v.使回交
n.回交
Backcross with c ommon wheat had completely no seed set. 用普通小麦回交，未获得回交后代。
The resistant level was declined with increasing of backcross generations. (2)在回交后代中，抗性水平逐代降低。
New forms of Josta, backcrossed to the black currant parent, may be better than original types. 水牛生产醋栗果媲美更丰富的空间较小
Dwarfing-sterile wheat was changed from winterness to springness by continue backcross. 摘要利用连续回交手段将矮败小麦由冬性转育为春性。
Methods The mice were bred in different ways,including crossbreed,backcross and intercross. 方法采用杂交、回交、互交的方法进行培育;
