在干旱胁迫下,用不同浓度的壳聚糖溶液处理花生幼苗,连续处理5d后,测定过氧化氢酶(CAT)、过氧化物酶(POD)、超氧化物歧化酶(SOD)等花生保护酶活性的变化,结果显示:用壳聚糖处理的花生幼苗保护酶活性明显比不用壳聚糖处理的花生幼苗的酶活性高。随着干旱程度的加强,保护酶活性总体呈现下降的趋势。浓度为0.15g/L的壳聚糖溶液处理花生幼苗CAT、POD活性最高,而浓度0.20g/L壳聚糖溶液处理花生幼苗SOD活性最高。由此说明外源壳聚糖使得花生幼苗的保护酶活性得到了提高,使得花生具有了更强的抗逆性。 Peanut seedlings were treated with different concentrations of chitosan solution under drought stress for 5 days. The activities of catalase (CAT), peroxidase (POD) and superoxide dismutase The results showed that the protective enzyme activity of peanut seedlings treated with chitosan was significantly higher than that of the peanut seedlings without chitosan treatment. With the intensification of the degree of drought, the activity of protective enzymes generally showed a downward trend. The activity of CAT and POD of peanut seedlings treated with chitosan at a concentration of 0.15 g / L was the highest, while the activity of SOD was the highest at the concentration of 0.20 g / L chitosan solution. Thus exogenous chitosan makes peanut seedlings protective enzyme activity has been improved, making peanuts have a stronger resistance.