A generalised individual-based algorithm for modelling the evolution of quantitative herbicide resistance in arable weed populations
Authored by Chun Liu, Melissa E Bridges, Shiv S Kaundun, Les Glasgow, Micheal D K Owen, Paul Neve
Date Published: 2017
DOI: 10.1002/ps.4317
Sponsors:
No sponsors listed
Platforms:
NetLogo
Model Documentation:
ODD
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Mathematical description
Model Code URLs:
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Abstract
BACKGROUND: Simulation models are useful tools for predicting and
comparing the risk of herbicide resistance in weed populations under
different management strategies. Most existing models assume a monogenic
mechanism governing herbicide resistance evolution. However, growing
evidence suggests that herbicide resistance is often inherited in a
polygenic or quantitative fashion. Therefore, we constructed a
generalised modelling framework to simulate the evolution of
quantitative herbicide resistance in summer annual weeds.
RESULTS: Real-field management parameters based on Amaranthus
tuberculatus (Moq.) Sauer (syn. rudis) control with glyphosate and
mesotrione in Midwestern US maize-soybean agroecosystems demonstrated
that the model can represent evolved herbicide resistance in realistic
timescales. Sensitivity analyses showed that genetic and management
parameters were impactful on the rate of quantitative herbicide
resistance evolution, whilst biological parameters such as emergence and
seed bank mortality were less important.
CONCLUSION: The simulation model provides a robust and widely applicable
framework for predicting the evolution of quantitative herbicide
resistance in summer annual weed populations. The sensitivity analyses
identified weed characteristics that would favour herbicide resistance
evolution, including high annual fecundity, large resistance phenotypic
variance and pre-existing herbicide resistance. Implications for
herbicide resistance management and potential use of the model are
discussed. (C) 2016 Society of Chemical Industry
Tags
individual-based models
Evolution
Plants
Cropping systems
Glyphosate resistance
Waterhemp amaranthus-rudis
Common waterhemp
Inhibiting herbicides
Giant foxtail
Tuberculatus
Seed
Delay
Quantitative resistance
Amaranthus
tuberculatus sauer
Weed management
Polygenic resistance