Figure 7.
Effect of cold acclimation on Glc-induced senescence in RIL 45, RIL 232, and RIL 310 with contrasting senescence phenotypes and their parental accessions (Bay-0 and Sha). Maximal photosynthetic efficiency (Fv/Fm) was determined by fluorescence imaging in plants grown on low-nitrogen medium without (LN; black symbols) or with (LNG; white symbols) addition of 2% Glc. Plants were either grown at 18°C (night)/22°C (day) cycles throughout the experiment (warm; circles) or were transferred to 5°C (cold; triangles) on day 11. Data are means and sd of at least three plants.