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kernel     
相关语句
  籽粒
    Identification of QTL for Kernel Oil Content and Analysis of Related Traits in Maize
    玉米籽粒油分QTL定位及相关性状的分析
短句来源
    Study on Molecular Mechanism about Kernel Hardness and Polyphenol Oxidase in Common Wheat and Related Species
    小麦及近缘种属籽粒硬度、多酚氧化酶性状的分子机理研究
短句来源
    Experiments on Seeded Depth and the Content of Soluble Sugar in Kernel of Yangzhou Sweet Corn
    扬州甜玉米播种深度与籽粒糖分含量的试验
短句来源
    Effects of Nitrogenous, Phosphorous and Potassium Fertilizers on Kernel Yield and Developmental Level of Root Rod Disease in Pea
    氮、磷、钾肥对豌豆籽粒产量及根腐病发病程度的影响
短句来源
    PHYSIOLOGICAL MECHANISM OF KERNEL SHRIVELLING IN WHEAT
    小麦籽粒皱缩的生理机制
短句来源
更多       
  
    A PRELIMINARY STUDY ON THE INHERITANCE OF KERNEL WEIGHT IN F_1 AND F_2 WINTER WHEAT PROGENIES
    冬小麦杂种后代(F_1F_2)重遗传的初步分析
短句来源
    THE SINGLE KERNEL EVALUATION TECHNIQUES FOR THE HIGH-LYSINE CORN(Ⅰ)——FOLIN PHENOL COLORIMETRIC METHOD
    高赖氨酸玉米单鉴别技术初报——(Ⅰ)—Folin 酚比色法
短句来源
    The Analysis of Ear—kernel Structure of High Yield Corn Hybrids
    玉米高产杂交种穗结构的分析
短句来源
    Studies on the Relationship Between Endosperm Cell Development and Kernel Weight of Summer—Maize(Zea mays L.)
    夏玉米胚乳细胞建成与重关系研究
短句来源
    STUDY ON GRAIN-FILLING PHYSIOLOGY AND TECHNICAL MEASURES TO INCREASE KERNEL WEIGHT OF SPRING WHEAT
    春小麦籽灌浆生理与提高重措施的研究
短句来源
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  种仁
    And Yongsheng source performed the best and yielded a maximum kernel weight of seed of 81.43%, a maximum oil of 57.93% from kernel and 47.17% from whole seed, and a maximum total unsaturated fatty acid of 79.68%.
    其中永胜产麻疯树种子的品质最好,它的出仁率为81.43%,种仁含油率57.93%,种子含油率47.17%,不饱和脂肪酸含量79.68%。
短句来源
    There were positive heterosis(4.75%)for oil content andnegative heterosis(-3.60%)for total amino acid content in seed kernel.
    F_1的种仁含油率表现正的平均优势(4.75%),种仁氨基酸总量表现负的平均优势(-3.60%)。
短句来源
    The seed produced from Yongsheng was found the best, and its kernel weight was 81.43, with oil from kernel 57.93 and oil from whole seed 47.17,and total unsaturated fatty acid 79.68 . The seeds from Panzhihua and Ningnan were also good.
    其中永胜产麻疯树的种子品质最好,其出仁率为81.43%,种仁含油率57.93%,种子含油率47.17%,不饱和脂肪酸含量79.68%.
短句来源
    Individual Variation of Seed Features and Oil Content in Kernel of Schisandra chinensis Ball. Traits
    五味子种籽性状与种仁含油特性的个体变异规律
短句来源
    The Regularity of Fatty Acid Component and Contents Changes in the Seed Kernel Oil of Xanthoceras sorbifolia in Different Areas
    不同地区文冠果种仁油脂肪酸组分及含量的变化规律
短句来源
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  子粒
    STUDY ON THE RELATIONSHIP BETWEEN KERNEL ABORTION AND DISTRIBUTION OF MINERAL ELEMENTS IN MAIZE EAR
    玉米子粒败育与果穗上元素分配关系的研究
短句来源
    Progress on The Study of Maize Kernel Abortion
    玉米子粒败育机理研究进展
短句来源
    Distribution of mineral elements along the maize ear and its relationship with kernel abortion
    玉米果穗矿质元素分布与子粒败育关系研究
短句来源
    Analysis of Physiological Mature Stage and Kernel Naturally Dry-Down Rate in 38 Corn Inbred Lines in Heilongjiang
    黑龙江省38个玉米自交系生理成熟期及子粒自然脱水速率的分析
短句来源
    Study Progress in Starch of Corn Kernel
    玉米子粒淀粉研究进展
短句来源
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      kernel
    The kernel of a certain derivation of the polynomial ringk[6] is shown to be nonfinitely generated overk (a field of charactersitic zero), thus giving a new counterexample to Hilbert's Fourteenth Problem.
          
