Effect of Exogenous Organic Acids on Antioxidant Enzyme Activity of Buckw heat Seedlings under Salt Stress
YANG Hongbing
YANG Shiping
Abstract：The salt-sensitive buckwheat was used as the experimental material to explore the effects of different concentrations of malic acid and citric acid (0.2 ,0.4 ,0.6 ,0.8 and 1.0 mmol/L) on the antioxidant enzyme activity of buckwheat seedlings under salt stress condition .The results showed that the treatments of 0 .6 mmol/L malic acid and 0 .8 mmol/L citric acid could signifi-cantly increase the antioxidant enzyme activity of buckw heat leaves under salt stress ,especially for the citric acid treatment of 0 .8 mmol/L w hich resumed the POD activity of leaves close to the control level and made the SOD and CA T activities significantly higher than the control .It indica-ted that the optimal treating concentration of exogenous malic acid and citric acid was 0 .6 mmol/L and 0 .8 mmol/L ,respectively .
Keywords：buckw heat seedlingssalt stressmalic acidcitric acidantioxidant enzyme activity
Publication Date：2013-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 8-11 )