Sebago is also known as Saibeiguo, papaya potato and so on. 1938 was bred in the United States, and 1942 was brought to China by Dr. T.P. Dyksila of the United States. It is cultivated in Sichuan, Hebei, Shanxi and some northwestern provinces. Mid-late maturity, light purple corolla, strong flowers, natural fruit; Tubers are oblate and oval, with white flesh, shallow eyes and smooth skin. Tubers are concentrated, large and tidy, with short dormancy period and good storage resistance. Highly anti-cancer, immune to potato virus A, susceptible to potato PLRV and ring rot, resistant to plant late blight.