The distributions of sugar characteristics in wild and cultivated fruits are shown in Fig. 2. Wild fruits were significantly more acidic than cultivated fruits, with an average malic acid content of over 2.2 times higher. Malic acid content ranged from 0.8 to 22.7 mg/g in wild fruits, and from 0.5 to 18.9 mg/g in cultivated fruits. This indicates that the variation in fruit acidity is wider in the wild sample than in the cultivated sample. In contrast, the average concentration of the total sugars was slightly higher in cultivated fruits (93.1 mg/g) than in wild fruits (89.8 mg/g), but this difference was not statistically significant (P= 0.55). The average sweetness index (SI) was slightly higher in cultivated fruits (115.2) than in wild fruits (109.5), but this difference did not reach significant level (P= 0.31). However, the wild sample had higher variation in both total sugar concentration and SI than the cultivated sample