本文分析测定了我国12个高粱品种的含氰势(HCN-P)及幼苗生长过程中含氰势(HCN-P)的变化,并研究了种子蛋白及酪氨酸含量与含氰势(HCN-P)的关系。结果表明,高粱的含氰势以4天幼苗为最高。种子中蛋白质和酪氨酸含量与含氰势有正相关关系,种于中蛋白质及酪氨酸含量增加,幼苗中具有较高的 HCN-P 值。高含氰势品种种子蛋白和酪氨酸的增加,主要是由于醇溶谷蛋白含量的增加引起的。 In this paper, the changes of cyanide potential (HCN-P) and the content of HCN-P in 12 sorghum cultivars grown in China were analyzed. The effects of seed protein, tyrosine content and HCN -P) relationship. The results showed that sorghum containing cyanide potential to 4 days of seedlings as the highest. The content of protein and tyrosine in seeds was positively correlated with the content of cyanide. The content of protein and tyrosine in seeds increased, and the value of HCN-P in seedlings was higher. The increase of seed protein and tyrosine in high cyanide potential varieties is mainly caused by the increase of prolamin content.