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modifier gene
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  修饰基因
     Objective To ascertain whether connexin 26 (Cx26) gene was a nuclear modifier gene in an extensive family with matrilineal nonsyndromic deafness associated with A1555G mutation in Huaiyin,China.
     目的探讨连接蛋白26(connexin26,Cx26)基因是否是江苏淮阴A1555G突变相关母系遗传聋家系的核修饰基因
短句来源
     Conclusions The heterozygous 235delC mutation of the Cx26 gene may not modulate the severity of hearing loss associated with A1555G mutation and Cx26 gene is unlikely to be a modifier gene for hearing loss due to A1555G mitochondrial mutation in this Chinese family.
     结论235delC杂合性突变并不加重A1555G突变的致聋效应; Cx26基因也不是江苏淮阴母系遗传聋家系A1555G突变的核修饰基因
短句来源
     The phenotypical gene frequency was about 1/50000.Conclusion A specific modifier gene may induce the phenotypic changes of VWS and PPS, providing the molecular basis for clinical gene therapy and diagnosis in future.
     表型基因频率约为1/50000。 结论VanderWoude综合征表型变化可能是由于存在特定的修饰基因,进一步寻找修饰基因将为临床基因治疗和基因诊断提供分子基础。
短句来源
     Conclusions MYBPC3 was not only a predominant disease-causing gene, but also an important modifier gene for HCM.
     结论 MYBPC3不仅是HCM的主 要致病基因,而且可能是影响心肌肥厚程度的修饰基因
短句来源
     The purple plant marker (ABPl) was not significantly affected by modifier gene.
     由 ABPl等基因控制的紫色植株标记受修饰基因的影响比较小
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  “modifier gene”译为未确定词的双语例句
     MC4R gene could be a candidate modifier gene for canine body weight.
     统计分析显示犬MC4R基因型与体重显著相关,可以考虑将MC4R基因作为犬体重的候选基因。
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  相似匹配句对
     Gene Sequences
     基因序列(英文)
短句来源
     Rescue Gene
     抢救植物基因
短句来源
     The purple plant marker (ABPl) was not significantly affected by modifier gene.
     由 ABPl等基因控制的紫色植株标记受修饰基因的影响比较小
短句来源
     A recessive mutation of the modifier (m) gene eliminates the SI response in stigma.
     修饰基因的隐性突变可以消除柱头中的SI反应。
短句来源
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  modifier gene
The mouse mutations of Scn8a have also provided insight into the mode of inheritance of channelopathies, and led to the identification of a modifier gene that affects transcript splicing.
      
The results are consistent with the view that different kinds of selective pressures are being exerted on the enzyme's structural and modifier gene loci.
      
Here we examine this possibility with a series of haploid, two-locus models in which a modifier gene transforms TFT into unconditional altruism.
      
These results suggest that these varieties had a nullifier or modifier gene(s) or height promoting genes in the background controlling the height-reducing effect of Rht2.
      
The extra petals model involves a two gene switch, D1 and D2 to turn on the production of up to five extra petals and a modifier gene, Dm that accounts for an additional one to five extra petals.
      
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Based on the estimates of means,genetic variances,genetic coeffi-cients of variation,heritabilities,and correlations among characters of slfamilies of synthetic D.O.opaque-2 and Elite Synthetic opaque-2,therewas considerable genetic variability for the traits:degree of endospermtranslucence,kernel density,protein content,lysine and zein content,etc.Most of the traits were correlated with each other.The degree ofendosperm translucence and kernel density are two main indicators inmeasuring modifier gene...

Based on the estimates of means,genetic variances,genetic coeffi-cients of variation,heritabilities,and correlations among characters of slfamilies of synthetic D.O.opaque-2 and Elite Synthetic opaque-2,therewas considerable genetic variability for the traits:degree of endospermtranslucence,kernel density,protein content,lysine and zein content,etc.Most of the traits were correlated with each other.The degree ofendosperm translucence and kernel density are two main indicators inmeasuring modifier gene frequency of opaque-2 gene locus and have im-portant influence on the chemical components related to the proteinquantity and quality.Moreover,the degree of endosperm translucence is asimpler measurement,which has a larger genetic coefficient of variationand higher heritability.Therefore,its response to selection should begreater than to other traits.Endosperm translucence was related withother chemical components.In a breeding program of high lysine opaque-2 maize,the visual selection for endosperm translucence can be used asa main selection criterion in altering the opaque-2 modifier gene frequen-cy and some chemical components.

