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突变育种
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  mutation breeding
     ACHIEVEMENTS AND TRENDS OF MUTATION BREEDING OF CROPS
     农作物突变育种的成就与趋势
短句来源
     The contents include the following topics:(1)conventional breeding,(2)improved backcross,(3)random intermating,(4)recurrent selection,(5)improved intermating,(6)selection index,(7) disruptive selection,(8)haploid breeding(semigamy),(9)biotechnology,(10)mutation breeding,and(11)hybrid vigor.
     内容包括:(1)常规育种、(2)改良回交、(3)随机互交、(4)轮回选择、(5)改良互交、(6)选择指数; (7)分裂选择、(8)单倍体育种(半配生殖)、(9)生物技术、(10)突变育种和(11)杂种优势利用等。
短句来源
     Problems of selection for main agronomic characters in the early generations,and significance of fertility of M1 plants for mutation breeding were discussed.
     探讨了早期世代的主要农艺性状选择处理问题以及M_1代不同孕性材料在突变育种上的意义。
短句来源
     In this paper, the world's chief achievements in the mutation breeding of crops, including the development of new crop mutation varieties and new mutants, have been summarized and discussed.
     本文阐述并分析了世界各国农作物突变育种所取得的主要成就,包括各种农作物突变新品种的育成和各类突变体的获得。 关于农作物突变新品种,分析了各国农作物突变育种的情况和特点;
短句来源
     The progress and achievements made in plant mutation breeding and application of isotopic tracer in Chinese agriculture are outlined.
     概述了中国农业植物突变育种与同位素示踪应用的成就与进展。
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  “突变育种”译为未确定词的双语例句
     Several types of low phytic acid mutants (named HIPin, HIPjn) were obtained from Xieqingzao B and Xiushui 110 , and some representative mutants were studied in the experiment.
     从协青早B,秀水110中获得了多种类型的低植酸突变体(分别用HIPin,HIPjn表示),提出了水稻HIP突变育种的方法和程序,并对部分代表性突变体的遗传特性,磷素特征,农艺性状进行了初步研究。
短句来源
     Haploid is a perfect material for somatic genetic study and mutant breeding.
     单倍体是体细胞遗传研究和突变育种的理想材料,花药和小孢子培养技术是获得单倍体的有效途径。
短句来源
     THE STUDY OF RADIATION INDUCED BREEDING ON Canna indica L.
     美人蕉辐照突变育种的研究
短句来源
     Studies on Breeding of Single Cell Mutagensis in Cut-flower Chrysanthemum
     切花菊单细胞突变育种研究
短句来源
     As a result, astaxanthin possesses a high market value both to the pharmaceutical and food industries. Phaffia rhodozyma is an important source of natural astaxanthin, in this thesis, methods for analysis carotenoids and procedures for extracting astaxanthin from Phaffia rhodozyma were optimized, method of mutant genesis and model of astaxanthin accumulation were investigated, media components and conditions for Phaffia rhodozyma cultivation were studied and fermentation economics was evaluated.
     法夫酵母是一种重要的天然虾青素资源,为了利用法夫酵母生产天然虾青素,本课题对法夫酵母虾青素的分析及提取方法、法夫酵母突变育种、虾青素的累积模型、培养基、培养条件进行了研究,并对高产虾青素的法夫酵母突变株的发酵经济学进行了初步的评价。
短句来源
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  相似匹配句对
     THE STUDY OF RADIATION INDUCED BREEDING ON Canna indica L.
     美人蕉辐照突变育种的研究
短句来源
     THE PROGRESS OF MUTATION BREEDING FOR ORNAMENTAL PLANTS IN CHINA
     中国花卉突变育种研究进展
短句来源
     A Quiet Mutation
     微妙突变
短句来源
     Plant Breeding by Genetic transformation
     转基因育种
短句来源
     P ig Breeding
     猪的育种
短句来源
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  mutation breeding
HEPE can be a new effective method for induced mutation breeding and deserves further research in the future.
      
