Grapevine leafroll disease is the most devastating disease of grapevine in many grapeving producting areas. it distributes widely and creates to the biggest economic loss, besides, it is the only one that has a nature transmission vector. It have the vital practical significance in improving production of grape to take the treatment of virus elimination and promotes the non-viruses cultivation.
Four represent varieties The Beauty, Excellent Seedless, Red Earth, Ruby Seedless with virus were us...