The content of tree organic acids (citric, malic, and fumaric) varied as specific species and cultivar. - C.pepo of malic acid was recorded. - Citric acid content was diversified in specific cultivars. - Fumaric acid presents in small amount. - The highest content of Fumaric was found in C. maxima and
C. moschata. - C. pepo its quantity was more differentiated depending on particular cultivars.