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Mostrando ítems 1-20 de 28
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A novel EPSPS Pro-106-His mutation confers the first case of glyphosate resistance in Digitaria sanguinalis
(Wiley, 2022-04)BACKGROUND: Digitaria sanguinalis has been identified as a species at high risk of evolving herbicide resistance, but thus far, there are no records of resistance to glyphosate. This species is one of the most common weeds ... -
Assessing the glyphosate tolerance of Lotus corniculatus and L. tenuis to perform rhizoremediation strategies in the Humid Pampa (Argentina)
(2016)The broad-spectrum herbicide glyphosate (N – phosphonomethylglicine) is the most common pesticide used in the Humid Pampa, the main agricultural region in Argentina. According to agronomical practices and topogeographical ... -
Broad resistance to acetohydroxyacid-synthase-inhibiting herbicides in feral radish (Raphanus sativus L.) populations from Argentina
(2016-02)BACKGROUND: Soon after the commercial release of sunflower cultivars resistant to imidazolinone herbicides, several uncontrolled feral radish (Raphanus sativus L.) populations were found in south-eastern Buenos Aires, ... -
Comparison of premix glyphosate and 2,4-D formulation and direct tank mixture for control of Conyza canadensis and Epilobium ciliatum
(Elsevier, 2021-07)Premix or tank mix of glyphosate and 2,4-D are a good alternative to control glyphosate-resistant and -tolerant weeds; however, the combination of herbicides may increase the environmental impacts, since mixtures often ... -
Constitutive overexpression of EPSPS by gene duplication is involved in glyphosate resistance in Salsola tragus
(Wiley, 2022-11)Background: Glyphosate-resistant Salsola tragus accessions have been identified in the USA and Argentina; however, the mechanisms of glyphosate resistance have not been elucidated. The goal of this study was to determine ... -
¿Cuánto paga una maleza por ser resistente a un herbicida?
(2015-08)La resistencia a herbicidas suele tener un costo energético para las malezas. Esto se traduce en una menor producción de semillas comparado a las plantas susceptibles. El conocimiento de estos aspectos ecológicos permite ... -
Distribución y abundancia de malezas resistentes y tolerantes a herbicidas en el noroeste de la Prov. de Bs. As.
(EEA Pergamino, Malezas, 2019-03)En el presente trabajo, correspondiente al período primavera-verano 2018-19, se continuó con el registro de la evolución de la distribución de malezas resistentes y tolerantes a herbicidas en el NO de la Provincia de Buenos ... -
Dynamics of glyphosate resistance in Lolium perenne: pollen-mediated gene flow under field conditions in Argentina
(MDPI, 2018-11)The genus Lolium has shown a high tendency to evolve resistance to herbicides. Considering the high level of allogamy of L. perenne and the importance of the wind as an agent for pollen dispersion, the aim of this work was ... -
Efecto de la calidad de aplicación, sobre el control de Conyza sumatrensis en dos estados de desarrollo
(Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, 2016)Conyza sumatrensis es una maleza muy difundida en Entre Ríos, (Argentina) y de difícil control. Todos los individuos de la especie son tolerantes a herbicidas en estados de desarrollo avanzados y a su vez existen biotipos ... -
Efecto del glifosato sobre el crecimiento y acumulación de azúcares libres en dos biotipos de lolium perenne de distinta sensibilidad al herbicida = Glyphosate effects on the growth and free sugar accumulation of two lolium perenn e biotypes with different herbicide sensitivity
(Sociedade Brasileira da Ciência das Plantas Daninhas, 2012-03)El movimiento sistémico del glifosato está determinado por el transporte de fotoasimilados. A su vez, la capacidad de un destino de consumir los asimilados está condicionada por su actividad metabólica. Pese a su importancia, ... -
Effects of glyphosate on the movement of assimilates of two Lolium perenne L. populations with differential herbicide sensitivity
(2012-10)Glyphosate applications trigger the depletion of aromatic amino acid pools and the decrease of photosynthesis that results in changes in carbon metabolism. The aim of this work was to determine the effect of glyphosate on ... -
Estado de situación del uso de herbicidas en cultivos extensivos agrícolas de la región noroeste de la provincia de Buenos Aires y el impacto ambiental asociado
(Ediciones INTA, 2018-11)En los sistemas agrícolas actuales se ha observado un importante incremento de las dosis y frecuencias de aplicaciones de herbicidas, siendo una causa determinante la aparición de biotipos de malezas resistentes. En este ... -
Estudio fisiológico y genético de biotipos de Lolium perenne L. resistentes a glifosato
(Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 2014)En este trabajo se pretende dar respuesta a ciertas cuestiones que permitan aportar conocimientos de impacto para la actividad productiva, en tanto se buscará responder: ¿El deficiente control de Lolium perenne con glifosato ... -
La evolución del ryegrass resistente a glifosato en la región
(2015-05)El ryegrass resistente a glifosato constituye una de las malezas difíciles en la producción de cereales de invierno. La genética de las plantas resistentes juega un rol crucial en la evolución de la resistencia, por lo ... -
Glyphosate resistance in perennial ryegrass (Lolium perenne L.) from Argentina
(2012-02)In Argentina, glyphosate is the most widely used herbicide. A population of perennial ryegrass, subjected to two glyphosate applications per year during twelve years, was putatively identified as glyphosate-resistant based ... -
Glyphosate resistance in perennial ryegrass (Lolium perenne L.) is associated with a fitness penalty
(2016)The net selection effect of herbicides on herbicide-resistance traits in weeds is conditioned by the fitness benefits and costs associated with resistance alleles. Fitness costs play an important evolutionary role preventing ... -
Herbicide-resistant weeds from dryland agriculture in Argentina
(Wiley, 2024-01)We reviewed and performed a quantitative synthesis on herbicide-resistant weeds from rain-fed crops in Argentina. Twenty-four weed species distributed in the main extensive crops (soybean, maize, wheat, barley, oilseed ... -
IMI resistance associated to crop-weed hybridization in a natural Brassica rapa population: characterization and fate
(2017-03)Wild turnip (Brassica rapa) is a common weed and a close relative to oilseed rape (Brassica napus). The Clearfield® production system is a highly adopted tool which provides an alternative solution for weed management, but ... -
Inheritance of glyphosate resistance in Lolium perenne and hybrids with Lolium multiflorum
(2015-05)Glyphosate-resistant Lolium species have been selected in weed communities where glyphosate is the herbicide used almost exclusively for weed control. The rate of evolution of herbicide resistance is highly influenced by ... -
Las malezas se defienden: resistencia a múltiples herbicidas
(2017-04)A nivel mundial, en la última década el número de malezas resistentes a más de un herbicida se ha incrementado en un 75 %. En nuestra región, el ryegrass no se queda atrás y cada vez es más frecuente la resistencia a varios ...