Marc T. J. Johnson and Anurag A. Agrawal. 2005. Plant genotype and environment interact to shape a diverse arthropod community on evening primrose (Oenothera biennis). Ecology 86:874–885.

Appendix C (Table C1). Genetic and environmental effects on 14 plant traits.

	Variable	Effect	df	F/	P
Rosette traits
	Anthocyanin
		Genotype(G)	1	39.3	<0.001
	Leaves (May)
		G	1	70.9	<0.001
	Rosette width (April)
		G	1	301.1	<0.001
	Rosette width (May)
		G	1	28.0	<0.001
Traits associated with herbivore resistance
	Herbivory
		Habitat (H)	4,15	50.3	<0.001
		Microhab(M)[H]	1	18.3	<0.001
		G	1	4.9	0.013
		G × H	1	0	-
		G × M[H]	1	1.7	0.096
	Leaf toughness
		H	4,15	8.5	0.001
		M[H]	1	127.3	<0.001
		G	1	8.0	0.002
		G × H	1	1.1	0.15
		G × M[H]	1	0	-
	Spodoptera growth
		G	1	5.7	0.008
	Spodoptera mortality
		G	13	19.5	0.11
Reproductive phenology and traits measured from reproductive plants
	Bolting
		G	13	60.4	<0.001
	Biomass
		B	1	14.9	0.001
		G	1	29.9	<0.001
		G × M[H]	1	0.5	0.24
	Branches
		M	1	21.7	<0.001
		G	1	32.0	<0.001
		G × M[H]	1	0	-
	Flowering date
		B	1	0	-
		G	1	90.1	<0.001
		G × M[H]	1	2.1	0.073
	Stem diameter
		M	1	0	-
		G	1	18.7	<0.001
		G × M[H]	1	2.2	0.069
	Stem height
		M	1	0	-
		G	1	46.2	<0.001
		G × M[H]	1	0	-

   Notes: The effects included in the model and the degrees of freedom vary among plant traits depending on how data was collected (i.e., before or after transplanting, and whether data was from all plants or a subset of plants). We used F tests and Chi-squared tests to determine the statistical significance of fixed and random effects, respectively. We used a Chi-squared test of independence to determine the effect of plant genotype on bolting frequency and mortality of Spodoptera exigua. Dashes indicate undefined P values where the variance component was equal to 0.