Table 2.

General Linear Mixed Models of the effects of light intensity (L), soil phosphorus (P), jasmonic acid treatment (J), and AMF (M), on leaf traits P. lanceolata plants and on growth and consumption parameters of Mamestra brassicae caterpillars feeding on these plants.

Source	Ndf	Caterpillar traits				Leaf traits
		RGR	RCR	ECI	Leaf P	Leaf N	Aucubin	Catalpol	SLA	LDMC
		F	F	F	F	F	F	F	F	F
L	1	1.4	0.1	0.3	35.5***	17.0**	2.4	0.1	6.5*	30.7***
P	1	2.4	10.0**	2.1	95.7***	35.2***	0.6	6.1*	10.5**	48.4***
J	1	5.0*	2.2	0.0	6.2*	7.5**	1.4	1.9	1.6	0.4
M	1	1.3	1.7	0.7	2.8+	2.3	2.5	0.4	14.9***	0.7
LxP	1	1.6	0.0	1.0	0.0	1.7	0.7	0.4	0.5	3.8+
LxJ	1	0.0	0.4	0.1	0.6	0.1	0.1	0.0	0.6	0.4
PxJ	1	0.0	0.7	1.5	7.7**	0.1	1.9	0.6	0.0	0.3
LxM	1	0.2	1.3	0.9	12.4***	4.6*	0.7	0.0	0.2	3.3+
PxM	1	0.0	0.5	0.9	9.8**	4.9*	0.3	0.4	0.5	6.1*
JxM	1	0.1	4.0*	4.8*	0.1	1.0	0.0	0.0	0.2	0.1
LxPxJ	1	0.1	0.5	0.2	0.0	0.0	1.5	0.0	0.3	0.4
LxPxM	1	1.6	0.0	1.0	1.0	0.0	0.1	0.1	1.6	0.1
LxJxM	1	1.6	3.1+	0.0	1.0	0.0	0.3	0.0	0.2	0.0
PxJxM	1	0.3	2.9+	0.3	1.0	1.4	0.6	1.8	0.9	2.6
LxPxJxM	1	0.6	0.0	0.7	0.7	0.4	0.1	0.3	0.3	0.9

Data for bioassay 1 (7-week old plants). Values are F-values. Values in bold indicate significant effects (p < 0.05).

⁺p < 0.10.

^*p < 0.05.

^**p < 0.01.

^***p < 0.001.

Ndf, numerator degrees of freedom. Denominator degrees of freedom (Dnf) are eight for effects of light. Dnf for other factors are: 111 for RGR, 98 for RCR and RCR, 67 for leaf N and P, 112 for leaf aucubin and catalpol, SLA, and LDMC. RGR, relative growth rate; RCR, relative consumption rate; ECI, efficiency of conversion of ingested food; leaf N, leaf nitrogen concentration; leaf P, leaf phosphorus concentration; SLA, specific leaf area; and LDMC, leaf dry matter content (% dry weight).