Characteristics including resistance, commodity, quality and yield of 8 potato varieties were trialed and compared. The results showed that the yields of the varieties Luyin, 9903, Zhongshu No 3, and Zhongshu No 2 increased, respectively, by 25.46%, 19.09%, 9.59% and 5.67% compared to the variety Dongnong 303 which is the main variety cultivated in Hunan now; the four varieties had strong resistance and good integrated characteristics and could be extended and cultivated in Hunan to replace the variety Dongnong 303. The variety Atlantic which had strong resistance, high dry mater content and l...