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genotypes
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  基因型
    The Differences and Physiological Mechanisms on Potassium Efficiency among Different Wheat Genotypes
    不同基因型小麦钾效率差异及生理机制
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    Studies on the Phosphorus Efficiency and Mechanism of Its Discrepancy among Maize (Zea Mays L.) Genotypes
    玉米不同基因型的磷效率差异及其机理研究
短句来源
    Molybdenum Efficiency of Winter Wheat Genotypes and Its Physiological Bases
    冬小麦不同基因型的钼效率及其生理基础
短句来源
    Study on Differences in Response of Rice Genotypes to Nitrogen Fertilization and Nitrogen Use Efficiency
    不同水稻基因型对氮肥反应的差异及氮素利用效率的研究
短句来源
    Characteristics of Yield Components, Plant Type and Canopy Structure of Super-High-Yielding Wheat Genotypes
    小麦超高产基因型产量因素、株型和冠层结构特征的研究
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  “genotypes”译为未确定词的双语例句
    Eco-Physiological Characteristics and Regulation of Nitrogen Uptake and Utilization Efficiency in Different Rice Genotypes
    水稻品种氮素吸收利用效率的生理生态特征及调控研究
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    Adaptation of Safflower Genotypes(Carthamus tinctorius. L.)in Hu He Hao Te 1979—1982
    油用红花在呼和浩特地区适应性的表现(1979年至1982年)
短句来源
    Interactions between genotypes and environments in Nicotiana rustica——Ⅰ.Analysis of linear models
    黄花烟草的遗传型和环境的互作——Ⅰ.线性模型分析
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    Studies on the Sensitivity of Different Rice Genotypes to Photoinhibition and its Mechanism
    水稻不同品种的光抑制敏感性差异及其生理机制
短句来源
    CONTENT OF NITROGEN AND PHOSPHORUS AND SUPEROXIDE DISMUTASE ACTIVITY IN WILD RAPESEED GENOTYPES
    野生油菜种子氮磷含量及其超氧化物歧化酶活性初探
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  genotypes
The distributions of GNB3 C825T genotypes were CC (27.2%), TT (42.9%), and CT (29.9%) in the hypertensive subjects and CC (27.7%), TT (42.4%), CT (29.9%) in the normotensive subjects.
      
Further analysis shows that there is no association between C825T genotypes and age, body mass index (BMI), Glucose (GLU), Triglyceride (TG), Cholesterol (CHO), systolic blood pressure (SBP) and diastolic blood pressure (DBP).
      
Compared to individuals with EPHX1 rs1051741 CC or rs2234922 AA genotype in the drinkers, the risk of CBP in those carrying genotypes of EPHX1 rs1051741 CT+TT or rs2234922 AG+GG was decreased, respectively (P = 0.04, P >amp;lt; 0.01).
      
Karyotypic analysis on the metaphase plates from the root meristem demonstrated different genotypes.
      
Effects of Genotypes at the Unspecific Esterase (Est) and Leucine Aminopeptidase (Lap) Loci on the Temporal Dynamics of Morpholo
      
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Four different types of cytoplasmic male sterility in maize were tested for their identityby use of the restoration technique.Male-sterile lines incorporated with cytoplasm of theTexas source were found to be completely affected in crosses by a group of restorers includ-ing W153,W28 and G32,and partially restored by W24,M14 and A34.This made a figure of6 restorers out of about 60 inbreds thus tested in the Texas cytoplasm.Inbreds W153 wasselected as a differential restorer for T-type steriles since it gave no...

Four different types of cytoplasmic male sterility in maize were tested for their identityby use of the restoration technique.Male-sterile lines incorporated with cytoplasm of theTexas source were found to be completely affected in crosses by a group of restorers includ-ing W153,W28 and G32,and partially restored by W24,M14 and A34.This made a figure of6 restorers out of about 60 inbreds thus tested in the Texas cytoplasm.Inbreds W153 wasselected as a differential restorer for T-type steriles since it gave no reactions to the othertypes.For the Moldavia type of male sterility,formerly offered by Prof.Hadjinov,we founda partially restoring inbred W9 to be better suited for the similar purpose.The third andfourth type of male sterility,designated as B- and G-type,came through our own selectionsfrom two Bulgarian varieties.Separation between them seemed difficult.Since A374 gavepartial pollen fertility to the B-type steriles exclusively,it could be used as a differentiat orfor this type of cytoplasm.Pollen restoration in crosses involving W153 and W28 followed the expectation based ona dominant Mendelian gene.However,data obtained from segregating progenies of doublecrosses in which G32 was the restorer suggested strongly that two dominant complementarygenes were more workable.The difference in genotype of inbreds concerned in variousinvestigations seemed to be responsible for such inconsistent results.Segregating patterns in the Texas sterile crosses of the partial restorer,W24 or M14,varied with plants used as the pollen parent and with the date of planting.It appeared verylikely that W24 and M14 were heterozygous for major restorer genes since one sterile versionof W24 and four fully restoring lines of M14 had been established by conversion and test-cross-ing respectively.Dominant modifiers might also be present in either of the inbred popula-tions.In the presence of Moldavian cytoplasm the recessive allele of the restorer gene seemedto exert an abortive action to its pollen carriers produced by the heterozygote.When plantsheterozygous for the restorer gone were outcrossed to male steriles carrying the right cyto-plasm,all plants from the progenies proved to be pollen shedders.It was suggested that theM-type cytoplasm might be similar to that of S-type.Tentative genotypes related to pollen restoration of Texas male sterility had been workedout for a number of inbreds on the basis of two dominant complementary genes.Workingschemes for the production of double-cross seeds of maize without detasseling had been sum-marized and discussed by the authers.

