Fig. 2.

Trade-off between constitutive and inducibility of resistance. The means of (A) S. littoralis and (B) P. brassicae larval mass when feeding on seven Arabidopsis accessions is shown. Plants were either left undamaged (constitutive) or previously induced by herbivores (open circles, dotted lines), or induced with methyl jasmonate (black dots, solid lines). Inducibility is the average difference of larval weight between the induced and constitutive conditions and, therefore, a negative value means induced resistance and the lowest values indicate the highest induction of resistance. Lines indicate a significant correlation, P <0.05. Letters next to the open circles or inside the black circles indicate the accessions’ names: N=Nd-1, M=Ms-0, K=Kin-0, S=Sha, Co=Col-0, H=HR-5, and C=C-24.