Abstract: In order to select suitable varieties for sweetpotato bud production, 24 sweetpotato varieties were cultured in dark to produce commercial sweetpotato bud. The quality of sweetpotato bud was identified by taste evaluation method. Effects of different culture substance, light and culture media on growth characteristics and nutritional quality of optimal sweetpotato bud to determine the suitable cultivation methods. The results showed that there were significant differences in growth and nutritional quality among different varieties of sweetpotato bud. Variety Jinyu was the best variety for sweetpotato bud production. Moreover, the optimal culture condition for sweetpotato bud production was on self-made culture media (LD) and in dark.

Key words: sweetpotato, bud, dark culture, cultivation method, nutritional quality