ABSTRACT


Antonio Morales M.1, Lautaro Cancino E.2, Edgardo Oehrens E.3 y Héctor Pairoa C.4
 
Percentage of rotten cherries was determined in the varieties "Corazón de Paloma" and "Bing", harvested in three stages of maturity and stored at 0,5ºC and 87% relative humidity, during 7 and 14 days, plus a period of two more days at room temperature.
The percentage of rotteness was greater as the grade of maturity and the number of days in refrigerated storage increased. Observed percentage of damage in variety Corazón de Paloma was greater than in the Bing variety.
The rotten fruit was divided into three groups according to the type of rot observed: Depresion Type, Green Type and Mixture Type. Outer and inner lession tissues were placed on Petri dish with PDA and the following fungi were isolated: 1. Alternaria tenuissima (Fr.) Wiltsh.; 2. Aspergillus niger van Tiegh.; 3. Botrytis cinerea Pers.; 4. Cladosporium herbarum (Pers.) Link. ex Fr.; 5. Epicoccum sp.; 6. Fusarium oxysporum Schlecht.; 7. Monilia laxa (Ehr.) Sacc. y Vogl.; 8. Penicillium expansum (Link.) ex Thom., y 9. Rhizopus nigricans Ehr. ex Fr. Pathogenicity tests indicated that species 1-3-4-6-8 were able to grow at 0,5°C and species 2-5-7-9 could not develop in refrigerated storage. Besides, all pathogens determined could penetrate through wounds. Species 3-6 and 9 could penetrate, also directly through contact.
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1Ing. Agr. Empresa Nacional de Frigoríficos S.A. Santiago, Ayudante de la Cátedra de Fitopatología General y Patología Frutal, Facultad de Agronomía, Universidad de Chile, Casilla 1004, Santiago, Chile.
2Ing. Agr., M.S., Profesor de la Cátedra de Fitopatología General, Depto. Sanidad Vegetal, Facultad de Agronomía, Universidad de Chile, Casilla 1004, Santiago, Chile.
3Ing. Agr., Ph. D., Profesor de la Cátedra de Fitopatología, Facultad de Ciencias Agrarias, Universidad Austral de Chile. Valdivia, Chile.
4Ing. Agr., Profesor Auxiliar de la cátedra de Fiologia de postcosecha, Depto. Prod. Agrícola, Universidad de Chile.