Fig. 4From: Enhancing xanthine dehydrogenase activity is an effective way to delay leaf senescence and increase rice yieldDifferences in reactive oxygen metabolism in wild-type and transgenic lines at different growth stages. a H2O2 content. b MDA content. The seedling, full heading and maturation stages of rice were grown to 14d, 60d, and 90d after sowing, respectively. The penultimate leaves were selected at seedling stage, and sword leaves are selected for the determination of H2O2 and MDA content at full heading and maturation stages. FW, fresh weight. Values are means±SEM, n = 5. Significant differences (P < 0.05) are denoted by different lowercase lettersBack to article page