... 回交育种法 backcross breeding; backcross method of breeding 回交杂种 backcross hybrid 回降原地 fall-back ...
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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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