ISHS Acta Horticulturae 472: XVII International Symposium Virus and Virus-Like Diseases of Temperate Fruit Crops
ANALYSIS OF LEVEL OF PPV INFECTION IN PEACH AND NECTARINE TREES IN SOUTHERN ROMANIA |
| Authors: | S. Toma, A. Ivascu, V. Balan |
| Keywords: | Prunus persica, plum pox virus, varieties, degree of infection |
| Abstract:
Plum pox potyvirus (PPV), the causal agent of sharka disease, is the most devastating viral pathogen of stone trees in most European countries (Pasquini et al., 1995). PPV in peach has spread to many countries such as: Italy, Greece, Yugoslavia, Spain, France, Turkey and Portugal. The most efficient method to control PPV is to breed cultivars resistant to PPV infection. Experiments were conducted between 1994 and 1996 in experimental plots at the Research Station for Growing Fruit Trees - Baneasa, Bucharest. We tested a large number of trees under natural PPV infection conditions and found 650 peach and nectarine phenotypes which were resistant to PPV infection. Some peach cultivars, such as Jerseyland and Maygold, showed PPV symptoms. Some nectarine cultivars, such as Hardyred, Romamer II, Harko, and ARK 140, showed PPV infection as well. The following peach cultivars did not express PPV symptoms: Collins, Candor, Lebedev, Early Red Free, and Aurelio. The following nectarine cultivars did not show PPV symptoms during the trial period: Nectared 5, ARK 90, ARK 165, and ARK 71. | |
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