Fig. 3. The effects of heat stress [control (ct), 2 (2d), and 4 (4d) DHS] on dry weight accumulation of pericarp (A and C) and pedicel (B and D) of developing maize kernels of growth chamber- (A and B) and field-grown plants (C and D). Values are means, compared by LSD at 5% (*) or 1% (**) levels of significance.