Caracterización biológica del Virus de la mancha anular de la papaya en Carica papaya L. var. Maradol roja en Cuba
Fecha
2012-06-29
Autores
Pérez Batista, Odleny
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Editor
Universidad Central ´´Marta Abreu´´ de Las Villas
Resumen
El Virus de la mancha anular de la papaya (PRSV) se encuentra extendido en la mayoría de las zonas productoras de Carica papaya en Cuba. A pesar de su distribución y daños que produce, los estudios epifitiológicos de este virus son limitados. El objetivo de esta investigación fue determinar la virulencia de aislados del PRSV, así como la identificación de especies de áfidos y la eficiencia en la transmisión del virus en papaya var. Maradol roja. Con este propósito, los aislados del PRSV colectados en zonas productoras de papaya en Cuba, se inocularon de forma mecánica en plantas jóvenes. Para la identificación de las especies de áfidos que frecuentan las plantaciones de papaya en Santo Domingo, se realizaron colectas mediante el uso de trampas Moericke. Se evaluó la eficiencia de Aphis craccivora, Toxoptera citricidus y Rhopalosiphum maidis en la transmisión del PRSV. Se confirmó la presencia del PRSV en las muestras de papaya colectadas y los aislados de Palma Soriano, San José de las Lajas, Guáimaro y Puerto
Padre fueron los más virulentos. De las 16 especies de áfidos identificadas en las
plantaciones de papaya, Aphis gossypii y Aphis citricola fueron las más abundantes. Se informó por primera vez en Cuba, la transmisión del PRSV por T. citricidus, R. maidis y A. craccivora, este último resultó la especie de mayor eficiencia en la transmisión.
Papaya ringspot virus is extended in the most production areas of Carica papaya in Cuba. Despite its distribution and damages that produce, epidemiology studies of this virus are limited. The aim of this investigation was to evaluate the virulence of PRSV isolates, as well as the identification of aphid species and the efficiency of virus transmission in papaya cv. Maradol roja. With this purpose, PRSV isolates collected in papaya production areas in Cuba, were mechanically inoculated in juvenile plants. For the identification of aphid species that frequent papaya plantations in Santo Domingo, insects were collected by means of Moericke traps. It was evaluated the efficiency of PRSV transmission by Aphis craccivora, Toxoptera citricidus and Rhopalosiphum maidis. The presence of PRSV was confirmed in all papaya samples collected, and the Palma Soriano, San José de las Lajas, Guáimaro and Puerto Padre isolates were the most virulents. From the 16 identified aphid species in papaya plantations, Aphis gossypii and Aphis citricola were largely abundant. In this investigation, it was informed for the first time in Cuba, the PRSV transmission by T. citricidus, R. maidis and A. craccivora, the latter showed the greater transmission efficiency.
Papaya ringspot virus is extended in the most production areas of Carica papaya in Cuba. Despite its distribution and damages that produce, epidemiology studies of this virus are limited. The aim of this investigation was to evaluate the virulence of PRSV isolates, as well as the identification of aphid species and the efficiency of virus transmission in papaya cv. Maradol roja. With this purpose, PRSV isolates collected in papaya production areas in Cuba, were mechanically inoculated in juvenile plants. For the identification of aphid species that frequent papaya plantations in Santo Domingo, insects were collected by means of Moericke traps. It was evaluated the efficiency of PRSV transmission by Aphis craccivora, Toxoptera citricidus and Rhopalosiphum maidis. The presence of PRSV was confirmed in all papaya samples collected, and the Palma Soriano, San José de las Lajas, Guáimaro and Puerto Padre isolates were the most virulents. From the 16 identified aphid species in papaya plantations, Aphis gossypii and Aphis citricola were largely abundant. In this investigation, it was informed for the first time in Cuba, the PRSV transmission by T. citricidus, R. maidis and A. craccivora, the latter showed the greater transmission efficiency.
Descripción
Palabras clave
Carica papaya L. Var. Maradol, Cuba, Virus