Table 2.

Sugar content and activity of enzymes involved in their metabolism in wheat grains under drought stress and Olive mill wastewater treatment.

Parameter	Control	Stress	OMWW	OMWW + Stress
Total Sugar	4.85 ± 0.55 b	5.61 ± 0.46 ab	5.14 ± 0.43 ab	6.05 ± 0.45 a
Total soluble sugar	3.02 ± 0.29 a	3.51 ± 0.35 a	2.89 ± 0.41 a	2.97 ± 0.33 a
Fructose	0.43 ± 0.05 b	0.51 ± 0.06 ab	0.50 ± 0.04 b	0.63 ± 0.06 a
Glucose	0.29 ± 0.04 a	0.32 ± 0.03 a	0.30 ± 0.04 a	0.37 ± 0.04 a
Sucrose	1.05 ± 0.15 a	1.21 ± 0.21 a	1.09 ± 0.15 a	1.04 ± 0.18 a
Starch	505.81 ± 35.21 b	519.84 ± 44.12 ab	654.84 ± 0.65 a	546.69 ± 0.61 ab
Invertase	1.44 ± 0.16 a	1.38 ± 0.18 a	1.32 ± 0.19 a	1.24 ± 0.21 a
Sucrose phosphte synthase	0.29 ± 0.03 a	0.33 ± 0.04 a	0.30 ± 0.04 a	0.37 ± 0.05 a
Amylase	0.63 ± 0.08 b	0.58 ± 0.08 b	0.69 ± 0.09 ab	0.88 ± 0.10 a
Starch Synthase	30.96 ± 2.88 b	32.44 ± 3.21 b	39.00 ± 3.02 a	42.75 ± 3.67 a

At a 5% probability level, the Tukey HSD test reveals that grain parameters sharing the same letter(s) is not significantly different.