Table 3. Effects of NaHS pretreatment on H₂O₂ contents of wheat seedling leaves and roots (μmol/g Fw)^{a, b}.

Tissue	Treatment	Days after drought stress
		0	1	2	3	4	5	6	7
Leaf	CK	1.57	1.45b	1.69b	1.55b	1.60c	1.91c	1.44c	1.35b
	PEG		2.32a	2.49a	2.65a	3.51a	3.79a	3.61a	2.91a
	NaHS+PEG		2.02b	1.88ab	2.26a	2.92b	3.25b	2.81b	2.77a
Root	CK	0.17	0.19b	0.22c	0.18b	0.17c	0.17c	0.19b	0.19b
	PEG		0.30a	0.37a	0.46a	0.59a	0.47a	0.35a	0.37a
	NaHS+PEG		0.21b	0.30b	0.38a	0.53b	0.33b	0.23b	0.24b

^a Within each column, the same lower case letter indicates no significant difference between treatments (P<0.05);

^b Fw, Fresh weight.