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El-Sheshtawi, M., Elafifi, S., Elmazaty, M., Bartz, J., Elkahky, M. (2010). GASEOUS OZONE FOR CONTROLLING POSTHARVEST FUNGAL DECAY OF TOMATO UNDER MARINE SHIPPING CONDITIONS.. Journal of Plant Protection and Pathology, 1(12), 1035-1047. doi: 10.21608/jppp.2010.86969
M. El-Sheshtawi; S. Elafifi; M. Elmazaty; J. Bartz; M. Elkahky. "GASEOUS OZONE FOR CONTROLLING POSTHARVEST FUNGAL DECAY OF TOMATO UNDER MARINE SHIPPING CONDITIONS.". Journal of Plant Protection and Pathology, 1, 12, 2010, 1035-1047. doi: 10.21608/jppp.2010.86969
El-Sheshtawi, M., Elafifi, S., Elmazaty, M., Bartz, J., Elkahky, M. (2010). 'GASEOUS OZONE FOR CONTROLLING POSTHARVEST FUNGAL DECAY OF TOMATO UNDER MARINE SHIPPING CONDITIONS.', Journal of Plant Protection and Pathology, 1(12), pp. 1035-1047. doi: 10.21608/jppp.2010.86969
El-Sheshtawi, M., Elafifi, S., Elmazaty, M., Bartz, J., Elkahky, M. GASEOUS OZONE FOR CONTROLLING POSTHARVEST FUNGAL DECAY OF TOMATO UNDER MARINE SHIPPING CONDITIONS.. Journal of Plant Protection and Pathology, 2010; 1(12): 1035-1047. doi: 10.21608/jppp.2010.86969

GASEOUS OZONE FOR CONTROLLING POSTHARVEST FUNGAL DECAY OF TOMATO UNDER MARINE SHIPPING CONDITIONS.

Article 9, Volume 1, Issue 12, December 2010, Page 1035-1047  XML PDF (863.3 K)
Document Type: Original Article
DOI: 10.21608/jppp.2010.86969
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Authors
M. El-Sheshtawi1; S. Elafifi1; M. Elmazaty1; J. Bartz2; M. Elkahky1
1Plant Path. Dept., Fac. of Agric., Mansoura Univ., Egypt.
2Plant Path. Dept., Inst. of Food and Agric. Sci. (IFAS), University of Florida, USA.
Abstract
Postharvest fungal decays of tomato caused by Alternaria alternata, Botrytis cinerea, Geotrichum candidum and Rhizopus stolonifer, result in significant economic losses during different stages from harvesting from farm to fork. The efficacy of ozone gas for controlling fungal postharvest fungal decays of tomato was evaluated. In the laboratory tests, Ozone 0.1 ppm in the atmosphere above inoculated PDA didn’t affect radial growth, fresh weight or dry weight of the previously mentioned fungi, but, the development of aerial mycelium over the cultures appeared to be blocked. On the other hand, ozone significantly decreased the spore germination of the most tested fungi.  Ozone also, decreased the density of fungal spores in the air of a storage room when it was applied for 24 hours. In fruit tests, ozone 0.15 ppm at 10 °C and RH 99% prevented the development of lesions on wound-inoculated tomato fruits for 7 days. After 10 days, progressive lesions were observed but were smaller than those on control fruit. In contrast, when the treatment was applied at 22°C, lesions developed similarly to those on control fruit but sporulation was inhibited. There was no evidence of phytotoxicity associated with these ozone treatments.
Keywords
Ozone- Postharvest decay-Tomato-Alternaria alternata-Botrytis cinerea; Geotrichum candidum; Rhizopus stolonifer
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