Survey and Identify of potato viruses in the western region of Libya
Keywords:
Spring and autumn planting, potato, virus, LibyaAbstract
A survey was conducted to detect viruses infecting potato crop in the spring and the autumn seasons during 2009 and 2010 in the western region of Libya. 787 samples were collected from 32 sites in six regions. All samples were identified through double antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA) for several viruses (Potato virus Y) (PVY), (Potato virus X) (PVX), Potato virus S(PVS), (Potato virus M) (PVM) and (Potato virus A) (PVA). 221 sample were Interacted positively with potato virus Y in 2009 season with Infection rate 18.64% and 73.14% in spring and autumn seasons respectively, while two samples were reacted positively in spring with potato virus X. 75 samples were reacted positively with potato virus Y in the 2010 season at a rate of 13.3% and 36% in spring and autumn seasons respectively. The study showed that no infection of viruses PVA, PVM, PVS in both seasons. The infections were higher in 2009 than 2010.Four tobacco plant species were used as indicator plants to study the symptoms of PVY. Mosaic, leaf malformation, dwarf and vein clearing were the main varied symptoms that’s showed in this study. This is the first report of Potato Virus Y (PVY) on potato crop in Libya
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