An overview of the presence and research of the phytoplasma diseases on grapevine and fruit trees in Slovenia
2001
Seljak, G. (Kmetijsko veterinarski zavod, Nova Gorica (Slovenia)) | Petrovic, N. (National Inst. of Biology, Ljubljana (Slovenia))
The research on phytoplasma in Slovenia is indicating their increased phytopathological and economical impact. In Slovenia the presence of the following phytoplasma diseases of woody plants have been established: Grapevine yellows, European stone fruit yellows, Apple proliferation, and Pear decline. Grapevine yellows are present primarily in Primorska wine growing region, and were found to be in an escalated progression in Posavje and Podravje regions. Laboratory analyses confirmed the presence of Aster yellows and Stolbur phytoplasma. The occurrence of Flavescence dorée has not been yet fully confirmed in Slovenia. Vector of FD, Scaphoideus titanus is widely spread only in vineyards of Primorska region. The presence of Hyalestes obsoletus, the vector of BN has been established in Primorska region, but not in the vineyards. Aprcot chlorotic leafroll (ESFY) is a new disease in Slovenia, which was noticed from 1989 in West and South West parts on peaches, apricots and plums of a Chinese-Japanese origin. The disease is observed to be in a gradual progression. Apple proliferation is present in Slovenia, and it is becoming an economically important disease. Pear decline has not been extensively investigated in Slovenia, but there are some clear indications for its presence. Although the presence of potential vectors of all above mentioned phytoplasma was established in Slovenia, their spread and specially their vectoring potential remain to be investigated.
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