Recent Records and Incidence of Potato Tuber Necrotic Ringspot Disease (Potato Virus Y, Pvyntn) in Serbia
Noviji nalazi i stepen pojave prstenaste nekroze krtola krompira (potato virus y, pvyntn) u Srbiji
Author
Milosevic, Drago
Starovic, Mira
Brocic, Zoran
Jovovic, Zoran
Keywords
potato virus Ytuber necrotic ringspot disease
krompir
Y virus
prstenasta nekroza krtola
Metadata
Show full item recordAbstract
Potato virus Y i.e. its necrotic strain (PVYNTN) is among the most economically
harmful agents of potato diseases in Serbia and in many countries across the world.
Damage caused by the virus involves reduced yields of infected plants, its spread i.e. a
high percentage of infected plants at the country level and a high rate of annual
infections (infestation of healthy plants) during the growing season. In most widely
grown potato cultivars, the necrotic strain of potato virus Y causes symptoms only on
aboveground parts, depending on cultivar and time of infection (primary and
secondary).
The necrotic strain of potato virus Y causes additional problems to some potato
cultivars including symptoms of necrotic ringspot disease on tubers, resulting in their
reduced quality or rendering them unmarketable. Experience shows that these are
mostly cultivars that have a high dry matter content in tubers and that are processed into
potato chips.
This study presents results on the susceptibility of some potato cultivars to tuber
necrotic ringspot disease as well as on the incidence of the disease under conditions
characterised by a high potential for infection with the necrotic strain of potato virus Y. Y virus odnosno nekrotični soj (PVYNTN) ovog virusa je jedan od ekonomski
najštetnijih prouzrokovača bolesti krompira u Srbiji i mnogim zemljama sveta. Štetnost
virusa se ogleda u smanjenju prinosa zaraženih biljaka, njegovoj raširenosti odnosno
visokom procentu zaraženih biljaka krompira na području države i velikoj brzini
jednogodišnjeg širenja (zaražavanja zdravih biljaka) u toku vegetacije. Nekrotični soj Y
virusa, na većini široko rasprostranjenih sorti u proizvodnji krompira, prouzrokuje
simptome samo na nadzemnom delu biljke krompira u zavisnosti od sorte kromira i
vremena zaraze (primarna i sekundarna).
Nekrotični soj Y virusa krompira predstavlja dodatni problem za neke sorte
krompira na čijim krtolama prouzrokuje simptome prstenaste nekroze što umanjuje
njihov kvalitet ili ih čini tržišno neupotrebljivim. Dosadašnja iskustva govore da su to
uglavnom sorte sa visokim sadržajem suve materije u krtolama i koje se koriste za
preradu u oplemenjene proizvode.
U ovo radu su prikazani rezultati osetljivosti nekih sorti krompira na prstenastu
nekrozu krtola i stepen pojave bolesti u našim uslovima koje karakteriše visok
infekcioni potencijal nekrotičnim sojem Y virusa.