Table 4.

Principal component matrixes for Quercus macrocarpa and Q. prinus seedlings in experiment 3.

Variable	Component
	Q. macrocarpa				Q. prinus
	1	2	3	4	1	2	3
Height	0.90	0.13	−0.26	−0.13	0.14	0.91	−0.26
Leaf area	0.87	0.30	−0.17	−0.17	0.26	0.83	−0.31
Root area	0.40	−0.20	−0.71	0.46	0.80	−0.07	−0.26
Dry weight shoot	0.57	−0.54	0.52	0.31	0.74	0.39	0.50
Root	0.01	−0.89	−0.01	−0.36	0.67	−0.26	0.56
Total plant	0.46	−0.75	−0.42	0.12	0.79	0.06	0.60
Water use seedling⁻¹	0.54	0.64	−0.09	−0.01	−0.37	0.88	0.13
cm⁻¹ height	−0.84	0.26	0.03	0.17	−0.65	−0.08	0.55
cm⁻² leaf area	−0.82	0.08	0.09	0.21	−0.78	0.01	0.55
cm⁻² root area	−0.19	0.54	0.65	−0.40	−0.69	0.64	0.23
Shoot-to-root ratio	0.43	0.45	0.47	0.59	0.40	0.70	0.24
Cumulative percent of total variation explained	37.7	62.9	78.4	88.3	37.6	68.6	85.8