Next Article in Journal
Transcriptomic Analysis of Banana in Response to Phosphorus Starvation Stress
Next Article in Special Issue
First Case of Conyza canadensis from Hungary with Multiple Resistance to Glyphosate and Flazasulfuron
Previous Article in Journal
Statistical Modeling of Phenotypic Plasticity under Abiotic Stress in Triticum durum L. and Triticum aestivum L. Genotypes
Article Menu
Issue 8 (August) cover image

Export Article

Open AccessArticle
Agronomy 2018, 8(8), 140; https://doi.org/10.3390/agronomy8080140

First Report of Amaranthus hybridus with Multiple Resistance to 2,4-D, Dicamba, and Glyphosate

1
Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Esperanza 3080, Argentina
2
Consejo Nacional de Investigaciones Científicas Y Técnicas, CABA, C1425FQB, Godoy Cruz 2290, Argentina
3
Agencia De Extensión Rural San Francisco, Instituto Nacional de Tecnología Agropecuaria, San Francisco 2400, Argentina
4
Departamento de Química Agrícola y Edafología, Universidad de Córdoba, Cordoba 14014, Spain
5
Escuela Superior de Agricultura Luiz de Queiroz, Universidad de Sao Paulo, Piracicaba 13418-900, Brazil
*
Author to whom correspondence should be addressed.
Received: 10 July 2018 / Revised: 30 July 2018 / Accepted: 3 August 2018 / Published: 6 August 2018
(This article belongs to the Special Issue Weed Management & New Approaches)
Full-Text   |   PDF [1629 KB, uploaded 27 August 2018]   |  

Abstract

In many countries, Amaranthus hybridus is a widespread weed in agricultural systems. The high prolificacy and invasive capacity as well as the resistance of some biotypes to herbicides are among the complications of handling this weed. This paper reports on the first A. hybridus biotypes with resistance to auxinic herbicides and multiple resistance to auxinic herbicides and the EPSPs inhibitor, glyphosate. Several dose response assays were carried out to determine and compare sensitivity of six population of A. hybridus to glyphosate, 2,4-D, and dicamba. In addition, shikimic acid accumulation and piperonil butoxide effects on 2,4-D and dicamba metabolism were tested in the same populations. The results showed four populations were resistant to dicamba and three of these were also resistant to 2,4-D, while only one population was resistant to glyphosate. The glyphosate-resistant population also showed multiple resistance to auxinic herbicides. Pretreatment with piperonil butoxide (PBO) followed by 2,4-D or dicamba resulted in the death of all individual weeds independent of herbicide or population. View Full-Text
Keywords: herbicide resistance; amarantaceae; smooth pigweed herbicide resistance; amarantaceae; smooth pigweed
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Dellaferrera, I.; Cortés, E.; Panigo, E.; De Prado, R.; Christoffoleti, P.; Perreta, M. First Report of Amaranthus hybridus with Multiple Resistance to 2,4-D, Dicamba, and Glyphosate. Agronomy 2018, 8, 140.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Agronomy EISSN 2073-4395 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top