31 巻 (1987) 4 号 p. 411-414
The role of free amino acids in the mechanism of barley resistance to cereal aphids was studied. Total free amino acid concentrations in the leaves of the resistant barley lines tested were higher than those of the susceptible lines. Furthermore, the low value of some amino acids, but the high proportion of the aspragine fraction containing glutamic acid appeared to be associated with the resistance to the aphids.