Abstract:

Potato virus Y (PVY) has become one of main viruses on tobacco. Now there are few reports on the variation of PVY, but the occurrence of PVY variation should arouse scientific researchers’ attention. This paper introduced the course of strains differentiation of PVY and gave a general account of methods of detecting PVY. With the introduction of seed resources and changes of environment, variation strains of PVY have constantly appeared which put forward a higher requirement to the detection methods, so various detection methods should be used comprehensively to improve the detection accuracy in practice.