| Abstract: In order to increase the variety of potato cultivars in Hebei province with double cropping cultivated region, new strains of early ripening and special potato, which were suitable for planting in Hebei province with double cropping cultivated region, were screened. Taking 'Heijingang' as the control, the growth period, commercial characters and yield were comprehensively evaluated through comparative experiments. The results indicated that the commercial potato yield of S4-1-6 was 2 132.28 kg per 667 m2, which was 12.23% higher than that of the control. The comprehensive disease resistance of S4-1-6 was stronger. And S4-1-6 had long oval shape potato, purple potato meat, violet black potato skin. The yield of S6-1-1 was 2 105.51 kg per 667 m2, which was 10.82% higher than that of the control and its comprehensive disease resistance was stronger. S6-1-1 had oval shape potato, pink potato meat, red potato skin. Two new strains of colored potatoes were suitable for mashed potatoes and potato pie, which could enrich the people's table, and increase the choice of cultivars for the local potato planting. |