In order to investigate effect of spermidine(Spd),putrescine(Put)and ethylene(Eth)on quality of wheat grain,two wheat cultivars of‘Xinong 538' and‘Zhoumai 22' were used as materials.The results showed that spraying Spd at the early stage of grain filling,the contents of albumin,gliadin,glutenin and total protein of two cultivars were increased compared with the control,gluten content,sedimentation value and other processing quality indicators had different degrees of upward trend,amylose content was decreas...