Post-harvest Rots of Tomato Fruits

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dc.contributor.authorFakorede, Adekunle
dc.contributor.otherOgundana, S. K
dc.date.accessioned2014-06-25T09:27:51Z
dc.date.accessioned2018-10-29T11:18:00Z
dc.date.available2014-06-25T09:27:51Z
dc.date.available2018-10-29T11:18:00Z
dc.date.issued1986
dc.degree.awardM.Sc. Microbiologyen_US
dc.departmentMicrobiologyen_US
dc.description.abstractIn a study of post-harvest fruit rot disease of tomatoes in South western Nigeria, the soft watery rot was the most prevalent accounting for more than 60% of total fruit rots during the rainy season. Aspergillus niger, Geotrichum candidum, Mucor hiemalis and Pichia kluyveri were organisms established as incitants of the rot. A. niger and G. candidum were major virulent pathogens while M. hiemalis and P. kluyveri were mild ratters. Rotting was most serious at temperatures of 25 - 30°C which, in fact, coincides with the optimum temperature for growth of the pathogens. The pathogens thrived best in tomato decoction media and at high relative humidity levels of 85 - 95%. Culture filtrates of the pathogens grown on different carbon substrates produced extracellular cellulase and Polygalacturonase (PG) enzymes. The production of cellulose was more pronounced than that of PG in all pathogens except niger which produced the two types of enzymes appreciably. Brestan, Bordeaux mixture and Thiabendazole proved effective in controlling the growth of all the pathogens at low concentrations of 250 mg/dm-3 (a.i) while Benomyl and fundazol were effective against A. niger at concentrations of 500 and 1 50 mg/dm-3 (a.i.) respectively.en_US
dc.facultiesScienceen_US
dc.format.filetypepdfen_US
dc.identifier.citationAPAen_US
dc.identifier.urihttp://localhost:8080/xmlui/handle/123456789/3515
dc.language.isoenen_US
dc.pages.totalpages73pen_US
dc.publisherObafemi Awolowo Universityen_US
dc.subjectHarvesten_US
dc.subjectfruiten_US
dc.subjecttomatoen_US
dc.subjectpathogensen_US
dc.subjecttemperature/en_US
dc.subjectrottingen_US
dc.titlePost-harvest Rots of Tomato Fruitsen_US
dc.typeThesisen_US
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