Project Details:

Breeding and Genetic Mapping for Flooding Tolerance in Soybean

Parent Project: Breeding and Genetic Mapping for Flooding Tolerance in Soybean
Checkoff Organization:Missouri Soybean Merchandising Council
Categories:Breeding & genetics, Research coordination, Seed composition
Organization Project Code:319-19
Project Year:2019
Lead Principal Investigator:Pengyin Chen (University of Missouri)
Co-Principal Investigators:
Keywords: breeding and genetics, Research coordination, Seed Composition

Contributing Organizations

Funding Institutions

Information and Results

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Project Summary

The objective of this research is to develop new flood tolerant soybean varieties for the Missouri Delta region and Mid-South environments. Breeding varieties with flood tolerance for higher yields, disease and nematode resistance and quality traits.

Project Objectives

To improve soybean tolerance to waterlogging/flooding.
1. Screen diverse soybean germplasm and identify source(s) of genetic tolerance to flooding.
2. Incorporate flood tolerance from identified source(s) into elite cultivars and lines.

The objective of this project is to differentiate tolerant and sensitive cultivars, germplasm lines, plant introductions, and wild soybeans in a waterlogged or flooded environment.

Project Deliverables

Incorporate new sources of flood tolerance identified into our current breeding program in attempt to combine high yield potential with high levels of flood tolerance. We will also use lines derived from flood tolerant sources in AR and MO as bridge material in the next cycle of breeding for flood tolerance and high yield. This is achieved through our cyclic breeding scheme: making different crosses, growing and identifying hybrids, advancing segregating populations via bulk pod method with mass selection for three generations (F2-F4), selecting desired individual plants, evaluating progeny rows and selecting pure lines, and testing selected lines in preliminary and advanced trials for flood tolerance and yield potential.

The preliminary screen of current commercial cultivars and collected germplasm was conducted in the past three years in AR and MO. Lines with extreme response to flooding have been identified and will be re-evaluated in this project at multi-locations in AR, MO, MS, LA, and TX.

We will also test new cultivars that are placed in the state variety testing program. The cross-breeding program is an on-going cyclic process where new populations are initiated each year while lines derived from crosses made 4-5 seasons earlier are in their final stages of evaluation. We have new crosses, plant populations, progeny rows, preliminary and advanced lines for testing and selection on going simultaneously at all breeding stages each year.

Progress of Work

Final Project Results

Benefit to Soybean Farmers

When dealing with potential losses to stresses, many growers have to decide whether or not to grow the highest-yielding cultivars or to grow cultivars that are the most stable when stresses are encountered. This project will identify cultivars with flood tolerance so that specific recommendations can be made to producers. This project will also identify new sources of flood tolerance from diverse germplasm and incorporate such tolerance into high yielding background.

Performance Metrics

Project Years