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Influence of ripening on the ethylene and carbon dioxide production during storage of plum fruits

2013; Mendel University Press; Volume: 60; Issue: 8 Linguagem: Inglês

10.11118/actaun201260080133

2464-8310

Jarmila Kožíšková, J. Goliáš,

Horticultural and Viticultural Research

The fruits of 13 plum cultivars were analysed at two diff erent stages of maturity: fi rst when they were ready for picking according to conventional commercial criteria, and again a er seven days of maturation at 20 °C in a normal oxygen atmosphere during shelf life.Firmness, soluble solids concentration (SSC), respiration rate and the production of ethylene were measured.In the period of over-ripening SSC increased, and no diff erences were found in relation to the cultivar.The fruits in this period were physiologically in a phase of reduced intensity of respiration, while production of ethylene increased and was associated with the earliness of the cultivar.Cultivars with a short vegetation period produce more ethylene while late-maturing cultivars have a low potential for ethylene production.Based on post-harvest changes in the tested quality factors, the late-ripening plum cultivars (cv.) 'Jojo', 'Topend', 'President', 'Tophit' and 'Elena' have higher storage potential.Changes in ethylene production in response to shelf life seem to play a regulatory role in fruit fi rmness.A high signifi cant negative correlation was detected between levels of skin fi rmness and ethylene production.