Abstract: The first ten main varieties of potato in Enshi prefecture, including Mila, E potato 10, E potato 12, E potato 13, E potato 14, E potato 16, E potato 17, Zhongshu 5, Feurita and Nanzhong 101, were used as the research objects, the self-retained species Mira was used as the control, which was not virus-free. The field resistance of different varieties was studied, and the field virus resistance identification, serological detection and yield determination were carried out. The results showed that E potato 13 showed sporadic disease and mild leaf rolling. The field detection rate was the lowest, which was 7.78%, the average yield was 88.8 t/hm², and PLRV was detected by ELISA. In contrast, the local self-kept agricultural not virus-free variety Mira had the most serious disease, showing serious leaf Mosaic and rolling leaves, with the highest incidence detection rate of 96.67%, and the lowest average yield was 24.3 t/hm², and ELISA detected PLRV, PVA, PVM, PVS four viruses. E potato 13 can be preliminarily designated as resistant and high quality variety for demonstration and promotion.

Key words: Enshi prefecture, potato, virus resistance, yield