Considerations on overcoming intrasomatic selection during mutation breeding of vegetatively propagated plants
      
The importance of these lines with regard to mutation breeding and evolution is discussed.
      
Increasing grain protein content of hard red winter wheat (Triticum aestivum L.) by mutation breeding
      
The mutation breeding program of alteration in plant type in two local Sorghum varieties resulted in several productive mutants of which 16 are far superior to the parents CRP, CBA and recommended hybrids.
      
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In our expeximents the primary roots of vicia faba have been used tostudy the induction of Chromosome aberration by treating with EA (ethylacetate) and EAA (ethylacetoacete). The results indicated that the yields of chromosome aberrations induced by EA and EAA were markedly higher than the treatment with EMS. The two rates of Chromosome aberrations were higher (11.2% and 7.6% respectively). When treated with EA ard EAA (to compare with pb) the rates of induction of Chromo ome aberration were higher (21.5 and...

In our expeximents the primary roots of vicia faba have been used tostudy the induction of Chromosome aberration by treating with EA (ethylacetate) and EAA (ethylacetoacete). The results indicated that the yields of chromosome aberrations induced by EA and EAA were markedly higher than the treatment with EMS. The two rates of Chromosome aberrations were higher (11.2% and 7.6% respectively). When treated with EA ard EAA (to compare with pb) the rates of induction of Chromo ome aberration were higher (21.5 and 16.5 times respectively). The results obtained indicated that EA and EAA were two Chemical mutagens of higher effects.

化学诱变剂在栽培作物中应用的数量,目前甚少。本实验用EA(ethylacetate)和EAA(ethylacetoacete)处理蚕豆根尖。实验结果表明,它们的诱发染色体畸变率均高于EMS诱发的畸变率,即分别提高为11.2%和7.6%。用磷酸缓冲液(pb)作对照处理,EA和EAA诱发染色体畸变率比pb处理分别高21.5和16.5倍。由此可见,EA和EAA是两种高效应的诱变剂。化学诱变剂的种类已经很多了,目前还是不断的增加。然而,化学诱变剂在栽培作物中的应用,现在只有少数诱变剂是真正有效的。化学诱变剂在栽培作物诱发突变育种上,现在尚未充分利用,其关键问题是缺少水溶性大,毒性小而诱发效率高的诱变剂。其次是如何掌握在个体发育的适当时期来处理,以便提高诱变率和M_2代诱变谱,这样便于选择对人有益的个体。周祉祯和Phan Phai等用烷化剂处理高等植物胚胎发育早期(合子、原胚)的细胞,成功的获得了提高诱变率扩大M_2代突变谱,进一步确立了个体发育原始阶段是对化学诱变剂处理的敏感时期,从而为化学诱变育种工作提供有效的方法。第三,是诱变谱的发生难于被人们所控制。因此筛选毒性小、易溶于水最有效的诱变剂,是本研究的...

化学诱变剂在栽培作物中应用的数量,目前甚少。本实验用EA(ethylacetate)和EAA(ethylacetoacete)处理蚕豆根尖。实验结果表明,它们的诱发染色体畸变率均高于EMS诱发的畸变率,即分别提高为11.2%和7.6%。用磷酸缓冲液(pb)作对照处理,EA和EAA诱发染色体畸变率比pb处理分别高21.5和16.5倍。由此可见,EA和EAA是两种高效应的诱变剂。化学诱变剂的种类已经很多了,目前还是不断的增加。然而,化学诱变剂在栽培作物中的应用,现在只有少数诱变剂是真正有效的。化学诱变剂在栽培作物诱发突变育种上,现在尚未充分利用,其关键问题是缺少水溶性大,毒性小而诱发效率高的诱变剂。其次是如何掌握在个体发育的适当时期来处理,以便提高诱变率和M_2代诱变谱,这样便于选择对人有益的个体。周祉祯和Phan Phai等用烷化剂处理高等植物胚胎发育早期(合子、原胚)的细胞,成功的获得了提高诱变率扩大M_2代突变谱,进一步确立了个体发育原始阶段是对化学诱变剂处理的敏感时期,从而为化学诱变育种工作提供有效的方法。第三,是诱变谱的发生难于被人们所控制。因此筛选毒性小、易溶于水最有效的诱变剂,是本研究的主要课题。现将实验结果报道如下。

