Resumen

HERRERA M., Guido  y  MADARIAGA V., Mónica. Natural spread of the virus causing Sharka disease (Plum pox virus, PPV) during three seasons in an apricot orchard. Agric. Téc. [online]. 2003, vol.63, n.2, pp.202-206. ISSN 0365-2807.  http://dx.doi.org/10.4067/S0365-28072003000200009.

The spread of Plum pox virus (PPV) was studied in an apricot (Prunus armeniaca L.) orchard established with healthy material in 1995 in the Metropolitan Region of Chile. The orchard was established in an area with high inoculum pressure with three cultivars: Dina, Castelbrite and Katy. The assessment of the trees was made every year by observation of symptoms and using policlonal antibodies for PPV. The strain found in the orchard was PPV-D (Dideron). Differences in the rate of PPV spread were observed among the cultivars. The spread of PPV in 1999, 2000 and 2001 was 6.6, 14.1 and 26.7%; 0, 0.6 and 3.3%; y 0, 0.5, and 2.1% for cvs. Dina, Castelbrite and Katy, respectively.

Palabras clave : epidemiology; Prunus armeniaca L.; Sharka disease.