回交亲本;
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。
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。
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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