傅廷栋1972年在由苏联引进的波兰春油菜品种波里玛(polima)中发现了19株自然雄性不育株(简称pol CMS)。1974年湖南农料院由前华中农学院引进波里玛不育株,选育出稳定的不育系湘矮A及其保持系湘矮B。崔德訢等在从意大利、瑞典引进的甘蓝型油菜品种和中国北方小白菜品种中找到了波里玛细胞质 In 1947, 19 natural male sterile plants (pol CMS) were found in the polima of the Polish spring rape introduced by the Soviet Union in 1972. In 1974 Hunan Agriculture and Forestry College by the former Huazhong Agricultural College introduced Polima sterile plants, breeding a stable sterile line Xiang short A and its maintenance department Xiang short. Cui Dexin, etc. in the introduction of Italy from Italy, the Brassica napus varieties and Chinese cabbage varieties found in North Carolina breast cytoplasm