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Low energy ion beams are known to have stimulation effects on plant generationand to improve plants’ intrinsic quality.In the present study,the growth and physiological in-dex of licorice implanted with 0,8,10,12 and 14×(2.6×10~(15))ions/cm~2 were investigated underwell-watered and drought-stress conditions.The results showed that a proper dose of ion implan-tation was particularly efficient in stimulating the licorice growth and improving the plant biomasssignificantly in both the well-watered and drought-stress conditions.The physiological results oflicorice measured by leaf water potential,lipid oxidation,soluble protein and antioxidant systemshowed a significant correlation between ion implantation and water regime except for leaf waterpotential.Therefore,the study indicated that ion implantation can enhance licorice’s droughttolerance by increasing the activity of superoxide dismutase(SOD),catalase(CAT)and DPPH(1,1-dipheny1-2-picrylhydrazyl)radical scavenging ability to lower oxidative damage to lipids inplants.Ion beam implantation,therefore,provides an alternative method to enhance licoricedrought tolerance.
Low energy ion beams are known to have stimulation effects on plant generation and to improve plants’ intrinsic quality. In the present study, the growth and physiological in-dex of licorice implanted with 0, 8, 10, 12 and 14 × (2.6 × 10 ~ (15) ions / cm ~ 2 were investigated underwell-watered and drought-stress conditions. The results showed that a proper dose of ion implan-tation was particularly efficient in stimulating the licorice growth and improving the plant biomass signalsignantly in both the well -watered and drought-stress conditions. The physiological results of licorice measured by leaf water potential, lipid oxidation, soluble protein and antioxidant system showed a significant correlation between ion implantation and water regime except for leaf water potential. Before the study indicated that ion implantation can enhance licorice’s droughttolerance by increasing the activity of superoxide dismutase (SOD), catalase (CAT) and DPPH (1,1-dipheny1-2-picrylhydrazyl) radical scavenging ability to lower ox idative damage to lipids inplants. Ion beam implantation, therefore, provides an alternative method to enhance licoricedrought tolerance.