Table 5.

Effect of different silicon (1.0 mM) and PEG-6000 (20%) treatments on glutathione, ascorbic acid, proline and soluble sugar contents in the leaves of wheat seedlings (Triticum aestivum L. cv. Longchun 8139)

Treatment	Glutathione (µmol g−1 DW)	Ascorbic acid (µmol g−1 DW)	Proline (µg g−1 DW)	Soluble sugar (mg g−1 DW)
CK	906.3 ± 13.24 aa	28.9 ± 1.2 a	677.6 ± 25.10 b	62.5 ± 2.12 c
Si	903.3 ± 11.45 a	21.9 ± 1.5 b	635.5 ± 29.20 b	69.1 ± 2.08 c
PEG	720.2 ± 5.34 b	13.9 ± 1.76 c	827.3 ± 30.36 a	93.8 ± 3.10 b
PEG + Si	722.0 ± 8.45 b	19.7 ± 1.56 b	773.9 ± 25.84 a	127.0 ± 7.69 a

^a Within each column, means followed by the same small letters are not significantly different according to the LSD test at P ≤ 0.05