第2个回答 2013-03-28
Study on the effects of different concentrations of ABA on maize seedling leaf superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), malondialdehyde (MDA), electrical conductivity and free proline (pro) effect. The results showed that, spraying 15, 20, 25 μ mol/L ABA solution of Maize Seedling Leaves of SOD, POD and CAT activity increased significantly, to a certain extent, and reduced the content of MDA, but Pro had no obvious change. After the treatment, with the passage of time, in the days when spraying 3-5, SOD, POD, CAT contents reached the highest, the content of MDA also reached the lowest, indicating enhanced antioxidant ability of maize seedlings