Sequential Assays of 4 Amino Acids in Grains of Wheat,Rye,and of Their Hybrid. ∗

Summary

Wheat, rye, and a wheat-rye hybrid have been analyzed for leucine. lysine, methionine, and phenylalanine. The assays have included total, N-terminal, N-penulti-mate, and C-terminal proportions of these amino acids. In all cases, only lysine is N-terminal. C-Terminal assays permit the conclusion that this lysine is all terminal, and not free. The proportions of total lysine and N-lysine in the hybrid are intermediate between the values in the parent strains. The comparable result for leucine is not intermediate.