v.使回交
n.回交
Backcross with c ommon wheat had completely no seed set. 用普通小麥回交，未獲得回交后代。
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。
Dwarfing-sterile wheat was changed from winterness to springness by continue backcross. 摘要利用連續(xù)回交手段將矮敗小麥由冬性轉(zhuǎn)育為春性。
Methods The mice were bred in different ways,including crossbreed,backcross and intercross. 方法采用雜交、回交、互交的方法進(jìn)行培育;
Backcross A cross between an individual and an individual of the original parent generation. 回交：雜交產(chǎn)生的子一代個(gè)體再與其親本進(jìn)行交配的方式。
