Table 1.

Results of general linear mixed models testing the effects of species, soil moisture content and their interaction on variation of four physiological traits related to water-stress response in the Brachypodium species complex. The effect of genotype nested within species was incorporated as a random factor in the models. Significant values (P < 0.05) are in bold

Source of variation	Specific leaf area (m2 kg−1)			Electrolyte leakage (%)			Plant water content (%)			Proline (μmol g−1)
	d.f.	F	P	d.f.	F	P	d.f.	F	P	d.f.	F	P
Species (S)	2,125	1.40	0.251	2,146	0.09	0.91	2,137	6.22	0.0026	2,130	30.58	<0.0001
Soil moisture (T)	2,653	90.43	<0.0001	2,643	246.3	<0.0001	2,655	337.7	<0.0001	2,241	45.05	<0.0001
S × T	4,654	9.04	<0.0001	4,644	15.58	<0.0001	4,657	33.75	<0.0001	4,600	17.51	<0.0001
Random effects		Z	P		Z	P		Z	P		Z	P
Genotype (species)		4.95	<0.0001		4.16	<0.0001		2.96	0.003		4.48	<0.0001