backcross

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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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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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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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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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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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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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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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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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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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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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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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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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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