Severe outbreaks of strawberry crown and root charcoal rot caused by Macrophomina phaseolina in Tucumán, Argentina = Ataques severos de podredumbre carbonosa de corona y raíz en frutilla causada por Macrophomina phaseolina en Tucumán, Argentina
Tucumán province is one of the most important strawberries growers in Argentina. The strawberry crown and root charcoal rot is a soilborne disease caused by the fungus Macrophomina phaseolina. This disease is spread worldwide and M. phaseolina one of the most economically important fungal pathogens. The objective of this study was to determine the susceptibility of different strawberry cultivars to M. phaseolina under field conditions. The evaluation was carried out at INTA-Famaillá in Tucumán, Argentina. Fresh-dug strawberry plants form cultivars ‘Macarena’, ‘Treasure’, ‘Pájaro’, ‘Ruby Gem’, ‘Carmela’, ‘Camino Real’, ‘Albion’, ‘Ventana’, ‘Camarosa’ and ‘Palomar’ were evaluated. All evaluated plants showed decline and death but the pathogens isolated differed among cultivars. Fusarium oxysporum was co-isolated with M. phaseolina in ‘Camarosa’, ‘Camino Real’, ‘Albion’, ‘Carmela’, ‘Treasure’ and ‘Pájaro’. Pure isolates of M. phaseolina were obtained from ‘Ruby Gem’ and ‘Macarena’. Pure isolates of Fusarium spp. were obtained from ‘Palomar’. Plant losses and disease ratings due to M. phaseolina were greater for ‘Macarena’, ‘Treasure’ and ‘Pajaro’, followed by, ‘Ruby Gem’ and ‘Carmela’ than for ‘Palomar’ and ‘Camarosa’, which appeared to be more tolerant to plant decline. This study demonstrates the differential tolerance to M. phaseolina of currently available strawberry cultivars in Tucumán, Argentina.
| Main Authors: | , , , , |
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| Format: | info:ar-repo/semantics/artículo biblioteca |
| Language: | eng |
| Published: |
Facultad de Agronomía y Zootecnia, Universidad Nacional de Tucumán
2017-12
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| Subjects: | Fresa, Fragaria ananassa, Macrophomina phaseolina, Enfermedades de las Plantas, Podredumbre de la Raíz, Podredumbres, Strawberries, Plant Diseases, Root Rots, Rots, Frutilla, Tucumán, Argentina, |
| Online Access: | http://www.faz.unt.edu.ar/ranar/ranar37203.pdf http://hdl.handle.net/20.500.12123/5234 |
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