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ARS Home » Pacific West Area » Pullman, Washington » WHGQ » Research » Research Project #444692

Research Project: Genetics and Phenomics of Pacific Northwest Weeds

Location: Wheat Health, Genetics, and Quality Research

Project Number: 2090-22000-019-012-S
Project Type: Non-Assistance Cooperative Agreement

Start Date: Aug 1, 2023
End Date: Jul 31, 2028

The objectives of this cooperative research are to: 1) determine the biotic and abiotic factors that impact the germination and root and shoot growth of weed seeds in soil and in vitro; 2) identify loci of herbicide-resistant weed seed in the field, and develop tools to track the movement of those genetic variants throughout the agricultural landscape; 3) collaborate with others to determine how the soil microbiome affects weed seed longevity and survival in the soil seed bank; and 4) collaborate in development of models to predict the risk of herbicide resistance development.

Weed species and seeds will be collected from experimental and commercial fields and identified and quantified using classical weed science and novel phenomics approaches. The impact of biotic and abiotic factors on weed seed germination and root and shoot growth will be tested under controlled conditions in soil and in vitro. The presence of herbicide-resistance weeds will be determine by treating plants with various herbicides and by molecular approaches. The the soil microbiome associated with weed seeds will be characterized by Next-Generation sequencing. Models to predict the risk of developing herbicide resistance in weeds will focus on the type and and frequency of application of herbicides and the and the type of cropping system used.