Table 3. Effects of Si and SAR on the root FW and DW of rice seedlings.

SAR (pH)	Si (mM)	FW (g·stock-1)	DW (g·stock-1)
6.5	0	0.0856±0.0045 ef(100.00)	0.0098±0.0006 ef(100.00)
	1	0.0893±0.0030 e(104.32)	0.0101±0.0007 def(103.06)
	2	0.0889±0.0040 e(103.86)	0.0108±0.0006 cde(110.20)
	4	0.0754±0.0065 g(88.08)	0.0093±0.0010 fg(94.90)
4.0	0	0.0995±0.0049 d(116.24)	0.0116±0.0011 bc(118.37)
	1	0.1392±0.0036 a(162.62)	0.0157±0.0011 a(160.20)
	2	0.1233±0.0059 b(144.04)	0.0158±0.0009 a(161.22)
	4	0.0895±0.0041 e(104.56)	0.0114±0.0009 bcd(116.33)
3.0	0	0.0869±0.0050 e (101.52)	0.0102±0.0004 def(104.08)
	1	0.1151±0.0054 c(134.46)	0.0112±0.0014 bcd(114.29)
	2	0.1097±0.0069 c(128.15)	0.0123±0.0008 b(125.51)
	4	0.0889±0.0050 e(103.85)	0.0109±0.0004 cde(111.22)
2.0	0	0.0589±0.0053 h(68.81)	0.0081±0.0006 g(82.65)
	1	0.0677±0.0031 g(79.09)	0.0083±0.0007 g(84.69)
	2	0.0845±0.0045 ef(98.72)	0.0113±0.0008 bcd(115.31)
	4	0.0693±0.0050 g(80.96)	0.0102±0.0005 def(104.08)
F		33.781	19.259
p		0.000*	0.000*

Abbreviations: SAR, simulated acid rain; Si, silicon; FW, fresh weight; DW, dry weight.

The values are the means ± standard deviation, n = 3. The value in brackets is relative percentage (the ratio of absolute value to the control).

Significant differences (p<0.05) are indicated by different letters in the same column.

^* Significant at the 0.05 level.