低磷胁迫对巴西橡胶树幼苗保护酶活性的影响

通过水培试验,研究低磷胁迫对巴西橡胶树幼苗保护酶的影响.结果表明:在胁迫处理84d中,MAD含量、SOD活性不断增加,且均高于对照;POD、CAT活性在胁迫处理42d内增加,42d时均高于对照,42～84d活性开始降低,84 d时低于对照.根中MAD含量胁迫处理变化量比其他器官低;SOD、POD、CAT活性胁迫处理变化量较其他器官高.根较其他器官对低磷胁迫更为敏感.

Study on the Protective Enzyme Activity of the Hevea Seedling Under Low Phosphorus Stress

By the hydroponic culture method, the effect of low phosphorus stress on the protective enzyme system of Hevea seedlings were studied. The results showed that MAD content and SOD activities were increased under the low phosphorus stress, and higher than the CK in 84 days; POD, CAT activities began to increasing in 42 days, and both higher than CK at the 42nd day, decreased in 42~84 days and lower than the CK at the 84th Day. MAD content was changed in the roots less than in other organs, while the SOD, POD and CAT activities changed a lot more than in other organs. Root was much more sensitive by the low phosphorus stress than other organs.