Table 3.

Linear mixed model analyses of relative fitness for data sets partitioned by stressor and ancestor

Data set	Model	Random effect	d.f.	N		F‐value	P‐value
2344 phosphate	Relative fitness = Stress level × Genotype	Plate	14	315	Stress level	1.11	0.403
					Genotype	4.14	< 0.001
					Stress level × Genotype	1.21	0.147
2931 phosphate	Relative fitness = Stress level × Genotype	Plate	14	294	Stress level	0.28	0.936
					Genotype	2.18	0.012
					Stress level × Genotype	0.97	0.547
2344 NaCl	Relative fitness = Stress level × Genotype	Plate	14	315	Stress level	6.71	0.002
					Genotype	4.64	< 0.001
					Stress level × Genotype	1.60	0.004
2931 NaCl	Relative fitness = Stress level × Genotype	Plate	14	294	Stress level	0.76	0.614
					Genotype	6.91	< 0.001
					Stress level × Genotype	0.92	0.656