Abstract: Three year\|old Kyoho grape under organic cultivation and conventional cultivation were used as materials， fruit diameter， fruit weight， total soluble solids （TSS） content， titratable acid （TA） content， TSS/TA and Vitamin C （VC） content in different development periods of grape were determined， free amino acid content and fruit texture in the mature stage were examined. The aim of this research was to explore the effects of organic cultivation on fruit quality in Kyoho grapes. The results indicated that the contents of TSS， TA， TSS/TA， VC and soluble protein in Kyoho grapes fruit under organic cultivation were significantly higher than those of control. Fruit weight and diameter were similar with the control group during the whole development stage， but they were slightly reduced than those of control in the berries mature stage. This study showed that organic cultivation could improve the quality of Kyoho grapes.

Key words: organic cultivation, conventional cultivation, Kyoho grape, fruit quality