Effects of Different Storage Temperature on Nutritional Quality of Potato Cultivar Kexin No.1

Objective] This study almed to investigate the effects of different storage temperature on nutritional quality of potato cuItivar Kexin No.1 and expIore the opti-mal storage temperature and time for Kexin No.1 with different uses. [Method] After storage at different temperature （1, 4, 10 and 16 ℃）, changes in dry matter, starch, reducing sugar and protein contents, amyIase activity and germination rate of potato cuItivar Kexin No.1 were observed and analyzed. [Result] Reducing sugar content of Kexin No.1 stored at 1 and 4 ℃ increased significantIy compared with that of Kexin No.1 stored at 10 and 16 ℃. Kexin No.1 stored at 1 ℃ exhibited no chiI ing injury. After storage at 16 ℃, Kexin No.1 began to germinate at 30 d, and the Iength and number of germinated buds increased significantIy with the extension of storage time, dispIaying a significant reduction in moisture content. Kexin No.1 potato couId be stored at 1 and 4 ℃ for more than 120 d without any changes in various indi-cators. Therefore, 1-4 ℃ was the optimal storage temperature for potato cuItivar Kexin No.1. [Conclusion] This study provided theoretical basis and technical support for the optimization of post-harvest storage conditions of potatoes.