玉米自交系苏80-1,由单交种鲁原单5号一代种,连续五代选株自交育成,是高抗大、小斑病,配合力高的优良自交系.1978年春,利用鲁原单5号等26个优良杂交种及其部分F_2为基本材料,进行自交系选育,一年就地春秋两代选株自交.S_0～S_2根据田间目测和室内考种,淘汰农艺性状、抗病性差的自交株、自交果 Maize inbred line Su 80-1, by a single cross-breeding Luyuan a single No. 5, five consecutive generations of selected self-bred, is highly resistant to large, small spot disease, with high combining fine inbred lines .1978 spring, 26 excellent hybrids such as Luyuan No.5 and some F_2 were selected as the basic materials for selfing inbred lines and selfing in spring and autumn for one year in situ.S 0 ~ S 2 According to field test and indoor test, Traits, poor resistance to self-self-self-self-fruit