The role of spontaneous palm growths as hosts for Phytophthora Sp. , the causal agent for bud rot in oil palm in Colombia
Author
Martínez, Gerardo
Torres L., Gabriel A.
Acosta, José R.
Ariza, Josué G.
Aya, Héctor A.
Roa, Maro D.
Como citar
Publicación:
Revista Palmas; Vol. 29 Núm. 3 (2008); 45-52
0121-2923
Revista Palmas; Vol. 29 Núm. 3 (2008); 45-52
0121-2923
Abstract
In the study of the alternate hosts of Phytophthora sp. the causal agent of bud rot (PC, for its name in Spanish), it was possible to identify the role of spontaneous palms as alternate host of the disease. In the evaluations conduced in the region of Tumaco on these palms, it was registered an incidence as high as 70 percent, finding in many cases, palms with severity grade of 5 and crater. In the spontaneous palms carried to the laboratory, to be processed, it was possible to observe by microscopy, resistance structures of Phytophthora sp. , and to isolate the pathogen in culture media, from the advance zone of early lesions on these materials. To have been able to identify the presence of Phytophthora sp. in spontaneous palms, ratify the need to improve the agronomical practices, especially the harvesting process, and call the attention to the importance to destroy these palms, as part of the PC control strategy. En el estudio de hospederos alternos de Phytophthora sp. , agente causal de la Pudrición del cogollo (PC), se logró identificar el papel de las palmas espontáneas como hospedero alterno de la enfermedad. En las evaluaciones realizadas en la región de Tumaco sobre estas palmas, se registraron incidencias hasta del 70 por ciento, encontrándose en muchos de los casos, palmas en grados de severidad cinco y en estado de cráter. En las palmas espontáneas llevadas al laboratorio para su procesamiento, fue posible observar al microscopio la presencia de estructuras de resistencia de Phytophthora sp. , y el aislamiento del seudohongo en medio de cultivo, a partir de tejido de la zona de avance de lesión de estos materiales. El haber identificado a Phytophthora sp. , en palmas espontáneas, ratifica la necesidad de mejorar las prácticas agronómicas, en especial las de cosecha, e igualmente plantea la importancia que tiene la erradicación de estas palmas, como parte de la estrategia de control de la PC.
In the study of the alternate hosts of Phytophthora sp. the causal agent of bud rot (PC, for its name in Spanish), it was possible to identify the role of spontaneous palms as alternate host of the disease. In the evaluations conduced in the region of Tumaco on these palms, it was registered an incidence as high as 70 percent, finding in many cases, palms with severity grade of 5 and crater. In the spontaneous palms carried to the laboratory, to be processed, it was possible to observe by microscopy, resistance structures of Phytophthora sp. , and to isolate the pathogen in culture media, from the advance zone of early lesions on these materials. To have been able to identify the presence of Phytophthora sp. in spontaneous palms, ratify the need to improve the agronomical practices, especially the harvesting process, and call the attention to the importance to destroy these palms, as part of the PC control strategy.
Palabras clave:
palma de aceite
elaeis guineensis
pudrición del cogollo
plagas
phytophthora
plantas huéspedes
Colombia
palma de aceite
elaeis guineensis
pudrición del cogollo
plagas
phytophthora
plantas huéspedes
Colombia