Figure 2.
Influence of duration of waterlogging and nitrogen application on the production of malonaldehyde (MDA) of rape leaves and roots under pot and field experiments. Capped bars above means represent ±SE of three replicates. Small alphabetical letters above mean denote the significant differences among treatment at P ≤ 0.05. The different application levels of nitrogen were N1 (0 kg ha−1), N2 (30 kg ha−1), N3 (60 kg ha−1) and N4 (90 kg ha−1). D0, refers to without waterlogging; D6, refers to waterlogging for 6 days and D9, refers to waterlogging for 9 days.