Abstract:

The study was done for the induced resistance of Fusarium oxysporum f. sp. cubense for defense enzymes as an indicator, in order to develop biocontrol agents. Inoculated Fusarium moniliforme, saturated limewater and sterile water respectively to banana seedlings. After 7 days, inoculated Fusarium oxysporum, determinated peroxidase (POD), superoxide dismutase (SOD), catalase (CAT) activity. The results showed Fusarium moniliforme and saturated limewater had a certainly affection on POD enzymes, but in 3-6 min, all did not reach significant level of five percent, in 25℃ reached 15 min, the SOD activity of Fusarium moniliforme (22.967) was higher than saturated limewater (18.171) and sterile water (14.322) .CAT activity curve of two treatments were slight higher than comparison, but between treatments had not significant difference, showed limewater and Fusarium moniliforme can produce induced resistance certainly. The purpose of the research laid the foundation for the induced resistance of Fusarium oxysporum f. sp. cubense.