Table 5.

Changes in leaf chlorophyll content (SPAD unit), CO₂ assimilation rate (A, μmol CO₂ m⁻² s⁻¹), stomatal conductance (g_s, mol m⁻² s⁻¹), partial pressures of CO₂ in inside of leaf and in the air (C_i:C_a), transpiration (T, mmol m⁻² s⁻¹), and transpiration efficiency (TE, μmol CO₂ mmol⁻¹ H₂O) of four varieties of barley grown in control conditions or Cl^–-dominant soil, Na⁺-dominant soil, and NaCl-dominant soil. Plants were grown for 49 d and values are from the last measurement at day 45. Values are means (n=3).

	Chlorophyll content	A	gs	Ci:Ca	T	TE
Barque73
Control	39.0	21.78	0.83	0.78	4.86	4.48
Na+-soil	44.1	17.40	0.61	0.75	3.45	5.04
Cl–-soil	38.5	19.55	0.75	0.76	4.15	4.71
NaCl-soil	38.0	14.40	0.53	0.70	3.22	4.47
Clipper
Control	38.7	20.24	0.80	0.74	4.51	4.49
Na+-soil	46.1	16.25	0.60	0.71	3.35	4.85
Cl–-soil	30.5	15.51	0.61	0.58	3.46	4.48
NaCl-soil	33.7	11.14	0.41	0.55	2.60	4.28
Sahara
Control	41.0	21.23	0.85	0.77	4.73	4.49
Na+-soil	46.0	18.91	0.76	0.75	3.95	4.79
Cl–-soil	32.5	16.29	0.65	0.64	3.61	4.51
NaCl-soil	35.3	14.62	0.56	0.65	2.89	5.06
Tadmor
Control	39.3	20.70	0.83	0.74	4.62	4.48
Na+-soil	44.7	15.87	0.58	0.71	3.06	5.18
Cl–-soil	25.7	12.19	0.47	0.44	2.50	4.88
NaCl-soil	27.3	8.18	0.31	0.45	1.73	4.74
LSD0.05 (Genotype×Treatment)	2.36	0.800	0.045	0.040	0.095	0.255