以小麦品种宁春4号为指示材料，研究了浓度为100、300、500 μmol/L的CuCl2对小麦幼苗抗氧化酶(CAT、POD和APX)活性的影响。结果表明，随着Cu2+胁迫浓度的增加，小麦幼苗叶片过氧化氢酶(CAT)和过氧化物酶(POD)活性显著上升，且有相似的变化趋势，在Cu2+胁迫浓度为300 μmol/L时活性最高。抗坏血酸过氧化物酶(APX)活性在100 μmol/L浓度下降低，由300 μmol/L增加到500 μmol/L时先升高后降低。

The Ningchun 4 wheat was used as a material in this test， which studies the influence of the activity on wheat seedling antioxidant enzymes (CAT， POD and APX)， under the different concentration (100 μmol/L， 300 μmol/L， 500 μmol/L、) CuCl2 . The results showed that the increase of Cu stress concentration， the activity of wheat seedling leaves catalase (CAT) and peroxidase(POD) rises significantly， and have a similar changing trend . When the concentration of enzymatic is 300 μmol/L， enzymatic is the most active . But when ascorbic acid peroxidase (APX) is 100， μmol/L the activity of enzyme is living lower . And the concentration of enzymatic was 1 300 μmol/L and 500 μmol/L， it increases firstly， and then decreases .

S512.1