Abstract: In order to select the high yield, multi-resistance and high quality potato（Solanum tuberosum L.） varieties suitable for Dingxi city planting,in contrast to Favorita, Atlantic and Shepody, a comparative experiment on 10 high quality potato varieties was carried out, through the comprehensive analysis of the characters of various varieties such as high yield,stress resistance,taste and tuber quality,6 special potato varieties with high yield,high quality and drought resistance were screened. Among them, AGRICO-1 and AGRICO-2 meets the requirements for vegetable varieties,comparison with Favorita, the yield increases 16.6% and 32.3%, respectively. AGRICO-5 and AGRICO-6 meet the requirements of fried potato chips,comparison with Atlantic,the yield increases 21.3% and 18.6%, respectively. AGRICAO-8 and AGRICO-9 meet the requirements of fried fries,comparison with Shepody, the yield increases 19.7% and 43.3%, respectively. Comparing with the contrastive group, varieties of AGRICO-2 and AGRICO-9 are particularly outstanding in the margin of yield increase, and they have strong drought resistance and good quality, and have a good prospect for popularization and application.

Key words: potato（Solanum tuberosum L.）, variety, yield, quality, comparative test