Table 1.

Photosynthetic pigments in leaves of salt-treated and water-stressed D. viscosa and I. crithmoides plants.

Photosynthetic pigment	Period of treatment (weeks)	Treatments (mM NaCl)	Species		Treatment	Species
			D. viscosa	I. crithmoides		D. viscosa	I. crithmoides
Chl a (mg g−1 DW)	3	0	28.33 ± 4.57c*	12.66 ± 1.64B*	Control	28.33 ± 4.57b*	12.66 ± 1.64B*
		150	18.43 ± 3.63ab*	13.04 ± 0.48B*	WS	16.84 ± 1.58a*	10.78 ± 1.99A*
		300	23.16 ± 2.50b*	13.22 ± 1.06B*
		450	16.12 ± 2.508a*	11.64 ± 0.60B*
		600	13.93 ± 2.23a*	6.56 ± 0.31A*
	6	0	26.89 ± 4.33d*	13.11 ± 1.43C*
		150	22.54 ± 1.55d*	11.17 ± 1.56C*
		300	18.05 ± 1.25c*	5.83 ± 1.20AB*
		450	15.76 ± 0.35b*	5.89 ± 0.44A*
		600	7.52 ± 1.16a	6.62 ± 0.07B
Chl b (mg g−1 DW)	3	0	13.77 ± 2.56c*	5.72 ± 0.70C*	Control	13.77 ± 2.56b*	5.72 ± 0.70B*
		150	5.68 ± 0.39a	5.22 ± 0.64BC	WS	5.62 ± 0.98a*	3.58 ± 0.69A*
		300	7.97 ± 0.98b*	5.15 ± 0.87BC*
		450	6.74 ± 0.90ab*	4.43 ± 0.48B*
		600	6.31 ± 1.49ab*	2.45 ± 0.53A*
	6	0	12.07 ± 2.55d*	5.68 ± 0.57C*
		150	9.33 ± 0.71d*	6.01 ± 0.98C
		300	7.30 ± 0.28c*	2.77 ± 0.04A*
		450	5.50 ± 0.26b*	2.91 ± 0.44A*
		600	2.95 ± 0.34a*	3.90 ± 0.24B*
Caro (mg g−1 DW)	3	0	4.02 ± 0.30d	3.19 ± 0.71C	Control	4.02 ± 0.30b	3.19 ± 0.71A
		150	3.39 ± 0.20c*	2.32 ± 0.21B*	WS	1.86 ± 0.37a	2.65 ± 0.41A
		300	2.74 ± 0.07b	2.40 ± 0.45BC
		450	2.60 ± 0.18b*	1.98 ± 0.17B*
		600	1.42 ± 0.28a	1.24 ± 0.13A
	6	0	4.30 ± 0.29c*	3.30 ± 0.37D*
		150	1.91 ± 0.29ab*	2.97 ± 0.35CD*
		300	1.42 ± 0.36a*	2.70 ± 0.07C*
		450	2.41 ± 0.26b	2.10 ± 0.05B
		600	1.78 ± 0.43ab	1.65 ± 0.02A

Chlorophyll a (Chl a), chlorophyll b (Chl b), and total carotenoids (Caro) contents, after 3-week and 6-week treatments with the indicated salt concentrations, and after 3 weeks of water stress. Values shown are means ± SD (n = 5). For each pigment, different letters (lowercase for D. viscosa and capital letters for I. crithmoides) in a column indicate significant differences between treatments according to Tukey test (α = 0.05). Asterisks (

^*) indicate significant differences between the two species for the same treatment. WS, water stress.