Project Details:

Title:
Accelerating Development of Soybean Varieties with Advanced Herbicide-Tolerant Trait Technologies

Parent Project: This is the first year of this project.
Checkoff Organization:South Carolina Soybean Board
Categories:Breeding & genetics, Soybean Variety Trials, Sustainability
Organization Project Code:
Project Year:2020
Lead Principal Investigator:Zenglu Li (University of Georgia)
Co-Principal Investigators:
Keywords: herbicide tolerance, herbicides, Soybean Breeding

Contributing Organizations

Funding Institutions

Information and Results

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Project Summary

Soybeans are the world's largest source of animal protein feed and the second largest source of vegetable oil. The United States is the leading soybean producer and exporter. Increasing yield and reducing the cost of production is imperative to increase soybean production in the Southeast. Weeds are a major production problem in the southeastern region and development of herbicide tolerance cultivars with pest resistance will help farms control weeds and reduce production cost.

Using Monsanto (Bayer now) 2nd generation glyphosate tolerance technology–RR2 Yield®, we have developed strong pipeline materials of soybean. Three RR2Y cultivars were released in 2014 and one RR2Y cultivar released in 2016. Currently, three RR2Y lines (MG VI, VII and VIII) have been yield tested in the regional trials for 2-3 years, which exceeded the yield of commercial checks for 5-17%, respectively. Recently, the control of glyphosate-tolerant weeds in RR soybeans (i.e., palmer amaranth) has become a serious soybean production problem in the USA, especially in the southeastern region of the USA

To provide soybean growers with advanced herbicide-tolerant trait technologies for better weed control, we have accessed to LibertyLink technology from BASF in 2010, RR2 Xtend technology from Bayer, and Enlist E3 technology from Corteva in 2019. These new technologies employ multiple modes of action against the most difficult weeds and provide excellent weed control in soybean production. Coupling with strong soybean genetics developed at UGA, these technologies will provide Southeastern soybean growers with the opportunity to use the efficient and cost effective herbicide technology with high yield performance. The Objective of this proposal is to accelerate development of soybean varieties with advanced herbicide-tolerant trait technologies (RR2 Xtend, Enlist E3 and LibertyLink) as well as pest resistance using state-of-art genomic technology.

Project Objectives

Accelerating development of soybean varieties with advanced herbicide-tolerant trait technologies (RR2 Xtend, Enlist E3 and LibertyLink) as well as disease and pest resistance using state-of-art genomic technology for Southeastern soybean growers

Project Deliverables

1) Produce seed of four backcrossed RR2Y Xtend lines using 4 RR2Y lines by the end of 2020 for further evaluation of agronomic traits and yield
2) Produce seed of four backcrossed Enlist E3 lines using 3 conventional lines by the end of 2020 for further evaluation of agronomic traits and yield
3) Complete yield test of 2 LibertyLink lines in SVT by the end of 2020
4) Advance 3 high yielding LibertyLink lines for USDA Uniform Tests in 2020
5) Form 10 additional crosses with best UGA germplasm using new herbicide tolerance technology in the summer of 2020

Progress of Work

Updated April 26, 2020:

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Updated August 1, 2020:

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Updated November 2, 2020:

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Updated January 4, 2021:

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Final Project Results

Benefit to Soybean Farmers

Southeastern soybean growers will be the primary beneficiaries of this research through their reduced production costs and higher seed yields with advanced herbicide-tolerant trait technologies and nematode resistance that are of greater value to the poultry and swine industries. A higher protein meal will better suit the requirements of feed manufacturers and poultry and swine producers. An enhanced profitability for soybean would expand the level of rotation with other major crops. The increased rotation with soybean will result in improved other crop production and reduced chemical inputs.

Performance Metrics

1) Complete backcrossing for 4 RR2Y Xtend lines
2) Complete backcrossing for 3 Enlist E3 lines
3) Form 10 additional crosses with best UGA germplasm
4) Advance 3 high yielding LibertyLink lines into USDA Uniform Tests

Project Years