三种细胞质遗传的玉米雄花不孕类型各有其专效的恢复系和部分恢复系。在 T 型细胞质基础上,测定出两对显性互补基因决定着花粉孕育性的恢复,同时还有显性修饰基因存在,影响其表现的程度。春播和夏播的不同环境条件只对部分恢复性的表现发生明显影响,对全恢复性和不孕性则很少能够改变。M 型恢复性的等位隐性基因在杂合株内对花粉粒具有某种致死或败育作用,故测交后代表现不分离现象。本文初步鉴定了若干常用自交系的 T 型恢复基因型,并以此作为根据,提出了配制全不去雄的玉米双交种的各种可能方案。

The ploidy of about thousand pollen plants of rice that were obtained from anther culture in vitro were studied and the homozygosity and the hereditary rule of a part of those plants derived from hybrid F1 were investigated.Sixty per cent of the studied pollen plants were diploids,and set seeds normally.And ninety per cent of pollen plants of those derived from hybrid F1 produced uniform offsprings without any segregation,i.e.the progenies of those pollen plants were genetically homozygous.Segregation either...

The ploidy of about thousand pollen plants of rice that were obtained from anther culture in vitro were studied and the homozygosity and the hereditary rule of a part of those plants derived from hybrid F1 were investigated.Sixty per cent of the studied pollen plants were diploids,and set seeds normally.And ninety per cent of pollen plants of those derived from hybrid F1 produced uniform offsprings without any segregation,i.e.the progenies of those pollen plants were genetically homozygous.Segregation either on characters or fertility or on both of them occurred in progenies of the rest 10% of the studied pollen plants,but appeared rather simple and obviously distinct from those in F.The recombination and segregation for four characters in forty nine pollen plants obtained from hybrid F1 of the same cross were studied in comparison with F2 plants of the same cross combination.Both of them showed fundamentally similar results.The experimental results,denoted that the frequency of producing pollen plants for various micrnspores of hybrid F1 were identical.And no obvious competition among pollens with different genotypes were observed during culture.Two new varieties of keng rice were obtained by means of pollen haploid plant breeding and have been put into-seeds propagation and distribution for practical production.

对自1972年以来,通过花药培养所获得的近千株花粉植株的倍数性和部分来源于杂种F_1的花粉植株的纯合性及性状遗传规律进行了研究。结果观察到60%的花粉植株为能正常结实的二倍体。90%来自F_1的花粉植株的后代是整齐一致没有分离的,也即在遗传上是纯合的。其余10%来自F_1的花粉植株的后代或在性状上、或在能育性上、或同时在性状与能育性上发生分离。但性状分离一般都较简单,与F_2的分离有明显区别。对来源于同一杂交组合F_1的49个花粉植株的四个性状的重组与分离的规律,以同组合F_2植株为对照,进行了研究。结果两者表现基本相似。说明杂种F_1的各种小孢子发育为花粉植株的机率是相同的,没有发现在培养过程中不同基因型的花粉间有明显的竞争。 通过花粉单倍体育种已培育出二个粳稻新品种在生产上繁殖推广。

67 inbred lines of maize had been tested for their restoringreaction to the C—type cytoplasmic male—sterility.They were clas-sified into four groups according to the degree of pollen restoringability.Both the male—sterility and pollen restoration manifested inthe tested lines were found to be fairly stable under different envi-ronmental conditions and in the last two years.Pollen restoration to the C—type male—sterility was found tobe controlled by two duplicate genes,temporarily designated as Rf_3and Rf_4.The...

67 inbred lines of maize had been tested for their restoringreaction to the C—type cytoplasmic male—sterility.They were clas-sified into four groups according to the degree of pollen restoringability.Both the male—sterility and pollen restoration manifested inthe tested lines were found to be fairly stable under different envi-ronmental conditions and in the last two years.Pollen restoration to the C—type male—sterility was found tobe controlled by two duplicate genes,temporarily designated as Rf_3and Rf_4.The sterility maintaining genotype was therefore assignedto be rf_3 rf_3 rf_4 rf_4,while the restoring inbreds could have oneof the following genotypes:Rf_3 Rf_3 Rf_4 Rf_4,Rf_3 Rf_3 rf_4 rf_4 andrf_3rf_3 Rf_4 Rf_4:These assumptions were verified in various segregatingprogenies with altogether five restoring lines tested for such purpose.Two of the single cross hybrids in the C—type male—sterilecytoplasm were compared with their normal versions in several loca-lities for their adaptability,yield performance and disease resistance,and found to differ insignificantly in all the tested trials so far.The cytoplasmic male—sterility has been now incorporated in thesingle cross hybrid Yu Non 704 for commercial production in HonanProvince.

从测定67个自交系对 C 型雄花不育性的反应表明:玉米 C 型细胞质雄花不育及其恢复性是一种稳定的遗传特性,一般环境条件的差异,不足以改变其雄花育性表现。C 型雄花不育的恢复性受两对独立的显性重复基因(Rf_3、Rf_4)所支配。因此,不育系及其保持系只有 rf_3rf_3rf_4rf_4这一种基因型,而恢复系则有三种基因型,即 Rf_3Rf_3Rf_4Rf_4、Rf_3Rf_3rf_4rf_4、rf_3rf_3Rf_4Rf_4,并推断恢复系中由单基因决定恢复性者居多。同一恢复系内,单株之间可能出现基因型的差别。广泛布点试验结果说明,由 C 型不育系配制的杂交种与普通胞质的同组合杂交种,均具有相同的适应性、抗病性和产量。C 型雄花不育系配制的豫农704,已开始在生产上应用。

 
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