Bulletin of the National Research Centre

Table 2 Effect of cysteine (0, 20, and 40 mg/l) on photosynthetic pigments (mg/g fresh weight) and proline content (mg/100 g dry weight) of soybean leaf tissues 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		Chlorophyll a	Chlorophyll b	Carotenoid	Proline
Salinity (mg/l)	Cysteine (mg/l)	Chlorophyll a	Chlorophyll b	Carotenoid	Proline
0	0	2.26 bc	0.72 ab	0.41 abcd	8.2 e
	20	2.66 ab	0.794 ab	0.485 abc	9.8 d
	40	3.20 a	1.19 a	0.42 abcd	10.7 d
3000	0	2.22 bc	0.36 bc	0.34 abcd	13.7 c
	20	2.61 ab	0.69 abc	0.52 a	14.2 bc
	40	2.54 ab	0.78 ab	0.49 ab	15.6 b
6000	0	1.75 c	0.15 bc	0.30 cd	17.6 a
	20	2.14 bc	0.35 bc	0.31 bcd	18.7 a
	40	2.04 bc	0.02 c	0.24 d	18.4 a

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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