为选育适合长江中游棉区和二熟制地区种植的优质油菜品种,1988 年起在引进的育种材料“瑞典油菜”中,采用选择育种法获得了符合目标要求的油菜新品种“湘农油571”。介绍了该品种的主要特征特性及产量表现,认为有明确的育种目的、在群体选择的基础上进行单株性状选择、减少套袋次数防止自交退化是获得成功的关键。 In order to breed high-quality varieties of rapeseed suitable for planting cotton in the middle reaches of the Yangtze River and second-cropping areas, a new rapeseed variety “Xiangnong Oil” 571 ". The main characteristics and yield performance of the breed were introduced. It is considered that the key to success is to have a clear breeding purpose, select the traits of the plants on the basis of the group selection, and reduce the number of bagging to prevent the selfing.