Abstract: A set of 21 monosomic of Chinese spring was used to cross with Gaoyou503.Through observation of the chromosome behaviors in root cells and in pollen mother cells and the character of awness of F₁,it was found that there was a recessive gene of having awn on chromosome 2A of Gaoyou503.And another gene inhibiting the appearance of Spelta type spikes was also located on chromosome 5A(Just the same as Sears E.R.).