In this paper, the world's chief achievements in the mutation breeding of crops, including the development of new crop mutation varieties and new mutants, have been summarized and discussed. As regards new crop mutation varieties, the conditions and characters of crop mutation breeding in various countries,the inducing mutation conditions of various crops, the different mutagens and the improved characters have been analysed.As regards various mutants, their types, such as short culm, early maturity,good quality,...

In this paper, the world's chief achievements in the mutation breeding of crops, including the development of new crop mutation varieties and new mutants, have been summarized and discussed. As regards new crop mutation varieties, the conditions and characters of crop mutation breeding in various countries,the inducing mutation conditions of various crops, the different mutagens and the improved characters have been analysed.As regards various mutants, their types, such as short culm, early maturity,good quality, resistanced to disease, plant morphology, especial character have been dealt with.

本文阐述并分析了世界各国农作物突变育种所取得的主要成就,包括各种农作物突变新品种的育成和各类突变体的获得。关于农作物突变新品种,分析了各国农作物突变育种的情况和特点;各种农作物的诱变情况;所采用的不同诱变手段以及所改良的性状。关于突变体,介绍了矮杆、早熟、优质、抗病、植物形态及其它特殊性状等六种类型。作者并从诱变育种目标、辐照材料的选择、突变体的间接利用、理化因素复合处理、无性繁殖植物的选育以及诱变与离体生物技术的结合等六个方面,简要讨论了突变育种的发展趋势。

Dry seeds of three soybean varieties were irradiated byaY ray with dosage of 4.lC/kg. The varieties irradiated were Fengshou No. 10, Donghong 74?403 and Heinong No. 26, and nonirradiated seeds of the corresponding variety was used as a control. The following genetic parameters of the nine agronomic characters were estimated including genotypic coefficient of variation, genotypic variance, broad sense heritability and genetic advance expected through selection. Three types of plant in M2 and M3 were used for...

Dry seeds of three soybean varieties were irradiated byaY ray with dosage of 4.lC/kg. The varieties irradiated were Fengshou No. 10, Donghong 74?403 and Heinong No. 26, and nonirradiated seeds of the corresponding variety was used as a control. The following genetic parameters of the nine agronomic characters were estimated including genotypic coefficient of variation, genotypic variance, broad sense heritability and genetic advance expected through selection. Three types of plant in M2 and M3 were used for the estimation of these parameters which comprise semisterility (MS), fertility (MF) in Mz and control(CK). The genetic advance expected through selection was compared with the actual effect of selection for date of maturity, seed weight per plant and 100 seed weight. The pattern of the genetic variation in .the early generations of the induced population was analysed. Problems of selection for main agronomic characters in the early generations, and significance of fertility of M, plants for mutation breeding were discussed.

以剂量为4.1C/kg的~(60)CO γ射线照射丰收10号、东风74-403和黑农26号等三个品种的风干种子,以没有经过照射处理的原始材料为对照,分析比较了来自M_1孕性正常(MF)和孕性较差(MS)植株衍生M_2、M_3两代群体九个农艺性状的遗传方差、遗传变异系数、广义遗传力和预期选择遗传进度,并对生育期,百粒重和单株产量的实际选择效果与预期选择进度进行了比较。研究了诱变群体早期世代的遗传变异规律。探讨了早期世代的主要农艺性状的选择处理问题以及M_1代不同孕性材料在突变育种上的意义。

 
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