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Table 4 Superoxide dismutase (SOD) activities in the leaves of Ife brown (IFB) and Ife bpc (IBPC) under NaCl and Na2SO4 salinity stress

From: Antioxidant enzymes and non-enzymatic antioxidants as defense mechanism of salinity stress in cowpea (Vigna unguiculata L. Walp)—Ife brown and Ife bpc

Treatment Conc (dS/m) Biochemical parameters (mean ± SE)
IFB SOD (%) IFBPC SOD (%)
NaCl 5.00 38.87 ± 0.18b 45.24 ± 1.37d
  10.00 42.11 ± 0.27c 42.86 ± 0.01cd
  15.00 48.81 ± 0.20d 28.67 ± 0.06b
Na2SO4 5.00 36.16 ± 2.38c 38.19 ± 1.37ab
  10.00 45.76 ± 0.19d 26.59 ± 1.38a
  15.00 51.10 ± 0.01e 21.06 ± 0.02c
Distilled H2O 0.0 51.50 ± 2.89e 46.03 ± 4.20d
  1. Means followed by different letters in the column are significantly different (P < 0.05) from one another using Duncan’s new multiple range test (DNMRT)