Figure 6.

Temperature response curves for A in leaf 5 of well-watered tobacco. Plants were grown at ACO₂ (A) or ECO₂ (B). Data are presented for the wild type (WT; gray circles), B7 (black triangles), B8 (black squares), RI9 (white triangles), and RI29 (white squares). Measurements were done at growth irradiance (700 PPFD), growth C_a (i.e. 400 or 1,000 µmol mol⁻¹), and the temperature indicated. Each experiment included single individuals for each plant line and growth condition. Data are means ± se of two independent experiments (n = 2).