    First we show that the representation ofG×G on eachG-biinvariant irreducible reproducing kernel Hilbert space in Hol(D) is a highest weight representation whose kernel is the character of a highest weight representation ofG.
          
    Using the scalar automorphy kernel ofD, we construct a ?*,G-invariant kernel onD×D×D.
          
    Taking a specific determination of its argument and studying its limit when approaching the Shilov boundary, we are able to define a ?-valued,G-invariant kernel for triples of mutually transversal points inS.
          
    Approximation of Distribution Spaces by Means of Kernel Operators
          
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    Heterosis and genetic variance component studies on 36 wheat crosses and 14 parentsrevealed that:1.Yield per plant,kernels per spike and kernel weight of F_1 hybrids showed a markedheterosis over mid-parental values by 20-30%.Plant height and date of heading ranked next,which averaged about 10% in magnitude,being negative in direction for heading date.Fertilespikelets per head manifested only a slight degree of heterosis.F_(1-)MP's for these characterswere highly significant as shown by t-tests.However,head...

    Heterosis and genetic variance component studies on 36 wheat crosses and 14 parentsrevealed that:1.Yield per plant,kernels per spike and kernel weight of F_1 hybrids showed a markedheterosis over mid-parental values by 20-30%.Plant height and date of heading ranked next,which averaged about 10% in magnitude,being negative in direction for heading date.Fertilespikelets per head manifested only a slight degree of heterosis.F_(1-)MP's for these characterswere highly significant as shown by t-tests.However,head length,kernel weight per head andheads per plant showed,on the average,no heterosis.2.Variability of heterosis of these characters descended in the following order:yield perplant→heads per plant,fertile spikelets per head→kernel weight per head,kernel perhead→kernel weight→heading date→head length,plant height.3.Heritability estimates (in the broad sense) as analyzed from F_1 data were from highto low as follows:head length→plant height→kernel weight→kernel weight per head→kernel per head,fertile spikelets per head→heads per plant,yield per plant.4.Relative values of general comining ability (g.c.a.) from high to low were as follows:head length,fertile spikelets per plant→plant height,kernels per head→kernel weight perhead→kernel weight,heads per plant→yield per plant.For yield per plants,specific com-bining ability played an important role.5.There was a close relation between the general combining ability value and the cor-relation or regression coefficient of F_1 on m(?)d-parental values.The larger the g.c.a.value,the higher the correlation or regression coefficient,indicating that many characters of F_1 hybridswere determined to a certain extent by parental means.The r or b value became non-significantas the g.c.a.decreased below 40%.6.In predicting the breeding value of parents or hybrid combinations,actual performanceof F_1 hybrids should be emphasized first.The extent of heterosis might also be of value,sincea part of heterosis arisen from epistasis could be fixed in later generations.Mid-parentalvalues were of considerable importance.

