Table 1.

Pearson correlations between damage by the pine weevil, as a proxy of resistance, and the concentration of total plant secondary metabolites (PSM) in the stem phloem of 102 genotypes from 10 populations, representing the main distribution range of maritime pine.

Plant secondary metabolites	Constitutive (C) (N = 89)		Inducibility (MJ – C) (N = 96)
	Pearson r	P-value	Pearson r	P-value
Terpenes
Total monoterpenes	-0.05	0.610	0.08	0.410
Total sesquiterpenes	-0.13	0.240	0.12	0.253
Total volatile terpenes	-0.23	0.032	0.11	0.302
Total diterpenes	-0.01	0.946	0.17	0.087
Phenolics
Total eugenols	0.17	0.114	-0.19	0.068
Total flavonoids	∼0.00	0.993	-0.33	0.001
Total hydroxycinnamic acids	-0.12	0.250	-0.24	0.017
Total lignans	-0.15	0.156	-0.36	<0.001

Analyses were performed separately for constitutive total PSM (C), and for the inducibility of total PSM (MJ – C) after methyl-jasmonate induction. Significant correlations are highlighted in bold after adjustment for multiple testing correction using false discovery rate (FDR) for p ≤ 0.05 (Benjamini and Hochberg, 1995). Data used for correlations were obtained from mixed models accounting for population structure and relative kinship among individuals. Genotypic sample size of each defensive state is indicated in brackets. Due to the fact that some clonal replicates (control or MJ-induced) were not available for several genotypes, data points in the inducibility dataset were slightly lower than the original number of genotypes used.