也可用雌性F1与隐性纯合雄性亲本回交。
F1 females could be backcrossed to the male homozygous recessive parent.
配合力分析表明：一般配合力较好的父本290-1和雄性不育系240可作为优良的杂交育种亲本；
The analysis of combining ability showed that Father plant 290-1 and Male sterile line 240 which had high GCA could be regarded as good crossing parents.
雄性不育是油菜杂种优势利用的一条重要途径，在杂种优势利用中亲本选配是配制强优势组合、有效利用油菜杂种优势的关键环节。
Male sterility is an important way of utilizing rapeseed heterosis. In the breeding of hybrids, how to choose parents is a key step to gain strong heterosis and efficiently use heterosis.
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