Relative changes of central carbohydrates after exposure to heat (H) and heat/high light (HHL). Fold-change of (a) starch amount, (b) sucrose concentration, (c) hexoses concentration (glucose + fructose), and (d) hexose phosphate concentration (glucose 6-P + fructose 6-P) as compared to control (i.e., a fold-change of 1 indicates no change compared to control). Blue bars: Ct-1, orange bars: Rsch-4. Asterisks indicate significance (ANOVA), grey asterisks for comparison between accessions, black asterisks for comparison of treatment to control: * p < 0.05; ** p < 0.01; *** p < 0.001. Bars represent mean values ± SD (n = 5).