Table 1.

Morpho-physiological features of alfalfa after exposure to 0, 50, 100, and 200 mM NaCl with (+2 mM Si) or without (−2 mM Si) Silicon for 14 d.

Treatment NaCl (mM)	Si(2 mM)	Shoot DW (g·plant−1)	Reduction(%)	Root DW(g·plant−1)	Reduction(%)	Stem extension rate(mm·d−1)	Reduction(%)
0	−Si	15.53 ± 0.72b	–	4.83 ± 0.65ab	–	15.54 ± 0.68a	–
	+Si	16.18 ± 0.19a	–	5.14 ± 0.12a	–	15.71 ± 0.58a	–
50	−Si	13.34 ± 0.22d	14.12	4.50 ± 0.19b	6.83	11.43 ± 0.82bc	26.5
	+Si	14.40 ± 0.38c	7.28	4.60 ± 0.22b	4.71	12.32 ± 0.90b	20.7
100	−Si	9.93 ± 0.39e	36.05	3.93 ± 0.26c	18.74	9.64 ± 0.92d	37.9
	+Si	12.96 ± 0.42d	16.53	4.27 ± 0.08b	11.5	11.07 ± 0.41c	28.6
200	−Si	6.20 ± 0.30g	60.08	2.51 ± 0.22d	48.03	6.79 ± 0.92e	56.3
	+Si	7.41 ± 0.39f	52.29	2.83 ± 0.06d	41.51	7.32 ± 0.68e	52.9

Values are expressed as mean ± SD. The different letters indicate significant differences between treatments (p < 0.05). DW, dry weight.