. 2018 May 29;9:716. doi: 10.3389/fpls.2018.00716

Table 3.

Effects of Si priming on the changes of K/Na ratio in alfalfa seedlings under alkaline stress.

Na₂CO₃ (mM)		Root	Stem	Leaf	Whole plant
0	-Si	20.88 ± 3.54^a	71.32 ± 14.50^a	66.06 ± 17.61^a	44.59 ± 8.51^a
	+Si	3.84 ± 0.67^b	41.78 ± 5.82^b	64.26 ± 8.74^a	13.28 ± 0.74^b
25	-Si	0.42 ± 0.05^b	2.50 ± 0.32^c	3.36 ± 0.39^b	2.20 ± 0.19^b
	+Si	0.32 ± 0.04^b	2.84 ± 0.52^c	4.86 ± 1.14^b	2.33 ± 0.32^b

-Si, pretreatment without Si; +Si, pretreatment with Si. Values are means ± SE, n = 25. Different letters denote significant difference (P < 0.05) based on Duncan’s test.