First report of Groundnut ringspot tospovirus in Paraguay ...
2019-3-12u2002·u2002Leaf samples of naturally infected petunia plants were processed to obtain ultra-thin sections, which were examined under transmission electron microscope. The presence of pleomorphic particles of 80 to 120 nm in diameter, typical of tospovirus were confirmed (Fig. 3). To our knowledge, this is the first report of GRSV in Paraguay.
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