On the epidemiology of plum pox virus in the Czech Republic
1997
Polak, J. (Vyzkumny Ustav Rostlinne Vyroby, Prague-Ruzyne (Czech Republic). Odbor Rostlinolekarstvi)
The distribution of natural sources of plum pox virus (PPV) that infects stone fruits in the Czech Republic was investigated. Wild growing plums are almost completely infected with PPV in central Bohemian and Moravian regions. Myrobalan (Prunus cerasifera ssp. myrobalana) is probably the second main natural source of PPV. The virus was also detected in some plants of blackthorn (Prunus spinosa) growing in PPV infected areas. Leaves of these plants showed distinct symptoms, which were very similar to those on plums. PPV was not detected in blackthorn shrubs growing in forest and in areas where PPV is not or only occasionally present. Prunus spinosa is considered to be only a secondary source of PPV infection.
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