Fig. 5.

Response of biomass and ears (or tillers) to eCO₂ and HS across the life cycle of wheat cv. Scout. Response of total biomass (a) and spike number (b) to eCO₂ and HS at three time points; before HS (B), after recovery from HS (R), and at the final harvest after maturity (M). Ambient and elevated CO₂-grown plants are depicted in black and grey, respectively. Solid and dotted lines represent control and heat-stressed plants, respectively. Filled and open circles represent control and heat-stressed plants, respectively. Vertical black dotted lines show the timing of HS. Symbols are means per plant ±SE (n=9–10).