IDENTIFICATION AND EPIDEMIOLOGY OF CANDIDATUS PHYTOPLASMA PRUNORUM IN SPANISH PEACH ORCHARDS. SUSCEPTIBILITY OF DIFFERENT ROOTSTOCKS TO THE DISEASE
The European stone fruit yellows disease caused by Candidatus Phytoplasma prunorum was identified in peach and nectarine Spanish orchards. The incidence of the disease in the affected plots ranked between 5 and 25%. The main symptoms observed were chlorosis, leaf roll, decline and occasionally death of the tree. The insect vector of Ca. P. prunorum, the psillid Cacopsylla pruni, was found in affected plots of Catalonia and Extremadura from March to July. The maximum population was found during the month of May and the first weeks of June, depending of the area. The mean percentage of individuals of C. pruni carriers of the phytoplasma was around 10% in Extremadura, 15% in plots of Baix Llobregat (Catalonia) and 7% in plots of Ribera dEbre (Catalonia). Individuals of C. pruni have not been identified yet in the fruit tree area of Lleida (Catalonia) where the incidence of the disease is low.
Batlle, A., Sabaté, J., Iglesias, I. and Laviña, A. (2012). IDENTIFICATION AND EPIDEMIOLOGY OF CANDIDATUS PHYTOPLASMA PRUNORUM IN SPANISH PEACH ORCHARDS. SUSCEPTIBILITY OF DIFFERENT ROOTSTOCKS TO THE DISEASE. Acta Hortic. 962, 443-447
phytoplasma, ESFY, peach yellows, transmission, vectors, C. pruni