. 2021 Dec 25;11(1):55. doi: 10.3390/plants11010055

Table 2.

Antioxidant activities (APX, GR, CAT, SOD) and the concentrations of reactive oxygen species (H₂O₂, O₂⁻) in fully expanded young leaves of two barley cultivars (Milford and Sahin-91) grown in the nutrient solution under low (0.04 mM K+) and adequate (0.8 mM K+) K supply without (−PEG) and with (+PEG) PEG-induced water deficit. Means of samples taken between 11 and 19 DAO ± SE are shown (n = 18).

K Supply	PEG	APX	GR	CAT	SOD	H₂O₂	O₂⁻
(mM K+)		(µmol H₂O₂ g⁻¹ FW min⁻¹)	(µmol NADPH g⁻¹ FW min⁻¹)	(mmol H₂O₂ g⁻¹ FW min⁻¹)	(U g⁻¹ FW)	(µmol g⁻¹ FW)	(nmol g⁻¹ FW)
		Milford
0.04	-	1.94 ± 0.17	0.25 ± 0.01	1.26 ± 0.07	138.9 ± 2.2	0.94 ± 0.06	2.63 ± 0.28
0.8	-	1.59 ± 0.18	0.26 ± 0.02	1.52 ± 0.05	121.6 ± 1.9	0.67 ± 0.04	0.61 ± 0.05
0.04	+	9.64 ± 1.20	1.63 ± 0.21	2.21 ± 0.15	146.9 ± 2.7	1.26 ± 0.10	6.34 ± 0.46
0.8	+	3.57 ± 0.42	0.44 ± 0.02	1.88 ± 0.10	111.0 ± 2.0	1.01 ± 0.06	1.83 ± 0.43
		Sahin-91
0.04	-	1.54 ± 0.12	0.27 ± 0.02	0.78 ± 0.03	109.0 ± 3.7	1.36 ± 0.10	2.56 ± 0.41
0.8	-	1.53 ± 0.13	0.23 ± 0.02	1.17 ± 0.05	98.7 ± 2.8	0.67 ± 0.05	0.58 ± 0.06
0.04	+	4.76 ± 0.31	0.66 ± 0.03	0.90 ± 0.09	125.7 ± 2.8	1.49 ± 0.10	3.79 ± 0.54
0.8	+	2.46 ± 0.22	0.53 ± 0.05	1.71 ± 0.10	103.6 ± 3.5	0.81 ± 0.05	3.86 ± 0.57