Table 2.

Statistical summary for repeated-measures ANOVA of variables measured throughout the experiments

Levels of significance were calculated from two-factor repeated measures ANOVA described in ‘Materials and methods’, *P<0.05, **P<0.01, and ***P<0.001, ns not significant (P>0.05).

Level	Variables	Species	Between effects		Within effects
			Treatment		Date		Date × Treatment
			F ndf,ddf	P	F ndf,ddf	P	F ndf,ddf	P
Plant	Water use (l H2O plant−1)	S. viridis	180.81,28	***	325.816,448	***	16.7316,448	***
		S. italica	187.02,29	***	119.318,522	***	69.0136,522	***
	GWC (g water g dry soil−1)	S. viridis	205.91,28	***	97.616,448	***	30.51,448	ns
		S. italica	312.32,29	***	45.12,29	***	5.23536,522	***
Leaf	C i/Ca	S. italica	33.672,16	***	0.4434,64	ns	1.4648,64	ns
	E (mmol−1 H2O m−2 s−1)	S. italica	73.52,18	***	4.075,98	ns	1.00810,98	ns
	g s (mmol−1 H2O m−2 s−1)	S. italica	60.82,18	***	1.8695,98	ns	1.64410,98	ns
	A net (µmol−1 CO2 m−2 s−1)	S. italica	9.8342,18	**	2.155,98	ns	0.98810,98	ns