Variation in pinewood nematode susceptibility among Pinus pinaster Ait. provenances from the Iberian Peninsula and France

Table 3 Results of mixed model analysis for the indicator of plant physiological stress and plant damage. F ratios and significance levels of the effects considered for the different variables measured after B. xylophilus inoculation

Variables	Experiment			Provenance			Provenance × experiment			Provenance × DAI (exp)			DAI (exp)
Variables	DF	F	p > F	DF	F	p > F	DF	F	p > F	DF	F	p > F	DF	F	p > F
Wilting	2, 49	7.58	< 0.0001	5, 245	2.14	0.0224	10, 245	30.15	< 0.0001		7.17^b	< 0.0001		4.85^b	< 0.0001
Mortality	2, 49	5.50	< 0.0001	5, 245	2.16	0.0206	10, 245	27.89	< 0.0001		7.45^b	< 0.0001		4.90^b	< 0.0001
Oleoresin flow ratio	1, 36	20.39	< 0.0001	5, 36	1.38	0.2559	5, 36	1.08	0.3878	25, 90	0.95	0.5376	5, 90	5.90	< 0.0001
Water potential (MPa)	1, 36	58.76	< 0.0001	5, 36	1.37	0.2591	5, 36	1.36	0.2606	10, 36	1.97	0.0067	2, 36	43.30	< 0.0001
Chlorophyll fluorescence (Fv/fm)^a	1, 36	35.22	< 0.0001	5, 36	0.91	0.4850	5, 36	2.61	0.0413	40, 144	1.33	0.1144	8, 144	21.75	< 0.0001

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