Weed reservoirs of PVY in Bulgaria as a main source of diseases of potato
Keywords:
potato; PVY; weedsAbstract
Potato virus Y (PVY) is the type species of the genus Potyvirus, family Potyviridae. It has the widest host range of the family. The virus infects 495 species from 72 genera and 36 botanical families. The main range of natural hosts is concentrated mainly in three botanical families – Solanaceae, Chenopodiaceae and Commelinaceae, including potatoes, tomatoes and peppers as the most cultivated crops. Weeds that have been identified and analyzed in the plantations of potatoes are Chenopodium album, Solanum nigrum, Datura stramonium, Xanthium strumarium, Capsella bursa-pastoris, Cirsium arvense, Convolvulus arvensis, Sonchus arvensis and others. Some of them are asymptomatic virus reservoirs by which vectors propagate viral infections to cultivated crops.
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