在EMS法构建的玉米骨干自交系昌7-2突变体文库中,发现了一个玉米无叶舌突变体,随后通过连续自交,获得了纯合一致、稳定遗传的无叶舌自交系,命名为Y43。该突变体穗上部叶片直冲,表现为无叶舌,其他农艺性状与受体一致。通过对Y43与昌7-2及海9-21的F1、F2、BC1分析,初步确定该突变体无叶舌性状受一对隐性单基因控制。 In the maize backbone inbred line Chang 7-2 mutant library constructed by EMS method, a non-leaf-tongue mutant of maize was found. Afterwards, successive inbred lines were used to obtain homozygous and stable inheritance of leafless inbred lines , Named Y43. The mutant spike on the upper leaves, showing no leaf tongue, the other agronomic traits consistent with the receptor. Through the analysis of F1, F2 and BC1 of Y43, Chang 7-2 and Hai 9-21, it was preliminarily determined that the non-leaflet trait of the mutant was controlled by a pair of recessive single genes.