First results on laboratory analyses of phytoplasma on grapevine and fruit trees
2001
Brzin, J. | Petrovic, N. | Ravnikar, M. (National Inst. of Biology, Ljubljana (Slovenia)) | Seljak, G. (Kmetijsko veterinarski zavod., Nova Gorica (Slovenia)) | Osler, R. | Ermacora, P. | Loi, N. | Carraro, L. | Ferrini, F. | Reffati, E. (Udine Univ. (Italy). Dipartimento di Biologia Applicata alla Difesa delle Piante)
Increased presence and spread of phytoplasma diseases on fruit trees and grapevine in Slovenia has been reported over a last decade. The reports mainly based on visual inspections of orchards and vineyards, and on a limited number of samples analyzed in the laboratories in Italy and France. At the national Institute of Biology, Center PLANTA, we have recently introduced laboratory procedures for routine analysis of quarantine phytoplasma on fruit trees (Apple proliferation, AP, Pear decline, PD, and European stone fruit yellows, ESFY) and grapevine (Flavescence doree, FD), and other grapevine yellows phytoplasma (Bois noir, BN, and Aster yellows, AY). The introduction of these new techniques will enable the identification and the evaluation of spread and economic impact of specific phytoplasma disease agents in Slovenia. New detection procedures will also enable the control over the production of healthy planting material, the control over the imported planting material, and the issuing of EC certificates required for the export of planting material. In a year 2000 we have analyzed 50 grapevine plants and 72 fruit trees (45 apple, 9 pear, and 18 stone fruits trees) from different locations throughout Slovenia. The results of these analyses will be presented and a need to monitor the presence and spread of the named phytoplasma diseases in Slovenia will be discussed.
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