Fig. 7.

CO₂ assimilation/internal CO₂ (A/Ci) curves of plants of WT and the la cry^s mutant of pea, grown under positive and negative DIF. Before the measurements the plants were grown at negative DIF (13 °C/21 °C DT/NT) and positive DIF (21 °C/13 °C) for 12 d. The measurements were performed at a leaf temperature of 23 °C for both DIF treatments, and 6–7 measurements are plotted for each leaf and DIF treatment.