Table 1.

The contributions of Na⁺, K⁺, betaine, and free proline to leaf osmotic potential (Ψs) of Atriplex canescens seedlings under different NaCl treatments for 10 days.

NaCl treatments (mM)	Contribution of Na+ to Ψs (%)	Contribution of K+ to Ψs (%)	Contribution of betaine to Ψs (%)	Contribution of free proline to Ψs (%)
0	2.0 ± 0.3c	33.8 ± 5.2a	6.0 ± 0.3b	0.3 ± 0.1c
100	32.4 ± 3b	26.0 ± 3.2ab	6.4 ± 0.3b	0.3 ± 0.1c
200	34.7 ± 5.5b	19.9 ± 2.4b	7.3 ± 0.4a	2.8 ± 0.2b
400	48.8 ± 4.2a	9.2 ± 1.1c	8.1 ± 0.3a	3.8 ± 0.2a

Values are mean ± SE (n = 8). Columns with different letters indicate significant differences at P < 0.05 (Duncan test).