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genotypes
相关语句
  基因型
     Studies on Adaptive Mechanisms of American Black Walnut with Different Genotypes to Drought Stress
     不同基因型美国黑核桃对干旱胁迫的适应机制研究
短句来源
     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
短句来源
     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
     Difference of Nitrate Content between Genotypes of Pak-choi and It's Genetic Behavior
     小白菜硝酸盐含量基因型差异及其遗传行为的研究
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
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  种基因型
     (2)AMY 1 isozyme was controlled by three codominant alleles-AMY1 ̄B , AMY 1 ̄Y,AMY1 ̄C and formed six genotypes:AMY1 BB,AMY1 BY,AMY1 BC,AMY1 YY,AMY 1 YCand AMY1 CC.
     (2)AMY1同工酶受AMY1 ̄B、AMY1 ̄Y,AMY1 ̄C三个共显性等位基因控制,从而构成AMY1BB,AMY1BY,AMY1BC,AMY1YY,AMY1YC和AMY1CC六种基因型
短句来源
     Type 2 diabetic patients with DN in Hans had 4 genotypes E2/E2, E2/E3, E2/E4, E3/E3 and 3 alleles E2, E3, E4, and their frequencies were 0. 238,0.191, 0.191, 0. 381 and 0.429, 0.476, 0.095 respectively.
     DN有4种基因型,即E2/E2、E2/E3、E2/F4和E3/E3,其频率和3个等位基因频率为0.238,0.191,0.191,0.381和0.429,0.476,0.095。
短句来源
     (2) Type 2 diabetic patients without DN in Hans had 2 genotypes, E2/E4, E3/E3, and 3 alleles, E2, E3, E4, and their frequencies were 0.500, 0. 500 and 0. 250, 0. 500, 0. 250, respectively.
     (2)汉族2型DM有2种基因型E2/E4和E3/E3,其基因型和3个等位基因频率分别为0.500、0.500和0.250,0.500,0.250;
短句来源
     the numbers of genotypes were 17,22,7,14,14,15,6,7,12 or 8 respectively.
     分别检出17、22、7、14、14、15、6、7、12和8种基因型;
短句来源
     Results Five alleles containing (TAAAA) 6-10 repeats and 14 genotypes including 6/6,6/7,6/8,6/9,6/10,7/7,7/8,7/9,7/10,8/8,8/9,8/10,9/9, 9/10 repeats genotypes were present in the subjects.
     结果(1)检测到(TAAAA)6~10次重复5个等位基因及6/6、6/7、6/8、6/9、6/10、7/7、7/8、7/9、7/10、8/8、8/9、8/10、9/9、9/10重复14种基因型
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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
短句来源
     Studies on Genotypes of Human Papillomaviruses in Condyloma Acuminata
     尖锐湿疣中人乳头瘤病毒感染状况的基因分型研究
短句来源
     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
短句来源
     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
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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。

It was demonstrated cytologically that in a natural population of the grasshopper,Catantops brachycerus, located at Sheh Hills in the vicinity of Shanghai, some individualswere found to carry an extra chromosome fragment in addition to the normal complementof 11 pairs of autosomes and an X chromosome in case of males. This extra fragment,being borne at the distal end of the large arm of the autosome No. 8 with no visibleloss on the part of the latter, is composed exclusively of heterochromatin, which showsnegative...

It was demonstrated cytologically that in a natural population of the grasshopper,Catantops brachycerus, located at Sheh Hills in the vicinity of Shanghai, some individualswere found to carry an extra chromosome fragment in addition to the normal complementof 11 pairs of autosomes and an X chromosome in case of males. This extra fragment,being borne at the distal end of the large arm of the autosome No. 8 with no visibleloss on the part of the latter, is composed exclusively of heterochromatin, which showsnegative heteropycnosis at M_1 similar in behavior to that of the X-chromosome. Thisfinding, together with other circumstantial evidence seems to indicate that this extra frag-ment probably found its origin from the X-chromosome. A close examination of the be-havior of the unequal bivalent during the spermatogenesis of the hemizygotes has revealedfurther two points of interest, one is the existance of a single chiasma between the cen-tromere region and the point of the attachment of the extra fragment in the diplotenestage and the other is the appearance of equational segregation of the unequal bivalentin the first anaphase (A_1). These two facts taken together bear strong evidence in sup-port of one plane theory of crossing-over and of one chiasma and one crossing-over rela-tionship theory as well. Of 530 male insects collected and examined from the population, 100 were foundto be hemizygous and 3 homozygous for the extra fragment. This amounts to a totalfrequency of 10% for this fragment in the population. Statistical analysis of the data forthe 3 different genotypes, homozygous normal, hemizygous and homozygous for the extrafragment shows that not only the total respective frequencies obtained for the 3 classesare in close conformity with the values expected on the basis of the Hardy-Weinbergformula, but also the variation in 3 successive generations and in different seasons doesnot significantly deviate from each other, giving a strong indication that the frequencyof the extra fragment has already reached a state of dynamic equilibrium in the popula-tion. As to the mechanism of how equilibrium of this chromosomal polymorphism ismaintained in the population, it remains to be an open question, though there is an in-dication of the favorable selection for the hemizygotes.

