Survey on satsuma dwarf virus in Turkey
A study has been carried out in the region of Izmir, in Turkey, to evaluate the incidence of satsuma dwarf 'nepovirus' (EU Annex II/A1) on satsuma mandarins (C. unshiu) and to identify the strains present. During this survey, 7-20 year-old satsuma trees have been examined for satsuma dwarf symptoms (131 orchards in Izmir Central country and Seferihisar, 19 orchards in the other counties located in the two extensively satsuma-growing areas). In spring, the young shoots were tested by ELISA. Based on visual observations, the incidence rate of satsuma dwarf virus was of 13.77 % in the Central county and Seferihisar. The disease has not been observed in the other citrus-growing areas of Izmir. According to the results of ELISA tests, whole orchards were infected in the Central county and Seferihisar. However, negative results were obtained for other citrus species (e.g. lemons (C. limon), Bodrum common mandarin (C. deliciosa), sweet oranges (C. sinensis) and grapefruits (C. paradisi) collected from Çesme and Karaburun counties). During this study, it was also found that most of the severely affected trees were infected by a necrotic strain of satsuma dwarf virus.
Fidan, Ü; Azeri, T. (1994) Testing satsuma mandarins for satsuma dwarf virus in Izmir.
Zirai Mücadele Arastirma Yilligi, no. 24-25 (1989-1990), p 175.