FIGURE 7.

Activities of the enzymes scavenging reactive oxygen species in barley embryos during germination. (A) Activities of catalase and superoxide dismutase (total SOD, Mn-SOD, and Cu/Zn-SOD); (B) Activities of the enzymes of ascorbate-glutathione cycle (APX – ascorbate peroxidase, DHAR – dehydroascorbate reductase; MDHAR – monodehydroascorbate reductase; GR – glutathione reductase). Units of catalase are millimoles H₂O₂ min^–1; units of SOD are 50% reduction of superoxide formation per minute. The symbols are the same as in Figure 2.