在上海附近的佘山,发现短角斑腿蝗自然群体中的一些个体的第8染色体是不等双价体。该染色体的额外片段比较大,由异染色质组成,并在减数分裂中期I和X染色体一样呈现负异固缩现象。在带有这个额外片段的半合体减数分裂时,发现第一次都是均等分离。这个现象与所观察到的下列事实一致,就是这对异形染色体的着丝点与额外片段之间经常只出现一个交叉点,再一次证明交换与交叉一对一关系和交换先于交叉理论的正确性。有关这个片段的来源,从—些旁证指出有可能来自X染色体。 所分析的530个个体中,100个是半合体,3个是带有这个片段的纯合体,因而得知额外片段在群体中的频率为10%。统计分析表明这三种遗传型,即正常纯合体、半合体和额外片段纯合体的频率符合Hardy-Weinberg公式,而且在连续三个世代之间以及不同季节之间这些频率没有显著的变化。有关额外片段在群体中的平衡机制,我们认为有可能是选择对半合体有利而使这种染色体维持稳定的多态平衡。

Three varieties of carp were chosen as parental stocks for cross breedings:mirrorcarp of the scatter-scaled type (MCS),fully scaled red carp (RC),and the Long-chow mirror carp (LMC).Hybrid offspring (F_1) were reared in coexistence withthe inbred offspring at the same stocking rate and in the same pond.By the end ofthe first growing season the average individual weight of the offspring of MCS(?)×RC♀ was 50—60% heavier than the inbred RC,and that of MCS(?)×LMC♀ was57% heavier than the inbred LMC,meanwhile the...

Three varieties of carp were chosen as parental stocks for cross breedings:mirrorcarp of the scatter-scaled type (MCS),fully scaled red carp (RC),and the Long-chow mirror carp (LMC).Hybrid offspring (F_1) were reared in coexistence withthe inbred offspring at the same stocking rate and in the same pond.By the end ofthe first growing season the average individual weight of the offspring of MCS(?)×RC♀ was 50—60% heavier than the inbred RC,and that of MCS(?)×LMC♀ was57% heavier than the inbred LMC,meanwhile the survival rate of both hybrids wereas high as the inbred ones.Regarding the inheritance of scale-covering and body coloration,the resultsof our experiment indicate that the scattered scale-covering,and the red coloration aswell,is a recessive character.The second generation (F_2) derived from the self-crossof the hybrid (F_1) of MCS(?)×RC♀ should,theoretically,have 8 genotypes and 4phenotypes.The occurrence of the 4 phenotypes have actually been realized,amongwhich the red mirror carp (scatter-scaled,red coloration) has been a new recombina-tion,distinct from F_1 hybrid and from either parent in external appearance.Thescalation pattern and the body coloration of the red mirror carp seem to be theresult of homozygosis of the two recessive genes.Rearing experiment shows that thered mirror carp has a growth rate superior to MCS or RC.It is to be expected thatit should be relatively stable in inheritance and would emerge,as a new,economicvariety of the carp.

本研究希望通过鲤鱼品种间杂交出现的杂种优势来提高鲤鱼的产量以及在杂种的后代中选择具有优良的经济性状的类型培育出新的鲤鱼品种。两组杂交的杂种一代具有明显的杂种优势,可以直接应用于渔业生产上并可望获得增产效果。根据对鳞被和体色的遗传特性的研究结果断定散鳞镜鲤与兴国红鲤的杂种二代中出现的红色镜鲤的鳞被和体色是由纯合型隐性基因控制的,可以预期它的后代不再出现分离而可能成为一个稳定的新品种。研究了不同品种及其杂种的血清蛋白聚丙烯酰胺盘状电泳图谱,希望借此作为一种选种的工具。

 
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