Glyphosate-resistant goosegrass population shows impaired translocation patterns

Authors

DOI:

https://doi.org/10.5965/22381171e27580

Keywords:

Eleusine indica, Herbicides, Weeds, Resistance, Non-target site mechanisms

Abstract

Several reports of herbicide resistance in goosegrass have been confirmed worldwide. This work aimed to study a putative glyphosate-resistant goosegrass and investigate some non-target site mechanisms involved. Dose-response studies were conducted in greenhouse conditions. Visual control, and biomass reduction were evaluated 28 days after application. Absorption and translocation studies of 14C-glyphosate were conducted in a growing chamber. The 14C-glyphosate was applied to the third fully expanded leaf and evaluated at 4, 8, 24, 48, and 96 hours after treatment - HAT. The study results showed that the biotype 115-R was identified as resistant to glyphosate with a resistance factor of 6.6 based on GR50. The absorption and translocation studies show different responses among the populations evaluated. The standard susceptible population 18-S has absorbed 58% of 14C-glyphosate while the 115-R absorbed 44% at 96 HAT. Also, the translocated 14C-glyphosate was higher in 18-S (34%) than 115-R (17%). The results indicate impaired absorption and translocation involved in the resistance of 115-R goosegrass population to glyphosate.

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References

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Published

2026-11-05

Issue

Vol. 25 No. 1 (2026)

Section

Research Article - Science of Plants and Derived Products

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How to Cite

Glyphosate-resistant goosegrass population shows impaired translocation patterns. Revista de Ciências Agroveterinárias, v. 25, n. 1, p. 1–12, 5 Nov.2026.

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