Question

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研究了喷施不同浓度ABA对玉米幼苗叶片超氧化物歧化酶（SOD）、过氧化物酶（POD）、过氧化氢酶（CAT）、丙二醛（MDA）、电导率及游离脯氨酸（pro）的影响。结果表明，外源喷施15、20、25μmol/L的ABA溶液后玉米幼苗叶片的SOD、POD和CAT活性增强显著，在一定程度上降低了MDA的含量，但Pro的变化不明显。在处理后，随着时间的推移，在喷施3-5天时，SOD、POD、CAT含量都达到最高，MDA含量也达到相对最低，说明玉米幼苗抗氧化能力增强。

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Answer 1

The effects of ABA sprayed in different concentration on the SOD, POD, CAT, MDA, conductivity and Pro (free proline) of maize seedling blades are studied. The result showed that after spraying ABA solution of 15, 20 and 25 μmol/L, the liveliness of SOD, POD and CAT increased notably and MDA content decreased to a certain extent while no significant change noted in Pro. As time goes by, the contents of SOD, POD and CAT reached the peak while the content of CAT reached the bottom after the spraying for 3 to 5 days, which suggested a high/strong oxidation resistance of the maize seedling.

Answer 2

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Answer 3

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