Figure 5.
Temperature differential between the dry reference and either the flag leaf or the ear of two bread wheat varieties grown in glasshouse conditions (n = 4 cv. Alchemy and Hereward) subjected to a step change in light (from 100 to 1000 µmol m−2 s−1) and maintained under high light conditions for 30 min. Thermal images of a wheat ears (c, d) following the step increase in light intensity shows significant temperature differences in plants subjected to 10 min (c) or 25 min (d) of illumination, illustrating stomatal functioning in increased evaporative cooling.