Determination of the main fruit chemical indicators of six apple cultivars in the agro-ecological zone of Deçan, Kosovo

Abstract

Study was conducted during three consecutive years, 2018-2020, in Deçan of Kosovo. There was studied the expression of the main fruit indicators of six new planted apple cultivars. Mean fruit weight varied from 93.3 g (Gold Delicious clone B) to 184.2 g (Jonagored). Saturn apple cultivar produced the largest size fruit (80 x 84 mm), while Montear Gala produced the lowest size fruit (58 x 70 mm). Fruit dry matter content varies from 14.6% (Saturn and Montear Gala cultivars) to 16.5% (Royal Gala), and 16.7% (Gold Delicious clone B). Fruit sugar content varies from 11.33% (Royal Gala) to 12.7% (Saturn). Total fruit acidity varies from 0.250 mg/100 g fresh fruit (Saturn) to 0.395 mg/100 g fresh fruit (Royal Gala). There were found significative differencies between cultivars for the main tested fruit indicators. There was found a significative relationship between some fruit indicators, as well.