Cucurbit Genetics Cooperative Report 19:83-84 (article .30) 1996 A. Provvidenti Department of Plant Pathology. Cornell University, New York State Agricultural Experiment Station, Geneva, N. Y. 11446 Papaya ringspot virus (PRV), an economically important viral agent, usually occurs in tropical and semitropical areas of the world. Its particles are flexuous rods about 780 x 12 mm […]