backcross

Dwarfing-sterile wheat was changed from winterness to springness by continue backcross.

利用连续回交手段将矮败小麦由冬性转育为春性。

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The Results of Using Simple Backcross Breeding Method on Resistant to Frogeye Leaf Spot of Soybean

简单回交方法在大豆抗灰斑病育种上应用效果分析

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A method to estimate the minimal sample size required for marker assisted backcross breeding when both foreground selection and background selection are conducted is proposed.

该文提出了一种估算在标记辅助回交育种中同时进行前景选择和背景选择所需群体大小的方法。

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Preliminary studies on the breeding of Cotton Cultivars by modified backcross

修饰回交法培育棉花品种的初步研究

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The present study proves the feasibility of applying MAS technology to the backcross breeding programs aiming at improving a single quantitative trait.

本研究证明了将标记辅助选择技术应用于旨在改良单个数量性状的回交育种的可行性。

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Male sterile line mainly came from the natural mutant, and then transformed sterile line and maintainer line by backcross.

其胞质雄性不育源大多来自自然突变，后经回交转育出不育系和保持系。

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Improved CMS line of Zao 49 was similar to its recurrent parent in economic traits with backcross generation, but it has severe selfed depression.

改良不育系从外部形态上接近轮回亲本，但是随着回交世代的增加衰退现象较为严重。

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Investigating the phenotypes of the advanced backcross segregation population and the near-isolated lines in different environments to analysis function of two BnFT genes together. 3.

在冬春性环境下，分别利用高世代回交分离群体及近等基因系初步解析C6染色体上2个BnFT在不同环境下对开花表型的作用。

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Two molecular methods were employed to successfully disclosed characters of the single hybrid zone: ( 1) this hybrid zone was composed of parental species, F1s, F2s and backcross derivatives;

我们通过分子测序和分子标记两种方法，揭示了该杂交区的性质：（1）该杂交区的构成是由亲本、F1代、F2代及回交后代组成；

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The method can be conveniently applied to practical backcross breeding programs.

该方法可以很方便地应用于实际的回交育种.

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Preliminary Study on Backcross Breeding of Ven Type Sterile Line of Wheat

Ven型小麦不育系的转育研究初报

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Improving the Resistance of Jinshan B-1, a Male Sterile Persistence Line of Rice with Good Quality, to Rice Blast via Marker-assisted Backcross Breeding

通过标记辅助回交育种改良优质水稻保持系金山B-1的稻瘟病抗性

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Molecular Marker-assisted Backcross Breeding of Maize Rf_3 NIL and Its Efficient Analysis

玉米Rf3近等基因系的分子标记辅助回交选育与效益分析

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In this experiment the method of backcross was used to evaluate genetic effects of Tal wheat cytoplasm on plant height, spike length, kernel number of the main spike, 1000-kernel weight etc.

利用回交方法，探讨了Tal小麦细胞质对F2株高、穗长、穗粒数、千粒重等主要农艺性状的遗传效应。

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Application of Backcross Method in Breeding Blast Resistant Hybrid Rice

回交法在杂交稻抗瘟育种中的应用

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Effects of Selection in Early Generation and Backcross on Yield and Quality of Bread Wheat

用早代选择和回交改良面包小麦产量和品质的研究

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New original seed production program "artifical backcross plant-line cycle method" was designed to solve the problems in production of cytoplasmic male sterility.

针对BT型不育系混杂退化原因，提出人工回交株系循环法不育系原种繁种程序。

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The variance component of cross and backcross generations of quantitative character controlled by multigenes is studied on condition of chromosome translocation.

研究了染色体易位情况下，多基因控制的数量性状杂交及回交世代的方差组成。

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There is no difference among different backcross generations.

不同的回交世代缺绿无差异；

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On early stage of each backcross generation we carry out foreground selection.

在每个回交世代早期实行前景选择，对经过了前景选择的中选单株在中后期实行背景选择和表型选择。

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While the backcross efficiency in combination of medium grain/ big grain type was not obvious until B_3F_1. The transgressive segregation appeared in all backcross generation.

中粒×大粒类型的组合回交至B3F1才有明显效应。回交各世代均存在超亲现象。

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The resistance to fluorine is affected by male-parent effect and there exists a difference between cross and backcross in non-female parent.

抗氟性还受父本的影响，表现非母体的正反交差异。

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Excellent line with marking character was selected from F_4, and this line's economic character was greatly influenced by backcross parent.

在F4，所选得具指示性状的优系，其经济性状受父本影响较大。

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Genetic Analyses of Salt Tolerance in an Advanced Backcross Population of Rice

水稻高世代回交导入系耐盐性的遗传研究

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Detection of Genetic System of Quantitative Traits Using Backcross and Selfing Families

植物数量性状遗传体系检测中回交或自交家系重复试验数据的分析方法

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Transfer of High Quality HMW-GS to Wheat Cultivars by Selective Backcross

利用选择性回交向小麦品种中转移优质HMW-GS的方法研究

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The related techniques in backcross breeding were also discussed.

对回交育种中的有关技术也进行了讨论。

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The results were verified by backcross inheritance experiment.

上述结果通过回交试验得到进一步验证。

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The two divergent strains were crossed to establish a conventional F2 segregating population and further a two-way recurrent selection and backcross ( RSB) population.

选择的两个酵母菌株杂交后生成传统的F2群体并随后建立了多世代的双向重复选择回交（recurrent selection and backcross，RSB）群体。

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A burro is carrying salt of one large bag backcross a river.

有一头驴子驮着一大袋子盐过河.

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