Table 1.

Summary of the analysis of variance performed to test for the effects of the covariate ‘Initial size’ (I) factors ‘Time’ (T, repeated-measure factor), growth [CO₂] (C), water availability (W), genotype (G) and their interactions on the studied variables

Variable	Factor/covariate
	I	T	C	W	G	C×W	C×G	W×G	C×W×G
	(1/29)	(2/58)	(1/29)	(1/29)	(3/29)	(1/29)	(3/29)	(3/29)	(3/29)
Agr	7·49***	8·74**	251·56***	37·60***	0·88	4·02	0·87	3·35*	0·05
ggr	3·64	10·28***	1·59	51·84***	3·66*	1·58	1·07	1·67	0·33
iWUE	3·19	3·74*	32·96***	30·53***	1·39	6·91*	0·38	0·11	0·40
SR800-400	2·21	7·58**	9·53**	46·84***	0·72	0·29	1·45	2·52	0·65
ΦPSII	0·68	1·42	5·54*	2·16	0·97	0·02	0·40	1·63	0·36
Fv/Fm	0·99	0·51	10·06**	0·77	0·60	0·45	0·47	1·05	0·12
SLA	23·23***	3·17*	25·25***	1·75	4·80**	0·01	1·85	0·30	2·29
RGRb	3·90	–	0·04	0·01	0·13	1·41	1·67	1·61	1·32
RGRwd	1·66	–	0·02	6·34*	1·42	0·47	1·48	2·79	0·54
Ψπ	0·11	–	1·01	54·99***	1·02	1·01	2·81	0·53	0·33
Nm	0·68	–	11·44**	1·44	6·57**	1·40	0·20	0·52	1·36
Na	3·42	–	8·62**	2·21	10·17***	0·63	0·33	0·47	1·97
PNUE	6·70*	–	31·86***	45·07***	6·99**	0·85	2·02	3·88**	1·19
Δ13C	3·02	–	11·86**	22·55***	0·12	0·367	0·22	1·50	1·19
δ18O	0·34	–	1·18	12·37**	2·38	3·61	0·61	0·25	0·54

Fisher’s F values and significance levels (indicated by asterisks) are shown. Degrees of freedom are provided in parentheses.

^*0·01 ≤ P < 0·05;

^**0·001 ≤ P < 0·01;

^***P ≤ 0·001.