Potato virus Y in tobacco crops

Abstract

Potato virus Y (PVY) was first reported in 1930s, and now it is present in all potato, tobacco, pepper and tomato growing areas. According to the recent investigations of its presence and distribution, PVY is considered to be the most economically important tobacco virus in our country. Numerous aphid species can transmit this virus in a nonpersistant manner. Although the appearance and severity of the symptoms depend on virus strain as well as plant host cultivar, damage is always significant, especially in the case of early infections. In addition to the direct yield decrease, PVY causes changes in tobacco leaves quality. The most important measures of PVY control are: spatial isolation of tobacco and potato crops, control of aphid population in order to reduce the disease extent and the growing of resistant tobacco varieties when ever available.

Prvi podaci o virusu crtičastog mozaika krompira (Potato virus Y, PVY) potiču iz 30-ih godina prošlog veka, a danas je poznato da je prisutan u svim područjima gajenja krompira, duvana, paprike i paradajza. Ispitivanje pojave i rasprostranjenosti virusa duvana poslednjih godina su pokazala da je PVY ekonomski najznačajniji virus duvana u našoj zemlji. PVY prenose brojne vrste biljnih vaši na neperzistentan način. Iako izgled i jačina simptoma zavise od soja virusa i sorte biljke domaćina štete su uvek značajne naročito u slučaju ranih zaraza. Pored direktnog smanjenja prinosa PVY dovodi do promene kvaliteta duvanskog lišća. Najvažnije mere kontrole PVY su: gajenje duvana i krompira na prostornoj udaljenosti, suzbijanje lisnih vaši radi smanjenja obima zaraze i korišćenje otpornih sorti duvana.