Figure 6.

Photosynthesis rates of mature, nonsenescent leaves (leaves 6–8) of 32- to 37-d-old wild-type, Dara-5, and Dara-12 plants. a, Rates of wild-type (○), Dara-5 (▪), and Dara-12 (•) at different photon fluxes (50–500 μmol m⁻² s⁻¹) normalized to leaf area (μmol CO₂ m⁻² s⁻¹). Data points are means of measurements of 4 to 15 leaves from eight plants of each line. b, Rates at 500 μmol photons m⁻² s⁻¹ normalized to chlorophyll contents at site of the investigated leaf (μmol CO₂ g⁻¹ s⁻¹). In a data points are for 4 to 15 leaves from eight plants of each line; in b data are from nine leaves of three plants of each line (sd = 0.5–2.6 μmol m⁻² s⁻¹ for Dara-5 or as indicated). chl, Chlorophyll.