（1College of Horticulture and Landscape，Hunan Agricultural University，Hunan Provincial Engineering Research Center for
Potatoes，Hunan Agricultural University，Changsha 410128，Hunan，China；2Institute of Vegetables and Flowers，Chinese
Academy of Agricultural Sciences，Key Laboratory of Biology and Genetic Improvement of Root and Tuber Crops，Ministry of
Agriculture and Rural Affairs，Beijing 100081，China）
In order to evaluate the reliability of cold tolerance identification indicators and analytical
methods for different potato germplasm resources，and to screen different cold-tolerant potato materials，
this study used conductivity method and field natural frost method to identify and analyze the cold tolerance of
103 potato germplasm resources by membership function method and clustering analysis method．The results
showed that the semi-lethal temperature and frost phenotypic classification combined with membership function
method and clustering analysis method could effectively evaluate the cold tolerance of potato．Taking the above
comprehensive evaluation method，21 parts of non-cold resistant materials，and 16 parts of cold resistant
materials were obtained．Thus，certain references for directional collection of cold-tolerant potato resources
were provided．