    本文通过优势和配合力的分析研究小麦亲本选配问题。试验表明:杂种第一代的一株粒重、一穗粒重、千粒重的优势最大,一般比两亲平均值大20—30%;其次为株高和抽穗期:其他穗部性状的优势很小或无显性。应用遗传变量成分分析法估算八个性状的配合力,在供试的亲本中,以穗长和结实小穗数的一般配合力为最大;株高、一穗粒数和一穗粒重次之;千粒重与一株穗数,一般配合力和特殊配合力所占的比重互有高低,因组合类型而异;一株粒重的一般配合力最小,它的特殊配合力占居主导地位。一般配合力大的性状,杂种与两亲平均值的相关或迴归系数也大。初步认为,在第一代对亲本或组合的评价,既要看杂种的实际表现,还要考虑它的优势,而以前者为主要依据;两亲平均值也有相当重要的意义。

    After testing 70 inreds crossed with a male-sterile line,there were found 1 very strongrestorer and 8 relatively strong restorers,comprising 12.86% of the total inbreds.Hybridsinvolving the male-sterile line usually showed a tendency lower in plant height than thenormal ones but higher in kernel yield.The number of male-sterile and restorer plants,occur-red in the hybrids from crossing the male-sterile and restorer lines was connected closely withthe strength of male-sterility and restoring ability of...

    After testing 70 inreds crossed with a male-sterile line,there were found 1 very strongrestorer and 8 relatively strong restorers,comprising 12.86% of the total inbreds.Hybridsinvolving the male-sterile line usually showed a tendency lower in plant height than thenormal ones but higher in kernel yield.The number of male-sterile and restorer plants,occur-red in the hybrids from crossing the male-sterile and restorer lines was connected closely withthe strength of male-sterility and restoring ability of the parental lines,bearing a phenomenonof“dosage effect”.The characteristics of restoring ability might be introduced into the male-sterile line.

    统计连年所测验的70个玉米自交系与雄性不育系杂交后的表现,其中具有极高度恢复力者1个,较高度恢复力者8个,共占总数12.86%。利用不育系所组成的杂交种,一般在植株高度上较差,而在果穗籽粒产量上较优。利用不育系与恢复系制造杂交种,其雄性不育和恢复植株的多寡,与亲本品系雄性不育和恢复力的强弱相关连,呈“剂量效应”的现象。恢复力特性可输入到不育系中去。

    By studying ample results on corn breeding, the author put forth the following summary on the relation between the phenotypic expressions of the inbred lines and the heterosis of their F1 hybrids. To meet the need for analytical purpose, the inbred lines studied were classified as 5 plant-types, 3 ear-types and 5 tassel-types.1. There is greater possibility to obtain strong heterosis by using the inbred lines of different plant-types in the cross. This is especially true when the parental com-tinations are normal...

    By studying ample results on corn breeding, the author put forth the following summary on the relation between the phenotypic expressions of the inbred lines and the heterosis of their F1 hybrids. To meet the need for analytical purpose, the inbred lines studied were classified as 5 plant-types, 3 ear-types and 5 tassel-types.1. There is greater possibility to obtain strong heterosis by using the inbred lines of different plant-types in the cross. This is especially true when the parental com-tinations are normal × cylindrical, normal × long-cylindrical, normal × pyramidal, normal × fan-shaped, cylindrical × fan-shaped and pyramidal × fan-shaped.2. There is greater possibility to obtain strong heterosis when the ear of both parents or one of them belongs to the I-types (husks much longer than the core).3. The possibility of obtaining strong heterosis is also greater by pairing the parents with tassels of medium development. This possibility is not found in crossing the parents with well developed tassels.4. It is rather earier to obtain strongly vigorous hybrid with increased number, weight and quality of kernels by crossing a parent of large or medium dent type with more rows per ear (16 or more) and more kernels per row with the other parent of half-dent or flint type with more rows per ear or more kernels per row.5. A strongly vigorous hybrid resistant to Helminthosporium leaf spots is only expedient when both parents are resistant, or by crossing a resistant parent with a less susceptable or little resistant parent.

    本文依据玉米育种实践和亲本性状遗传规律的资料,从亲本自交系外部性状与杂种优势的关系上,进一步探讨如何有预见地组配强优势玉米杂交种的问题。研究结果表明,亲本的“株型”、“果穗类型”、“雄穗类型”、“果穗性状”和“抗大、小叶斑病性能”等主要性状,与杂种优势的大小有着一定的联系。根据亲本自交系的上述性状的差异,选择并合理搭配杂交组合,可以大大提高强优势杂交种出现的机率,从而提高了搭配杂交组合的预见性,减少了杂交育种工作中的盲目性。

     
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