Although potato virus Y (PVY) is one of the most economically important pathogens of potatoes in China, few studies have been carried out to characterize the virus in that country. Using reverse transcription-polymerase chain reaction (RT-PCR)-based genotyping developed previously, two types of recombinant PVY were identified in China for the first time. One resembled the European (Eu) type of potato tuber necrosis strain (Eu-PVYNTN), possessing three widely recognized recombinant joints (RJs 1-3) of the common strain (PVYO) and the Eu- type to...