Figure 1.

Effect of temperature, CO₂, ozone and water availability on grain mineral content (carbon (A), nitrogen (B), iron (C), potassium (D), magnesium (E), manganese (F), phosphorus (G) and zinc (H)) of three European wheat varieties. Treatments: A = Ambient CO2, lower temperature settings and no O3 addition (control). A.EpO3 = Ambient CO2, lower temperature settings and episodic O3 addition. A.O3 = Ambient CO2, lower temperature settings and chronic O3 addition. C.EpO3 = High CO2, lower temperature settings and episodic O3 addition. CT = High CO2, higher temperature settings, and no O3 addition. CT.EpO3 = High CO2, higher temperature settings and episodic O3 addition. CT.O3 = High CO2, higher temperature settings and chronic O3 addition. T.EpO3 = Ambient CO2, higher temperature and episodic O3 addition. WLA.O3: Ambient CO2, lower temperature settings and chronic O3 addition (i.e., A.O3), in water-limited condition. WLCT.O3 = High CO2, higher temperature settings and chronic O3 addition (i.e., CT.O3), in water-limited condition. ns, *, ** and *** mean non-significant, significant at 0.05, 0.01 and 0.001, respectively, Dunnett's test with treatment A as control.