Abstract:

Abstract: Effect of enhanced UV-B radiation on Glycyrrhiza uralensis, Glycyrrhiza glabra seed germination and the variety of catalase (CAT) activity when the seed germinated at 1d, 3d, 5d, 7d respectively. The results showed that the effect of enhanced UV-B radiation on the seed germination energy, germination percentage and germination index of the two types Glycyrrhizic seed was not significant,but significantly , it can inhibit the radicle and hypocotyl elongation and decrease radicle fresh weight, dry weight, hypocotyl fresh weight, dry weight of the two types Glycyrrhizic seed during germination. At early period of treatment, CAT activity of the two types Glycyrrhizic were significantly higher than control, but with the treatment time increased, CAT activity decreased.