Abstract:

In order to choose the best comprehensive performance grape variety that most appropriate cultivated in Chongqing, the main grape variety ‘Michili’, ‘Kyoho’, ‘Summer Black’ and ‘Muscat Kyoho’ in Chongqing were chose as the materials, determining the physical parameters of the fruits, sugar, acid, vitamin C, soluble solids and procyanidins content to give the basis for species selection. According to the physical and chemical properties analysis, sugar content of ‘Kyoho’ was the highest, and ‘Muscat Kyoho’ had the lowest sugar content. Total acid content of ‘Michili’ was the highest, and ‘Muscat Kyoho’ was the lowest. Vitamin C content of ‘Summer Black’ was the highest, and ‘Michili’ was the lowest. Soluble solids content of ‘Summer Black’ was supreme, and ‘Kyoho’ was the lowest. The determination results of Procyanidins content in the four varieties showed that the procyanidins content was significant different, the procyanidins content of peel and juice was as follows: ‘Muscat Kyoho’>‘Summer Black’>‘Kyoho’>‘Michili’. The procyanidins content of seed was as follows: ‘Muscat Kyoho’>’Kyoho’>’Michili’, ‘Summer Black’ is non-nuclear varieties. The procyanidins content of different parts of the same breed is: seed>peel>pulp.