Strawberry(Fragaria ananassa Duch.)is a kind of perennial herb and susceptible to virus disease for the vegetative propagation. Strawberry vein banding virus (SVBV) is one of four kinds of strawberry latent virus. Many negative effects such as strain degeneration, yield and quality reductions may be caused in commercial strawberry cultivars infected with SVBV. No effective chemical agent to control strawbery virus disease, plant genetic engineering technology including high effective plant regeneration, pla...