Table 2.

Linear mixed-effects model outputs for RDPI values as the dependent variables. For each trait the F-statistic is shown in the top row and the associated P-value directly below. P-values <0.05 are in bold type. Trait plasticity in six models had significant relationships with seed source environment.

Trait	Fixed effects predictions
	F-test/P-value	Climatic water deficit	Summer precipitation	Winter precipitation	Available soil water storage	Emergence time	Seed mass
Above-ground
Height plasticity	F	0.0	2.5	0.0	0.9	1.2	0.3
	P	0.99	0.12	0.96	0.36	0.28	0.58
Canopy area plasticity	F	2.6	0.4	1.5	0.5	0.6	7.7
	P	0.11	0.51	0.23	0.49	0.45	0.01
Stem diameter plasticity	F	0.0	0.1	0.0	0.1	1.9	0.5
	P	0.97	0.76	0.93	0.73	0.17	0.49
Total above-ground biomass plasticity	F	3.9	16.5	4.2	0.1	0.8	3.1
	P	0.05	<0.001	0.04	0.74	0.36	0.08
Number of branches plasticity	F	0.2	9.9	1.0	1.6	0.2	0.0
	P	0.70	<0.001	0.33	0.21	0.70	0.98
Below-ground
Root biomass plasticity	F	7.1	7.1	3.2	2.3	2.9	0.1
	P	0.01	0.01	0.08	0.13	0.09	0.82
Root length plasticity	F	2.4	7.1	4.5	1.5	0.0	0.1
	P	0.13	0.03	0.06	0.24	0.99	0.81
Specific root length plasticity	F	0.3	1.1	1.1	0.6	1.8	0.4
	P	0.6	0.3	0.3	0.4	0.2	0.5
Root volume plasticity	F	0.00	2.96	2.31	0.45	1.40	0.74
	P	1.0	0.1	0.2	0.5	0.2	0.4
Root surface area plasticity	F	0.9	5.5	4.4	1.5	0.4	0.5
	P	0.35	0.04	0.06	0.24	0.54	0.46
Allocation ratios
Needle mass fraction plasticity	F	0.6	0.1	0.1	0.1	0.9	6.8
	P	0.43	0.71	0.81	0.72	0.33	0.01
Stem mass fraction plasticity	F	2.3	3.1	0.0	0.1	0.1	4.0
	P	0.13	0.08	0.92	0.75	0.77	0.05
Root mass fraction plasticity	F	0.4	0.3	2.5	0.5	0.8	3.4
	P	0.53	0.57	0.12	0.49	0.38	0.07