根据对高油抗病奥帕克-2玉米综合种(Syn DO O_2)和优良系奥帕克-2综合种(Elite Syn O_2)自交一代与胚乳有关性状的平均数、遗传方差、遗传变异系数、遗传力和性状相关等参数的估计和分析,发现两个群体的胚乳透明度、籽粒容重、蛋白质含量、赖氨酸和玉米醇溶蛋白含量等所有被测性状都存在着巨大的遗传变异,而且多数性状之间存在着不同程度直接或间接的遗传相关。胚乳透明度和籽粒容重是度量奥帕克-2(O_2)基因位点修饰基因频率变化的重要指标,并不同程度地影响到与蛋白质数量和质量有关的化学成分上。胚乳透明度度量简单,遗传变异系数大,遗传力高,因而选择效率数倍乃至数十倍于其它被测性状,并和那些测试复杂的化学成分关系密切,因而,在高赖氨酸的奥帕克-2玉米育种中,对胚乳透明度的目测选择,可以作为判断修饰基因频率和某些化学成分的主要依据。

O2 ( Opaque No. 2 ) corn generally yields 7-15% less than common corn of the same type, due to reduced kernel volume weight caused by starch endosperm. The way to solve this problem in breeding is to use the hard endosperm modifier( gene) and to select hard or semi-hard O2 inbred lines with higher kernel volume weight. Since different types of corn carry different amount of hard endosperm modifiers, only by screen -ing and utilizing parent materials rich in hard endosperm modifiers, through...

O2 ( Opaque No. 2 ) corn generally yields 7-15% less than common corn of the same type, due to reduced kernel volume weight caused by starch endosperm. The way to solve this problem in breeding is to use the hard endosperm modifier( gene) and to select hard or semi-hard O2 inbred lines with higher kernel volume weight. Since different types of corn carry different amount of hard endosperm modifiers, only by screen -ing and utilizing parent materials rich in hard endosperm modifiers, through the breeding method of self-cross or a combination of selfing and sib- mating with the selection objective of showing" corny cap" and "corny ring", can hard endosperm or semi-hard endosperm O2 corn inbred lines be effectively bred.

以O_2基因为遗传背景的高级氨酸玉米(简称O_2玉米)比普通玉米同型种一般产量低7—15%,这是粉质胚乳导致子粒容重降低的结果.育种上解决的途径是利用硬胚乳修饰基因选育子粒容重较高的硬胚乳或半硬胚乳O_2自交系.不同类型玉米携带的硬胚乳修饰基因贫富悬殊很大,只有筛选利用较丰富的亲本材料,通过自交或自交与姊妹交相结合的二环系选育方法,以早代子粒出现“角帽”和“角圈’为选择目标,才能有效地育成硬胚乳或半硬胚乳O_2玉米交系.

Eight rice varieties, Tetep, Ai-mei-zao 3, IR 36, IR 9782, Suwon 300, Hong-yang-ai 4, Ai-jiao-bai-mi-zi and Guo-ji-you-zhan 1 were studied for inheritance of their resistance to three blast races ( Pyrtcularia oryzae Cav. ) , ZB15, ZC3, ZC15 in 1985-198G. Three dominant genes governed resistance to three blast races respectively in Tetep, Ai-mei-zao 3, Hong-yang-ai 4, IR 36, and IR 9782. Resistant genes in Tetep, Ai-mei-zao 3, Hong-yang-ai 4 and IR 36 were all allelic, and three genes in them...

Eight rice varieties, Tetep, Ai-mei-zao 3, IR 36, IR 9782, Suwon 300, Hong-yang-ai 4, Ai-jiao-bai-mi-zi and Guo-ji-you-zhan 1 were studied for inheritance of their resistance to three blast races ( Pyrtcularia oryzae Cav. ) , ZB15, ZC3, ZC15 in 1985-198G. Three dominant genes governed resistance to three blast races respectively in Tetep, Ai-mei-zao 3, Hong-yang-ai 4, IR 36, and IR 9782. Resistant genes in Tetep, Ai-mei-zao 3, Hong-yang-ai 4 and IR 36 were all allelic, and three genes in them were gene 1, 4 and 9 respectively. Three genes in IR 9782 were gene 2, 6 and 12. Resistance to each of the three races in Suwon 300, Ai-jiao-bai-mi-zi and Guo-ji-you-zhan 1 was controlled by a single dominant or two duplicate dominant genes. The resistant genes respectively were gene 1, 4 and 5, 9 and 10 in Suwon 300, gene 1, 4 and 5, 10 and 11 in Ai-jiao-bai-mi-zi and gene 3, 7 and 8, 13 in Guo-ji-you-zhan 1. Resistant genes to the three races in the cultivars were linked. Resistance expression might be affected by some modifier genes, or there might be multiple alleles with different level of resistance on the same locus.

1985~1986年分析了Tetep等8个高抗稻瘟病品种对病菌小种ZB_(15)、ZC_3和ZC_(15)的抗性遗传,结果如下:Tetep、矮梅早3号、红阳矮4号、IR_(36)、IR_(9782)对每个小种的抗性都由1对显性抗性基因所控制.其中前4个品种的抗性基因都是等位的,对3个小种的抗性基因分别为基因1,4,9.IR_(9782)分别为基因2,6,12.水源300、矮脚白米仔和国际油占1号对3个小种的抗性由1对或2对显性重复抗性基因所控制.其中水源300对3个小种的抗性基因分别为基因1,4和5,9和10.矮脚白米仔分别为基因1,4和5,19和11.而国际油占1号分别为基因3,7和8,13.各抗病品种对不同小种的抗性基因间都存在着一定程度的连锁关系.抗性的表达可能受到一些修饰基因的影响,或者在同一基因位点上存在抗性程度不同的复等位基因.

 
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