RIPENING TIME AND FRUIT QUALITY OF INTRODUCED SWEET CHERRY (PRUNUS AVIUM L.) CULTIVARS

摘要

Biological-pomological properties of six introduced sweet cherry cultivars ('Celeste', 'Germe'sdorfer', 'New Star', Stark Hardy Giant', 'Starkrimson','and 'Sunburst') grafted on Colt rootstock were studied in the West Serbia region, during a two-yearperiod (2011-2012). Investigation has included ripening time, pomological properties and biochemical composition of fruits.'Celeste' had the earliest, whereas 'Germersdorfer' had the latest ripening time, belonging to the third and the fifth week group of sweet cherry ripening period.The highest fruit weight was found in 'Sunburst' (10.93 g). The soluble solid content ranged from 13.70% ('New Star') to 15.80% ('Germersdorfer').The highest total sugar content was also found in 'Germersdorfer' (11.56%), and the lowest in 'New Star' (10.13%). As for total acids, 'Germersdorfer' exhibited the highest content (0.83%), and 'Stark Hardy Giant' the lowest (0.56%). With regard to the total acids content, the juice of Germersdorfer' and 'Stark Hardy Giant' had the lowest and the highest pH value, '.e. 3.76 and 3.96, respectively.The .esearch performed and results obtained suggest that studied sweet cherry cultivars had shown good results in Serbian agroecological conditions, and could have a significant place in the assortment structure of sweet cherry in the region of Serbia and Balkan.