield of Sea-island L.S.4923.The fibre quality of F_1 hybrids approached Sea-island parent with a mean fibre length of40 m.m.,mean fibre fineness of 7000 meters per gram wt.,and single fibre strength of 4.5g.The methods and procedures for producing commercial hybrid cotton seed were as follows:(1)Hybrid F_0's seed was produced by hand emasculation and pollination which was ofvalue in areas abundant with hand-labor or adapted to transplanting for saving seeds up to4/5.(2)The female parent with recessive markers,was pollinated by hand without emascula-tion.In the thinning of the hybrid progeny all recessive plants were removed,leaving onlythe true F_1's.The recessive characters used for markers were virescent yellow foliage,redstem and hairy petiole of the seedling.The percentage of hybrid seed setting for differentupland cotton varieties ranged from 13% to 78%.Observations on heterosis in the characters of F_1 hybrids of G.hirsutum×G.barbadensewere summarized as follows:Plant Characters Comparison of bybrid with Upland and Seaisland parentsDays from planting to seedling Earlier than either parentDays from budding to flowering Intermediate nearer to earlier UplandDays from seedling to boll maturity Intermediate nearer to late Sea-island Days of bud development Intermediate nearer to earlier UplandDays of boll development Longer than Sea-islandDays from seedling to first boll maturity IntermediatePlant height Taller than either parentNumber of monopodia Less than either parent,but approaching Up landNumber of sympodia More than either parentNumber of fruiting points per plant More than either parentPosition of main stem nodes where first fruiting branch appears Lower than either parentInternode length of axis Longer than either parentInternode length of fruiting branch Longer than either parentPetiole length Longer than either parentLeaf area Larger than either parentLeaf lobe index Intermediate,approaching Sea-islandShedding percentage IntermediateDistribution of bolls in different parts of the plant Approaching Sea-island,most bolls setting at middle and upper parts of the plantWeight of seed cotton per boll IntermediateNumber of ovules per boll Approaching Sea-island in a lower numberMotes percentage More than either parentPistil length IntermediateCorolla area and index Larger than either parentSeed index Larger than either parentLint index IntermediateMaturity Intermediate,approaching late Sea-islandFibre length Longer than either parentFibre fineness Approaching Sea-islandYield in seed cotton Approaching Upland,higher than Sea-islandYield in lint cotton Lower than Upland,higher than Sea-islandProduction of dry matter More than either parentProduction of dry matter per square meter of leaf area More

1959—1962年试验证明,海陆杂种一代具有早熟、丰产、优质的特性。海陆杂种一代的籽棉产量接近陆地棉,而显著高于海岛棉。成熟期较海岛棉早,比陆地棉偏迟。生育特性一般介于两亲之间,不同程度的偏向于海岛棉,有的特性超过两亲范围以外。纤维细长,强度高,可以制成高挡纺织品。在江苏各地示范试种结果良好。在制种技术方面研究证明,采用具有某一隐性指示性状,进行不去雄杂交(人工辅助授粉),杂交率达70%,每工作日可制种6—8斤。

1.The variation and deterioration of important economic characters of a commercialvariety of upland cotton can be detected after being grown for several years.For instance,shorter fiber increases in proportion,the lint index and the ginning percentage become loweredreadily.Variations on growth habit and boll and seed characters tend to enhance year afteryear.Though the degenerated plants possess better boll bearing capacity,but owing to theirsmaller boll size and lower ginning percentage,the yield usually decreases...

1.The variation and deterioration of important economic characters of a commercialvariety of upland cotton can be detected after being grown for several years.For instance,shorter fiber increases in proportion,the lint index and the ginning percentage become loweredreadily.Variations on growth habit and boll and seed characters tend to enhance year afteryear.Though the degenerated plants possess better boll bearing capacity,but owing to theirsmaller boll size and lower ginning percentage,the yield usually decreases by 15.5-26.6 percentas compared with the normal plants.2.Degeneration is materially the adaptability of the cotton plant to its environmentalconditions.It can not be considered as declination in vitality.Degeneration is due mainly toheritable variability of the cotton plant.Under inferior cultural practices and unfavorablesoil and climatic conditions,and under the action of natural selection,characters favorablefor with-standing adverse conditions get enhanced.And on the other hand,the importanteconomic characters become deteriorated.Varietal mixture exerts influence upon degeneration,nevertheless it is not an importantcause3.Measures recommended for improving the seed quality and preventing degenerationare:(1)continuous selection of promising plants for seed multiplication,(2)better culturalpractices,and(3)appropriate handling of seeds.

棉种“退化”是对环境条件的一种适应性,而不是生活力衰退。引起棉种“退化”的原因,主要由于棉种的变异性较大,在不良的农业技术和不利的气候因素的影响下,通过自然选择作用的结果。品种混杂对棉种“退化”也有很大影响,但只是加重“退化”的因素,而不是引起“退化”的主要原因。不断地加强人工选择,并改善栽培管理条件,做好棉种管理等工作,是提高棉花良种种性防止“退化”的根本措施。

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,

 
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