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Agricultura Técnica

versión impresa ISSN 0365-2807


SEPULVEDA R, Paulina et al. Identification and Incidence of Pepper Viruses in North Central Chile and its Association with Vectors. Agric. Téc. [online]. 2005, vol.65, n.3, pp.235-245. ISSN 0365-2807.

During the 2001-2002 and 2002-2003 seasons, a virus survey was carried out on peppers (Capsicum annuum L.) in different locations of the Region of Coquimbo (29,5-32° S lat.). The DAS- ELISA test was used for virus detection. The relative importance of the viruses encountered was as follows: Cucumber mosaic virus (CMV) 23.3%; Tomato spotted wilt virus (TSWV) 20.8%; Alfalfa mosaic virus (AMV) 14.8%; Potato virus Y (PVY) 14.5%; Impatients necrotic spot virus  (INSV) 3.1% (first identification in peppers in Chile); Tomato mosaic virus (ToMV) 2.2% and Tobacco mosaic virus (TMV)  4.9%  The results also indicated that nearly 30% of the samples were infected with two or more viruses. The incidence of the viruses was different for each location and season, and was affected greatly by the sanitary condition of the plants at transplanting. When healthy plants were used to start a crop, the incidence of viruses at the end of the season was lower.  The Western flower thrip, Frankliniella occidentalis (Pergande) was considered as the most important vector of TSWV and INSV, while the Green peach aphid, Myzus persicae (Sulzer), and Potato aphid Macrosiphum eurphobiae (Thomas), were the most important species as vectors of CMV, PVY and AMV.  The presence of these viruses in the crops was related directly with the presence of these aphids  in traps and on plants.

Palabras clave : pepper virus; insect vectors; Tomato spotted wilt virus; Cucumber mosaic virus; Alfalfa mosaic virus; Potato virus Y; ELISA.

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