Published in Scientific Papers. Series B, Horticulture, Vol. LXV, Issue 1
Written by Daniela SCEDEI, Anișoara DUMA-COPCEA, Giancarla VELICEVICI, Carmen BEINȘAN, Sorin VÂTCĂ
The purpose of the study was to determine biometric and physiological indices during storage processes in four plum varieties, two of them originated from Romania ('Record’ and 'Vinete Românești’), one from USA ('Stanley’), and one from Serbia ('Cacanska Lepotica’). The fruits were harvested at maturity and stored for 5 and 10 days at two different temperatures (4°C and 22°C, respectively). We analyzed 25 fruits for each variety and the following determinations were made: diameter, height, weight, sugar content, firmness, juice acidity and dry matter content. 'Record’ and 'Cacanska Lepotica’ plum varieties had the highest values in terms of fruit weight (60.37 g and 43.49 g, respectively), after 10 days of storage, at 22°C. Regarding the sugar content of the fruit, it was found that the 'Record’ and 'Vinete Românești’ varieties had a higher percentage, significantly positive p < 0.01 with 22.06 and 24.60%. After 10 days of preservation, the trend of increasing of the content of soluble carbohydrates continues possible due to the transformation of starch into glucose, following enzymatic hydrolysis processes. There was also found a pronounced decrease in fruits firmness, acidity of the fruit juice, but also an increase in fruits dry matter content.
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