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Occurrence, Distribution, and Relative Incidence of Mosaic Viruses Infecting Field-Grown Melon in Spain

September 1998 , Volume 82 , Number  9
Pages  979 - 982

Marisol Luis-Arteaga and José María Alvarez , Servicio de Investigación Agraria, Diputación General de Aragón, 50080 Zaragoza, Spain ; José Luis Alonso-Prados , Juan J. Bernal , and Fernando García-Arenal , Departamento de Biotecnología, E.T.S.I. Agrónomos, 28040 Madrid, Spain ; and Amparo Laviña , Assumpció Batlle , and Enrique Moriones , Departamento de Patología Vegetal, Institut de Recerca i Tecnologia Agroalimentàries, 08348 Cabrils, Barcelona, Spain

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Accepted for publication 13 May 1998.

The main areas for field-grown melon (Cucumis melo) production in Spain were surveyed for the occurrence and relative incidence of cucumber mosaic virus (CMV), papaya ringspot virus-watermelon strain (PRSV-W), watermelon mosaic virus-2 (WMV-2), and zucchini yellow mosaic virus (ZYMV) during the growing seasons of 1995 and 1996. Samples from 1,152 plants showing symptoms of virus infection were collected from commercial melon fields and analyzed by enzyme-linked immunosorbent assay (ELISA). CMV and WMV-2 were the most frequently found viruses, both by the number of locations and by their incidence in each location. In contrast, PRSV-W and ZYMV were detected in fewer sites and at lower incidences. PRSV-W was not found in 1996. In 79% of the samples, only one virus was detected; 15% of the samples were doubly infected. Both the incidence of plants showing symptoms of viral infection and the relative incidence of each of the four viruses varied according to the region, while the main trends of virus distribution were similar for 1995 and 1996.

© 1998 The American Phytopathological Society