TABLE 3.

Loadings for each compound in Principal components 1 and 2 (PC 1, PC 2) from the PCAs that examined variation in total absolute terpene chemistry (see Figures 3, 4) among Norway spruce (P. abies) clones treated with 0 and 50 mM MeJA.

Compound	No fungus exposure		Exposure to fungus
	PC1	PC2	PC1	PC2
(−)-α-Pinene	0.31	−0.20	0.33	−0.15
(+)-α-Pinene	0.24	−0.04	0.22	−0.13
Camphene	0.28	−0.16	0.22	−0.14
(+)-β-Pinene	0.04	−0.14	0.06	0.33
(−)-β-Pinene	0.28	−0.14	0.31	−0.05
Myrcene	0.34	0.03	0.34	−0.09
(+)-3-Carene	0.10	−0.48	0.22	−0.27
(−)-Limonene	0.20	−0.27	0.26	−0.18
(+)-Limonene	0.28	−0.35	0.31	−0.27
β-Phellandrene	0.29	−0.15	0.31	−0.05
Thunbergene	0.31	0.32	0.26	0.47
Calarene	0.32	0.32	0.27	0.34
Neocembrene	0.29	0.38	0.19	0.36
Geranyllinalool	0.08	−0.04	0.06	0.40
Thunbergol	0.27	0.32	0.29	0.10

Separate analyses were conducted for plants not exposed (No fungus exposure) and those exposed to E. polonica (Exposure to fungus).