Table 1. ANOVA analyses on the effects of the O₃ level, whitefly herbivory and tomato genotypes on the volatile emission rate of tomato plants.

	Measured Indices F(P)
Factor	Monoterpene volatile emissions	GLVsa	Aldehyde volatiles	VOCsb
O3	<0.001	<0.001	<0.001	<0.001
Herbivory	<0.001	<0.001	<0.001	<0.001
Genotype	<0.001	<0.001	<0.001	<0.001
O3 × herbivory	<0.001	<0.001	0.41	<0.001
O3 × genotype	<0.001	0.19	0.2	<0.001
Herbivory × genotype	<0.001	<0.001	<0.001	<0.001
O3 × herbivory × genotype	<0.001	0.5	0.03	<0.001

^aGreen leaf volatiles.

^bTotal amount of volatile organic compounds.