Fig. 3.

CH₄-induced alleviation of seed germination inhibition caused by PEG stress was sensitive to PTIO and cPTIO. Mung bean seeds presoaked with solutions containing 1.3 mM CH₄, 100 μM SNP, 100 μM old SNP, 500 μM PTIO, 500 μM cPTIO, alone or their combinations for 12 h, were then shifted to 20% PEG-6000 for another 48 h. Afterwards, germination rates were determined. Treatment with distilled water was regarded as control (Con). Data are means ± SE of three independent experiments with at least three replicates for each. Bars with different letters denote significant difference at P < 0.05 according to Duncan’s multiple range test