Fig. 5
From: Maize plants can enter a standby mode to cope with chilling stress
Effect of chilling on CO2 assimilation, leaf sugar content and SLA in two maize hybrids. The 7-day chilling treatment (10 °C day/4 °C night) was applied at about the 6-VL stage. Analyses were performed on the 4th leaf blade at the end of the chilling treatment for treated plants or 1 day after the beginning of the treatment for control plants in order to compare plants at the same developmental stage. a CO2 assimilation measured in the light (400 μmol m−2 s−1 PAR) or in the dark at 25 °C, 380 μmol CO2 mol−1. Data are means ± sd of 15–20 plants (5–10 individuals in 2 experiments). b SLA, soluble sugars and starch quantification. Pie chart area is proportional to sugar amount (white disc in the center = 1 μg cm−2 scale). Different colours represent glucose (pink), fructose (green), sucrose (blue) and starch (purple). Data are means ± sd of 24 plants (8 individuals in 3 experiments). For SLA determination, data are means ± sd of 55–60 plants (15–20 individuals in 3 experiments)