“…D'Arcy and Mayo (1997) suggested grouping these viruses into two genera: Luteovirus , which would include PAV and MAV and probably SGV, and Polerovirus , for RPV and probably RMV (Geske et al, 1996) and GPV (Cheng et al, 1996) Only MAV, PAV, RMV, and SGV have been clearly identified on maize crops either singly or in combination. The RPV serotype has been detected in maize (Comas et al, 1993; Webby et al, 1993), but the extent to which RPV infects this species is unclear (Beuve and Lapierre, 1993) SGV and RMV are found mainly in regions with a continental climate, such as central Europe (Pocsaı̈ et al, 1995) MAV also infects maize and, in a few cases, is the most frequently encountered BYDV virus in maize (Comas et al, 1993) PAV is present in most growing regions and is often the prevalent BYDV detected in maize (Brown et al, 1984; Beuve and Lapierre, 1993).…”