Two viruses named Hami-melon necrosis virus and Hami-melon vein necros-is virus have been isolated from some early ripening varieties of Hami-mel-on showing necrosis symptoms in the field of Xinjiang.They infected Hami-melon systematically,and serious stunting of growth occured after the plantswere infected by the viruses.But the necrotic symptoms caused by HmNVand HmVNV were different. The host range of HmNV is very wide which included 14 species thatbelong to cucurbitaceae,Leguminoceae and Solanaceae,but ...