玉米超长穗自交系的选育王河成，段运平，石红卫，李凌雨（山西省农业科学院作物遗传研究所太原０３００３１）自交系单一性状粗穗和长穗互补，是组配大穗型玉米单交种的一个重要原则。目前我国玉米育种利用的骨干自交系少而集中，遗传基础狭窄，特别是长穗骨干自交系的贫... Breeding of Super Long Ear Inbred Lines of Maize Wang Haicheng, Duan Yunping, Shi Hongwei, Li Lingyu (Institute of Crop Genetics, Shanxi Academy of Agricultural Sciences, Taiyuan 030031) An important principle of species. At present, the backbone of inbred lines used in maize breeding in our country is few and concentrated, and the genetic basis is narrow, especially the inbred lines of long-spike stems are poor.