Fig. 2
From: Maize plants can enter a standby mode to cope with chilling stress
Effect of chilling on leaf growth in two maize hybrids. The 7-day chilling treatment (10 °C day/4 °C night) was applied at about the 6-VL stage (grey zone in a and b). a Leaf appearance rate. Decimal leaf stage was measured on 15–20 plants per genotype in each treatment; results shown are means ± sd for 7 experiments. * indicates significant growth during chilling period (slope different from 0). b Leaf elongation rate of leaves 4, 5 and 6. Data are means ± sd of 15 plants for one experiment. c Final length of leaves 4, 5 and 6. Data are means ± sd of 90–106 plants (10–20 individuals in 6 experiments). * indicates significant effect of chilling (P < 0.05). d Leaf length deficit in chilling-treated plants, as % of controls