Table 2. General linear model results for genotype–environment association tests.

	T400			Depth			Area
Gene	β	t4,50	p	β	t4,50	p	β	t4,50	p
SWS1	0.16	4.09	<0.01	−0.02	−0.44	0.66	0.15	0.43	0.67
RH2	−0.02	−0.41	0.68	0.05	0.81	0.42	−1.26	−2.75	0.01
SWS2	-0.10	−3.36	<0.01	0.07	1.72	0.09	0.16	0.60	0.55
LWS	−0.06	−3.39	<0.01	0.04	1.97	0.06	0.00	0.02	0.99
	Clear- versus Blackwater			Depth			Area
Gene	β	t4,50	p	β	t4,50	p	β	t4,50	p
SWS1	2.44	2.46	0.02	0.03	0.52	0.60	−0.08	−0.22	0.83
RH2	−0.81	−0.68	0.50	0.06	0.91	0.37	−1.26	−2.82	0.01
SWS2	−2.91	−4.37	<0.01	0.06	1.79	0.08	0.23	0.92	0.36
LWS	−1.33	−3.50	<0.01	0.03	1.70	0.10	0.05	0.38	0.71

The upper half of the table shows test results with light spectrum as a continuous variable, the lower half shows test results with light spectrum as a categorical variable: clearwater versus blackwater (T400 ≤ 74%). Bold numbers indicate significant tests after Bonferroni-correction for multiple testing.