Estudio de la resistencia de Conyza spp. al herbicida glifosato en Aragón
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Date
2015
Authors
Langa Lomba, RaúlAibar Lete, Joaquín
Cirujeda Ranzenberger, Alicia
Marí León, Ana Isabel
León Navarro, María José
Pardo Sanclemente, Gabriel
Journal Title
Journal ISSN
Volume Title
Publisher
Junta de Andalucía
Typology
Proceedings Paper , conferenceObjectArticle
Abstract
El objetivo del trabajo fue confirmar la resistencia a glifosato de poblaciones aragonesas de “Conyza canadensis” y “C. sumatrensis”. Para ello, se contó con 7 poblaciones de “C. canadensis”: 6 de ellas con problemas de control en campo (R) y 1 considerada sensible (S) y 4 de “C. sumatrensis”: 3R y 1S. Con ellas se realizaron ensayos dosis-respuesta utilizando un modelo de regresión (log-logistic con 4 parámetros) y se calcularon los factores de resistencia (FR). Se confirmó la resistencia de 5 de las 6 poblaciones problemáticas “C. canadensis”, con FR para parámetros de supervivencia y biomasa mucho mayores de 10. En el caso de “C. sumatrensis”, en 2 de las 3 poblaciones consideradas R se encontraron resistencia con unos FR que oscilaron entre 9,4 y 3,5 para los mismos parámetros.
The aim of this paper was to confirm resistance to glyphosate of Conyza canadensis and C. sumatrensis populations from Aragón. Hence, we had 7 populations of C. canadensis: 6 of them with field control problems (R) and 1 considered susceptible (S) and 4 populations of C. sumatrensis: 3R and 1S. Doses-response essays were performed and the resistance factors (RF) were calculated using a log-logistic regression model with 4 parameters. Results confirmed resistance in 5 of 6 C. canadensis populations, with RF for survival and biomass parameters much higher than 10. In the case of C. sumatrensis, 2 of 3 populations expected to be R had RF with values between 9.4 and 3.5 for the same parameters.
The aim of this paper was to confirm resistance to glyphosate of Conyza canadensis and C. sumatrensis populations from Aragón. Hence, we had 7 populations of C. canadensis: 6 of them with field control problems (R) and 1 considered susceptible (S) and 4 populations of C. sumatrensis: 3R and 1S. Doses-response essays were performed and the resistance factors (RF) were calculated using a log-logistic regression model with 4 parameters. Results confirmed resistance in 5 of 6 C. canadensis populations, with RF for survival and biomass parameters much higher than 10. In the case of C. sumatrensis, 2 of 3 populations expected to be R had RF with values between 9.4 and 3.5 for the same parameters.
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Bibliographic citation
XV Congreso de la Sociedad Española de Malherbología: La Malherbología y la transferencia tecnológica: Sevilla, 19 - 22 octubre 2015, p. 99
AGROVOC subjects
Resistencia a los herbicidasConyza
Glifosato
Other field subjects
sanidad vegetalAragón