Table 1.

Three-way ANOVA for growth characters of endophyte-infected (E+) or uninfected (E−) Festuca arundinacea under various CO₂ and nitrogen conditions.

	Plant height		Tiller number		Leaf number		Maximum net photosynthetic rate		Shoot biomass		Root biomass		Root:Shoot ratio		Leaf carbon concentration		Leaf nitrogen concentration		C:N ratio
	F	P	F	P	F	P	F	P	F	P	F	P	F	P	F	P	F	P	F	P
Endophyte (E)	0.10	0.76	39.94	0.00	33.76	0.00	3.25	0.08	24.27	0.00	2.59	0.12	0.16	0.69	4.22	0.05	12.84	0.00	11.97	0.00
CO2 (C)	0.96	0.34	15.96	0.00	11.19	0.00	347.42	0.00	433.83	0.00	11.03	0.00	2.03	0.16	0.13	0.72	148.34	0.00	177.49	0.00
Nitrogen (N)	329.10	0.00	453.03	0.00	307.93	0.00	276.61	0.00	4722.89	0.00	216.40	0.00	0.50	0.48	143.99	0.00	143.33	0.00	117.76	0.00
E × C	0.50	0.48	5.75	0.02	1.52	0.23	6.65	0.02	13.55	0.00	0.16	0.69	0.21	0.65	0.14	0.71	3.27	0.08	0.21	0.65
E × N	0.04	0.85	0.05	0.83	0.28	0.60	13.16	0.00	8.72	0.01	2.38	0.13	0.90	0.35	1.71	0.20	0.67	0.42	2.99	0.09
C × N	0.31	0.58	14.82	0.00	9.43	0.00	0.03	0.87	269.27	0.00	8.33	0.01	0.03	0.86	0.51	0.48	33.33	0.00	0.01	0.91
E × C × N	0.11	0.75	1.19	0.28	0.52	0.47	4.12	0.05	7.65	0.01	0.84	0.37	1.58	0.22	0.94	0.34	4.74	0.04	2.65	0.11

Significant P-values are in bold.