DISTRIBUTION OF POTATO VIRUSES IN YUGOSLAVIA

In the region of Yugoslavia data on potato viruses are not complete and they refer only to some regions.
Few investigators have treated this problem, and then only in the region of western Serbia (Smiljanic, 1975, Rankovic, et al. 1986, Milosevic, 1989, 1992, 1995). In this paper we are presenting a more comprehensive review of potato viruses for the period of 1994–1995, including other localities of Yugoslavia, on the most frequent cultivar Desiree.
Leaves from 100 potato plants of the cultivar Desiree from 12 localities in 1994 and from 9 localities in 1995 were randomly sampled.
Occurrence of the virus was detected by the ELISA method for potato virus Y (PVY), potato leafrol virus (PLRV), potato virus X (PVX), potato virus A (PVA), potato virus M (PVM) and potato virus S (PVS), as well as by bioassay on herbaceous indicator plants.
The obtained results proved PVY to be the most frequent virus, present from 10 to 100%, then PLRV from 0 to 100%, PVX from 0 to 17%, PVA from 0 to 25%, PVS from 0 to 12%. The presence of potato virus M could not be proved.
In the locality where a potato of elite reproduction was used for seeding in the first year PVY was present for 10%, PLRV was not present; in the second production year PVY was proved to be present for 60% and PLRV for 20%. All plants with proved PVY were infected by a necrotic strain of this virus (PVY^N). Tuber ring necrosis is a disease which occurs increasingly and is caused by PVY^NTN, and especially expressed in susceptible potato cultivars (Romano).

I Balkan Symposium On Vegetables and Potatoes

M. Gavran

https://doi.org/10.17660/ActaHortic.1997.462.148