Effect of cold storage time on chilling injury in two zucchini cultivars

Autor: M. M. Rebolloso, Zoraida Megías, L. J. Gonzalez-Rodriguez, Juan Luis Valenzuela, Encarnación Aguado, Alicia García, Manuel Jamilena, Susana Manzano
Rok vydání: 2018
Předmět:
Zdroj: Acta Horticulturae. :479-486
ISSN: 2406-6168
0567-7572
Popis: Chilling injury (CI) is one of the most serious problems that reduce the quality of zucchini. Usually the damage increases during exposure to room temperature after cold storage, therefore the aim of this experiment was to evaluate the fruit postharvest quality of two zucchini cultivars when they are transferred to room temperature after different cold storage times. All fruits used were harvested from plants of two commercial hybrids ('Sinatra' and 'Victoria'), grown in the same field trial under standard greenhouse conditions in Almeria, Spain. Fruits of uniform length (18-20 cm) were harvested on the same day in the middle of the productive period with a view to minimizing the effects of environmental conditions. Fruits were stored for two weeks, but under the following conditions: they were randomly divided in 6 different lots of 36 fruits each in order to apply 6 different cold storage times: 2, 3, 5, 7, 10 and 14 days at 4°C. After cold treatments, the fruits were kept at 20°C during 12, 11, 9, 7, 4 and 0 days, respectively, for completing the two weeks of conservation. CI was evaluated after each cold storage (2, 3, 5, 7, 10 and 14 days) and ethylene production and respiration rate were assessed at 0, 7 and 14 days of storage in a lot of fruits of each cultivar and cold storage time. Respiration rate increases gradually during the 14-day experience, regardless of length of cold storage, however, ethylene production reached a maximum peak at 7 days, then ethylene production decreased irrespective of the cold storage time. A different sensitivity to CI was found between the two cultivars, 'Sinatra' being the most sensitive.
Databáze: OpenAIRE
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