The senescent index between four calli originated from leaves and RMBs(regeneration mass blocks) from aerial roots were compared.The results showed that the orders by the values of superoxide,the activities of SOD(superoxide dismutase) and CAT(catalase) were yellow green callus,golden callus,dark green callus,RMB and brown callus.The highest activities of GPX(glutathione peroxidase) were showed in brown callus,followed by dark green,yellow green callus,golden callus and RMB.For MDA(malondialdehyde),the highest contents were observed in golden callus,followed by brown callus,yellow green callus,dark green callus and RMB.It was demonstrated that the activities of SOD and CAT had synergistic effects in eliminating oxidative stress,and the higher activities of SOD and CAT in RMBs suggested their greater ability of eliminating oxidative stress.The enzyme activities of GPX in RMB were significantly lower than that in other calli.In other hand the activities of GPX were relatively lower in yellow green callus,the lower contents of super-oxides and MDA might be the results of higher antioxidant activities.In short rapid propagation of RMBs had advantages over that of other calli because of their higher anti-oxidant activities.