Apricot plants obtained by crossing between varieties or selections recognized as resistant to PPV, and the varieties or selections of an agronomic interest were inoculated for the PPV-M (isolate Gr 0019) and evaluated according the protocol of Amenduni and al. (2003) by observing the symptoms, serological test ELISA and molecular diagnosis RT-PCR. The results of the test showed that 10 selections showed symptoms and gave positive results with the ELISA test, while five selections were asymptomatic and ELISA results were negative but were proved to be infected by PPV when tested by RT-PCR.
