Assessment of the Most Important Viruses Affecting Othello Local Grapevine Variety

Abstract

Grape (Vitis vinifera) belonging to the family of Vitaceae, it is one of the most important economic fruit crops in the world. In Hungary, for several thousand years, vine has been grown in the Carpathian basin, where the climatic and soil conditions are favourable for growing grape vine. However, it is facing adversity of multiple virus infections that influenced negatively the performance of the cultivars at a certain extent, which cause premature death of the stocks and generating great yield losses. The study was conducted in a Grapevine plantation from the area of Central Transdanubia (Lesencefalu) (Figure 2). 60 samples were collected from Othello grapevine variety and analyzed in the laboratory to investigate the virus infection using DAS-ELISA. 6 viruses category (GLRaV1, GLRaV2, GLRaV3, GLRaV6, GLRaV7 and GFkV) were found to infect this variety (Appendix 1). Among those 60 samples, 27 samples were infected with viruses while 33 samples were not infected. The highest infection was found to be caused by GLRaV1 while the lowest infection was found to be associated with GLRaV3 (Figure 4). However, 13 samples were found to be infected with more than one virus (multiple infections) (Table 2), while 14 samples were found to be infected with only one virus (single infection) (Appendix1).