Table 1.

Hydrogen peroxide content and CATA1 gene expression in axes isolated from dormant and non-dormant sunflower seeds before imbibition (dry) or after 8 and 16 h of imbibition on water at 10°C.

Duration of imbibition (h)	H2O2 content (µmol g DW-1)		CATA1 expression (relative units)
	dormant	non-dormant	dormant	non-dormant
0 (dry)	1.37 ± 0.21	2.10 ± 0.14	100	46.0
8	1.43 ± 0.35	4.52 ± 0.65	48.0	44.6
16	1.50 ± 0.22	8.22 ± 1.26	59.3	114

Hydrogen peroxide content and CATA1 gene expression in axes isolated from dormant and non-dormant sunflower seeds before imbibition (dry) or after 8 and 16 h of imbibition on water at 10°C.. Values are means of five replicates ± SD (H2O2). CATA1 expression was determined by northern blot and is % of the expression determined in dry dormant seeds (means of three measurements).