Identification and Mapping of Cross-Resistance Patterns to ALS-Inhibitors in Greater Beggarticks (Bidens spp.)
ABSTRACT: Greater beggarticks (Bidens pilosa and Bidens subalternans) biotypes have been under selection pressure of ALS-inhibitors since early 90’s in Brazil. The objectives of this work were to investigate whether there are different cross-resistance patterns among ALS-inhibitors herbicides in Bidens spp. biotypes; to understand the geographic distribution of resistance patterns in grains producing regions in Brazil; and evaluate the possibility of multiple resistance to ALS-inhibitors, EPSPs inhibitor and photosystem II inhibitors. Dose-response experiments were carried out with imazethapyr, chlorimuron and diclosulam in three populations. Sensibility to others 34 populations both from Paraná State (PR) and from others Brazilian regions were also evaluated. The dose-response assay revealed cross-resistance with different patterns. One population was resistant to all three herbicides, the second population was tolerant to both imazethapyr and chlorimuron, but not to diclosulam, while a third population was resistant merely to imazethapyr. The results exhibited different cross-resistance patterns, since they can be found in other Bidens spp. populations. However, no relationship was observed between geographic areas where samples were collected and resistance patterns. Conclusively, the most frequent resistance pattern was R2 (resistance to imazethapyr, chlorimuron and diclosulam).
Main Authors: | MENDES,R.R., OLIVEIRA JR.,R.S., CONSTANTIN,J., SILVA,V.F.V., HENCKS,J.R. |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Sociedade Brasileira da Ciência das Plantas Daninhas
2019
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100187 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Competitiveness of ALS inhibitors resistant and susceptible biotypes of Greater Beggarticks (Bidens subalternans)
by: Lamego,F.P., et al.
Published: (2011) -
Multiple resistance to atrazine and imazethapyr in hairy beggarticks (Bidens pilosa )
by: Takano,Hudson Kagueyama, et al.
Published: (2016) -
Hairy beggarticks (Bidens pilosa L.-Asteraceae) control in sunflower fields using pre-emergence herbicides.
by: BRIGHENTI, A. M.
Published: (2018-11-19) -
Target and Non-target Site Mechanisms Developed by Glyphosate-Resistant Hairy beggarticks (Bidens pilosa L.) Populations from Mexico
by: Alcántara de la Cruz, Ricardo, et al.
Published: (2016-10-03) -
Competitive ability of sweet sorghum (Sorghum bicolor (L.) Moench) cultivars against hairy beggarticks (Bidens pilosa L.).
by: GALON, L., et al.
Published: (2023-01-13)