ETIOLOGÍA DE LA MUERTE DESCENDENTE DEL DURAZNERO [PRUNUS PERSICA (L.) BATSCH] EN LOS MUNICIPIOS DE MANIZALES Y VILLAMARÍA, DEPARTAMENTO DE CALDAS

Luz Dary Rivera- Hoyos; Jairo Castaño- Zapata

doi:10.18257/raccefyn.35(134).2011.2487

Vol. 35 No. 134 (2011), Natural Sciences

Vol. 35 No. 134 (2011)

ETIOLOGY OF THE DIEBACK OF PEACH [PRUNUS PERSICA (L.) BATSCH] IN THE MUNICIPALITIES OF MANIZALES AND VILLAMARÍA, OF CALDAS DEPARTMENT

Natural Sciences

https://doi.org/10.18257/raccefyn.35(134).2011.2487

Published 2023-12-22

Luz Dary Rivera- Hoyos⁺⁻
Jairo Castaño- Zapata⁺⁻

Luz Dary Rivera- Hoyos

Maestría en Fitopatología, Universidad de Caldas.

Jairo Castaño- Zapata

Coordinador Maestría en Fitopatología, Facultad de Ciencias Agropecuarias, Universidad de Caldas,

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How to Cite

Rivera- Hoyos, L. D., & Castaño- Zapata, J. (2023). ETIOLOGY OF THE DIEBACK OF PEACH [PRUNUS PERSICA (L.) BATSCH] IN THE MUNICIPALITIES OF MANIZALES AND VILLAMARÍA, OF CALDAS DEPARTMENT. Revista De La Academia Colombiana De Ciencias Exactas, Físicas Y Naturales, 35(134), 61–69. https://doi.org/10.18257/raccefyn.35(134).2011.2487

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Abstract

A disease in peach trees [Prunus persica (L.) Batsch] was dectected in the municipalities of Villamaría and Manizales (Caldas) with an incidence of 100%. The symptoms of the disease were flaccidity of the leaves, defoliation and drying of branches. Infected plants showed lesions resembling cankers with gum exudation. A Gram negative and fluorescent bacterium was isolated from diseased tissues in King´s B and nutrient agar media. The LOPAT tests showed: levano positive; oxidase, potato soft rot, arginine dihydrolase negative; and positive tobacco hypersensitivity reaction in tobacco plants. The pathogenicity of the bacterium was demonstrated by inoculating one year old peach trees, which showed similar symptoms to those observed in the field. Both biochemical and physiological tests indicated that the bacterium causing the dieback in peach at the department of Caldas belongs to Pseudomonas syringae pv. syringae

https://doi.org/10.18257/raccefyn.35(134).2011.2487

Keywords

bacterium | Dieback | peach | pathogenicity | Pseudomonas syringae

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