Abstract
PMTV (Potato Mop-Top Virus ) and PAMV (Potato Aucuba Mosaic Virus) are new damaging pathogens of potato crop in Romania. They can cause serious reduced yield and decrease of the tuber’s quality. In case of these viruses, infected plants do not allways show signs of disease and the symptoms depend on potato cultivar, virus strain and the environment. PMTV and PAMV infection of material plants can produce spraing in tubers of sensitive varieties. PMTV causes heavy losses in northen Europe and it is very difficult to control. PAMV is a helping virus for the development of dangerous potyvirus like Potato Virus Y (PVY). Elimination of all these pathogens from the potato supply chain is essential for potato production and choosing resistant varieties to the infection with these viruses could be one of the measures recommended for farmers and producers. The results of this preliminary study shows that PMTV and PAMV were not found in the material collected from the following varieties: Armonia, Azaria, Christian and Millenium (samples collected from the counties Braşov, Covasna, Harghita, Suceava in 2019, 2020 and 2021).
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