Bulletin of the National Research Centre

Table 3 Effect of cysteine (0, 20, and 40 mg/l) on H₂O₂, MDA (nmol/g fresh wt), and antioxidant enzyme activity (SOD and CAT) (U/min/g fresh wt) of soybean plant irrigated with saline water (0, 3000, and 6000 mg/l). Results are means of two successive seasons

From: Physiological and biochemical responses of soybean (Glycine max L.) to cysteine application under sea salt stress

Treatment		H₂O₂	MDA	SOD	CAT
Salinity (mg/l)	Cysteine (mg/l)	(nmol/g FW)		(U/min/g FW)
0	0	36.10 e	19.38 e	41.96 h	63.30 c
	20	31.66 f	17.33 g	43.23 g	70.13 b
	40	28.74 g	15.35 h	44.46 f	78.41 a
3000	0	51.89 b	27.52 b	52.02 e	51.39 f
	20	35.59 e	21.31 d	55.30 d	58.07 d
	40	30.95 f	18.43 f	58.41 b	63.06 c
6000	0	61.83 a	34.68 a	57.18 c	41.97 h
	20	43.12 c	27.85 b	58.95 b	48.98 g
	40	38.43 d	24.68 c	61.34 a	53.95 e

Mean values (n = 3) in each column followed by a different letter are significantly different at ≤ 0.05 by Duncan’s multiple range test

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