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1989年,周宽基在小麦品种间组合87(212)的F_4代杂种后代中,发现一雄性不育材料。后经广泛的测交、杂交和回交,F_2、F_3代育性分离比例调查及系谱分析,多年多代北(兰州)南(云南)异地种植育性表现观察等常规遗传分析,初步确定该雄性不育属单隐性核基因突变,具有普通小麦细胞质,不育性遗传稳定、彻底,不受环境变化的影响。暂命名为“兰州核不育”,简称LZ。1991～1994年,根据
In 1989, Zhou Guangji found a male sterile material among F_4 hybrid progeny of combination 87 (212) of wheat varieties. After extensive tests, crossbreeding and crossbreeding, F_2, F_3 fertility segregation ratio survey and pedigree analysis, many generations of North (Lanzhou) South (Yunnan) off-site cultivation of fertility observation and other conventional genetic analysis, initially identified the Male sterility is a single recessive nuclear gene mutation, with common wheat cytoplasm, sterility genetically stable, thorough, free from environmental changes. Temporarily named “Lanzhou nuclear infertility”, referred to as LZ. From 1991 to 1994, according to