^(60)Co-γ射线辐射对红掌几种酶活性及MDA含量的影响

Effect of Radiation of ^(60)Co-γ Ray on Some Enzyme Activities and MDA Content of Anthurium andraeanum

试验研究了用不同剂量60Co-γ射线辐射处理整株红掌后,其叶片中几种酶活性及MDA含量的变化。结果表明:辐射后丙二醛(MDA)含量,超氧物歧化酶(SOD),过氧化物酶(POD)活性与对照相比均有增加,且最大值均出现于50 Gy处理时;多酚氧化酶(PPO)和过氧化氢酶(CAT)活性最大值分别出现于20 Gy,90 Gy,为对照的1.75倍、1.25倍;SOD活性与MDA含量呈极显著正相关,与POD活性呈极显著正相关;CAT活性与MDA含量呈显著负相关。

We studied the effects of irradiation of ^60Co-γ ray on some enzyme activity and MDA content of Anthurium adndracanum. The results showed that after treated with irradiation of ^60Co-γ Ray, The MDA content, SOD activity, POD activity increased and at the treatment of 50 Gy they reached the maximum;PPO and CAT activity come to the head at treatment of 20 Gy,90 Gy and were 1.75 and 1.25 times of CK respectively; There was a significant positive correlation between SOD activity and MDA content, between SOD activity and POD activity also, but the correlation between the CAT activity and MDA content was negative.