Abstract: With a disign of 6×6 diallel crossing,genetic analyses for the content of protein and 16 kinds of amino acids in wheat grain were conducted, and the genetic components were evaluated and the genes distribution of each characters was revealed. The results indicated that the mean squares were in significant level and the heredity of protein and 16 kinds of amino acids was dominated not only by the additive gene effects, but also by non-additive gene effects. The genetic model of all characters went with the additive-dominant one except the histidine. The additive component D and the dominant component H, for each characterwere in significant level. The mean dominant value H1/D indicated that the heredity of a few characters (protein, phenylalanine) was dominated by over-dominant genes, while of some of the rest characters (glycine,alanine etc. ),by complete dominant genes, and of others (lysine, serine etc. ), by incomplete dominant genes. There were more recessive genes than dominant ones in the control for the heredity of protein and lysine though there was no significant difference in gene frequency. As for many other characters, the dominant gene frequency was higher than the recessive one.

Key words: Wheat, Protein, Amino acids, Genetic model