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Table 2 Effects of seed soaking treatments with spermidine (Spd) or cyclohexylamine (CHA) for 12 h on seed germination energy (GE), germination percentage (GP), germination index (GI) and vigor index (VI) of sweet corn, Xiantian No.5 under normal temperature (25 °C)

From: Exogenous spermidine improves seed germination of sweet corn via involvement in phytohormone interactions, H2O2 and relevant gene expression

Treatment GE (%) GP (%) GI VI
Control 61 ± 2.31b 63 ± 2.31b 10.46 ± 0.71b 3.48 ± 0.39b
Spd 71 ± 2.31a 76 ± 1.02a 12.7 ± 0.71a 5.63 ± 0.44a
CHA 41 ± 4.62c 43 ± 2.31c 7.21 ± 1.10c 1.81 ± 0.29c
  1. Values were mean ± SE (n = 3). Different small letter (s) following the values indicated significant difference (p < 0.05, Tukey’s HSD) among treatments. Control, seeds soaked in distill water as a control; Spd, seeds soaked in 0.9 mM spermidine solution; CHA, seeds soaked in 16 mM cyclohexylamine solution