
handle: 10261/14441
[ES] Para evaluar la influencia del sistema de cultivo en la selección de biotipos virulentos de Meloidogyne incognita en Uruguay, se estudió la virulencia de 33 poblaciones de este nematodo procedentes de invernaderos, tanto en monocultivo como en rotación, mediante bioensayos con cultivares de tomate y pimiento resistentes a M. incognita. Se encontraron 36,4% de las poblaciones virulentas a tomate y pimiento resistentes; 33,3% virulentas a tomate resistente, pero no a pimiento; 24,2% avirulentas a tomate y pimiento resistentes y el 6,1% restante presentó virulencia sólo a pimientos portadores de genes de resistencia. Se encontró una asociación positiva entre los monocultivo de tomate o pimiento con cultivares resistentes y la presencia de virulencia en las poblaciones de M. incognita. .
[EN] The virulence of 33 populations of Meloidogyne incognita collected from greenhouses under monoculture and crop rotation was studied to evaluate the influence of the cropping system on the selection of virulent biotypes in Uruguay, using bioassays including cultivars of tomato and pepper, resistant to M. incognita .Over thirty six percent of the populations were virulent on resistant tomato and pepper; 33.3% were virulent on resistant tomato, but not on pepper; 24.2% were avirulent on resistant cultivars of tomato and pepper and 6.1% were virulent only on peppers carrying resistance genes. There was a positive association between monoculture of resistant tomato or pepper and the presence of virulent populations of M. incognita.
Este trabajo forma parte de los proyectos INIA OT 03-006-C7-6 y AGL2002-04040-C05-01 AGR-FOR. Ana Piedra Buena es becaria de la Agencia Española de Cooperación Internacional (AECI-MAEC).
Peer reviewed
Root-knot nematode, Rotation, Resistencia, Greenhouse, Monocultivo, Nematodos formadores de nódulos, Resistance, Manejo de cultivos, Rotación, Monoculture, Invernadero, Crop management
Root-knot nematode, Rotation, Resistencia, Greenhouse, Monocultivo, Nematodos formadores de nódulos, Resistance, Manejo de cultivos, Rotación, Monoculture, Invernadero, Crop management
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