Dynamics of Glyphosate Resistance in Lolium perenne: Pollen-Mediated Gene Flow under Field Conditions in Argentina

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 to assess and quantify the effective glyphosate-resistant gene flow by pollen...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Yanniccari, Marcos Ezequiel, Istilart, Carolina, Giménez, Daniel Oscar, Castro, Ana
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Ciencias Agrarias
Ryegrass
Flowering
Weed
Cross-pollination
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125379
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-125379
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
Ryegrass
Flowering
Weed
Cross-pollination
spellingShingle Ciencias Agrarias
Ryegrass
Flowering
Weed
Cross-pollination
Yanniccari, Marcos Ezequiel
Istilart, Carolina
Giménez, Daniel Oscar
Castro, Ana
Dynamics of Glyphosate Resistance in Lolium perenne: Pollen-Mediated Gene Flow under Field Conditions in Argentina
topic_facet Ciencias Agrarias
Ryegrass
Flowering
Weed
Cross-pollination
description 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 to assess and quantify the effective glyphosate-resistant gene flow by pollen in L. perenne under field conditions. Pollen-mediated gene flow from glyphosate-resistant to -susceptible plants was studied using a donor–receptor design. The results indicate that the effective gene flow reached trap plants distanced ≤35 m downwind from the source of pollen. The progeny of receptor plants growing 0 m from the pollen donors showed 13% of individuals with low glyphosate sensitivity. This represents a seven-fold increase in the frequency of glyphosate-resistant individuals found in the progeny of plants isolated during the flowering period (negative control). Similarly, the progenies of plants grown at 15 and 25 m from the source of glyphosate resistance showed an increase in the frequency of resistant plants by about four- and two-fold, respectively. When the receptor plants were located at >35 m, no glyphosate-resistant plants were detected in their progenies. Management should aim for prevention or delay of flowering of glyphosate-resistant plants.
format Articulo
Articulo
author Yanniccari, Marcos Ezequiel
Istilart, Carolina
Giménez, Daniel Oscar
Castro, Ana
author_facet Yanniccari, Marcos Ezequiel
Istilart, Carolina
Giménez, Daniel Oscar
Castro, Ana
author_sort Yanniccari, Marcos Ezequiel
title Dynamics of Glyphosate Resistance in Lolium perenne: Pollen-Mediated Gene Flow under Field Conditions in Argentina
title_short Dynamics of Glyphosate Resistance in Lolium perenne: Pollen-Mediated Gene Flow under Field Conditions in Argentina
title_full Dynamics of Glyphosate Resistance in Lolium perenne: Pollen-Mediated Gene Flow under Field Conditions in Argentina
title_fullStr Dynamics of Glyphosate Resistance in Lolium perenne: Pollen-Mediated Gene Flow under Field Conditions in Argentina
title_full_unstemmed Dynamics of Glyphosate Resistance in Lolium perenne: Pollen-Mediated Gene Flow under Field Conditions in Argentina
title_sort dynamics of glyphosate resistance in lolium perenne: pollen-mediated gene flow under field conditions in argentina
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/125379
work_keys_str_mv AT yanniccarimarcosezequiel dynamicsofglyphosateresistanceinloliumperennepollenmediatedgeneflowunderfieldconditionsinargentina
AT istilartcarolina dynamicsofglyphosateresistanceinloliumperennepollenmediatedgeneflowunderfieldconditionsinargentina
AT gimenezdanieloscar dynamicsofglyphosateresistanceinloliumperennepollenmediatedgeneflowunderfieldconditionsinargentina
AT castroana dynamicsofglyphosateresistanceinloliumperennepollenmediatedgeneflowunderfieldconditionsinargentina
bdutipo_str Repositorios
_version_ 1764820451575463938

Ejemplares similares