Figure 2.

Change of mineral content of three European wheat varieties under effect of ozone alone (A) and combined with high CO₂ and elevated temperature (B). 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. 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.