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The potato tuber ringspot necrosis isolate of potato virus Y (PVY(NTN)) is a recently recognized and highly aggressive isolate of the PVY(N) group of strains. In order to screen specifically sources of resistance to PVY(NTN) a method to separate PVY(NTN) from PVY(N) is needed. To achieve this, 61 isolates from 13 imported and locally developed potato(More)
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