油菜是我国最为广泛种植的油料作物，提高单产是育种的主要目标，但随着人们生活水平的提高及食品饲料工业的发展，对油菜籽生产提出了新的要求：即必须发展以低芥酸、低流式为主要特征的优质油莱的生产。但由于优质与高产存在着遗传负相关，我国有成的单、双低品种在产量、抗 Rape is the most widely planted oilseed crop in China. Increasing yield is the main goal of breeding. However, with the improvement of people’s living standards and the development of food and feed industry, rapeseed production has put forward new requirements: that is, low erucic acid must be developed , Low-flow as the main feature of the production of high-quality oil Lai. However, due to the existence of high quality and high-yield genetic correlation, our single-and double-low varieties in the yield, resistance