目前，开展优质杂交种的选育已经成为油菜育种的主攻方向。
At present, double low hybrid breeding is the major aspect of rapeseed breeding.
这个不育系的育性表现比较稳定，有可能用于无花粉观赏向日葵杂交种的生产。
Its sterility shows stable and is a potential recourse to produce pollen-free ornamental sunflower hybrid.
利用年均种植面积较大杂交种的亲本自交系共计74份材料，用改进的模型评价品质性状的遗传变异及相关分析。
The genetic variation and correlation of quality characters of 74 inbreed lines which were parents of elite hybridize varieties that were grew widely.
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