Table I.

Hypocotyl lengths, within the conditions of this experiment, can be described by a linear function with main effect and interaction terms summing to define the slope of the line

Estimates of coefficients for significant factors and interaction terms derived from such a linear mixed effects model are shown here. Effects on hypocotyl length are given in relation to the base state of wild type in far-red light at the lowest fluence rate of light and lowest concentration of BL. Any significant differences in estimates resulting from differences in genotype are listed below each term. Terms directly addressing the relationship between light and brassinosteroid perception are shown in bold.

Source of Variation	Coefficient	SE	P Value
Fluence rate	-2.94	0.08	<0.0001
Fluence rate × BRI1OX	0.46	0.11	<0.0001
Fluence rate × phyA	2.58	0.13	<0.0001
Fluence rate × phyB	0.63	0.11	<0.0001
BL	-0.59	0.06	<0.0001
BL × phyB	0.33	0.07	<0.0001
Red	-4.76	0.47	<0.0001
Red × BRI1OX	1.18	0.51	0.0194
Fluence rate × BL	0.15	0.01	<0.0001
Fluence rate × BL × phyA	-0.08	0.02	<0.0001
Fluence rate × BL × phyB	-0.07	0.02	<0.0001
BL × red	0.27	0.05	<0.0001
BL × red × BRI1OX	-0.15	0.05	0.0011
BL × red × phyA	0.39	0.06	<0.0001
BL × red × phyB	-0.31	0.05	<0.0001
Red × fluence rate	1.40	0.09	<0.0001
Red × fluence rate × phyA	-2.08	0.11	<0.0001
Red × fluence rate × phyB	0.98	0.08	<0.0001
Red × fluence rate × BL	-0.07	0.01	<0.0001