Project Details:

Screening and Selecting Non-Xtend Soybeans for Dicamba Tolerance (with MSSB)

Parent Project: This is the first year of this project.
Checkoff Organization:Missouri Soybean Merchandising Council
Categories:Breeding & genetics, Seed composition
Organization Project Code:455-21
Project Year:2021
Lead Principal Investigator:Pengyin Chen (University of Missouri)
Co-Principal Investigators:
Keywords: breeding and genetics, Seed Composition

Contributing Organizations

Funding Institutions

Information and Results

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Project Summary

Proposed work to evaluate, characterize and develop breeding lines and cultivars with some natural resistance to dicamba (and 2,4-D) to prevent losses due to drift and volatilization.

Project Objectives

1) characterize the differential response to Dicamba drift damage, 2) identify regions of the soybean genome regulating tolerance to Dicamba through genome wide association studies; 3) select and develop soybean lines adapted to mid-south United States with enhanced natural tolerance to Dicamba; and 4) design and implement haplotypes tolerant to Dicamba to fasten the development of tolerant soybean cultivars.

Project Deliverables

1) well characterized differential response in soybean to dicamba drift injuries, 2) high-yielding soybean lines adapted to Mid-south US with enhanced tolerance to Dicamba; 3) identified genomic regions responsible for enhanced Dicamba tolerance and respective haplotypes; and 4) a journal publication reporting the impact of Dicamba injury on soybean yield, and 5) a poster presentation for graduate students at professional conference to share the research findings with the scientific community.

Progress of Work

Final Project Results

Benefit to Soybean Farmers

The selection and development of natural tolerant soybean varieties to Dicamba could potentially benefit Mid-south US growers that are either growing conventional or alternative herbicide-tolerant varieties. Additionally, public breeding programs do not have the access to the Xtend technology for breeding purposes. Therefore, the identification and design of haplotypes with natural enhanced Dicamba tolerance represents a powerful tool to public breeding programs to maintain the flux of their cultivar development pipeline.

Performance Metrics

Project Years