Table 1.

Summary of the ANOVA results demonstrating the effects of plant genotype, initial aphid density, and their interaction on population growth rates of the aphid on individual plants in the single genotype, mixed genotype and mixed-genotype-with-cage treatment.

treatment	factor	d.f.	F	p
single genotype	genotype (G)	9,74	1.08	0.38
	initial density (I)	1,74	23.34	<0.0001
	G × I	9,74	6.88	<0.001
mixed genotype	genotype (G)	9,30	4.49	<0.001
	initial density (I)	1,30	31.27	<0.0001
	G × I	9,30	3.59	0.003
mixed-genotype-	genotype (G)	9,30	0.79	0.63
with-cage	initial density (I)	1,30	0	0.99
	G × I	9,30	0.95	0.50