Application of Candida saitoana and glycolchitosan for the control of postharvest diseases of apple and citrus fruit under semi-commercial conditions.
El-Ghaouth, A.; Smilanick, J. L.; Brown, G. E.; Ippolito, A.; Wisniewski, M.; Wilson, C. L.;
Plant Disease Year: 2000 Vol: 84 Issue: 3 Pages: 243-248 Ref: 21 ref.
2000
บทคัดย่อ
The efficacy of the combination of C. saitoana with 0.2% glycolchitosan (the bioactive coating) as a biocontrol treatment of postharvest diseases of apple and Citrus fruit was evaluated in tests with natural inoculations that simulated commercial packinghouse conditions. The growth of C. saitoana in apple wounds and on fruit surfaces was not affected by glycolchitosan. The bioactive coating was more effective in controlling decay of several cultivars of apples (Red Delicious, Rome, Golden Delicious and Empire) than either C. saitoana or 0.2% glycolchitosan alone. Depending on the apple cultivar used, the bioactive coating was comparable or superior with thiabendazole in reducing decay. The bioactive coating was also superior to C. saitoana in controlling decay of oranges (cultivars Washington navel, Valencia, Pineapple and Hamlin) and cultivar Eureka lemons, and the control level was equivalent to that with imazalil. The bioactive coating and imazalil treatments offered consistent control of dec
ay on Washington navel oranges and Eureka lemons in early and late seasons, while C. saitoana or 0.2% glycolchitosan were most effective on early-season fruit. The combination of C. saitoana with 0.2% glycolchitosan also reduced the incidence of stem-end rot of cultivar Valencia oranges, but control was less effective than treatment with imazalil.