2013
Screening Germplasm and Breeding for Resistance to Phomopsis Seed Decay in Soybean: Phase II Research (Year 2 of 2261)
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Contributor/Checkoff:
United Soybean Board
Category:
Sustainable Production
Keywords:
(none assigned)
Parent Project:
Screening Germplasm and Breeding for Resistance to Phomopsis Seed Decay in Soybean (Year 1 of 9261)
Lead Principal Investigator:
Shuxian Li, USDA-ARS
Co-Principal Investigators:
Pengyin Chen, University of Arkansas
John Rupe, University of Arkansas
David Walker, USDA/ARS-UIUC
+2 More
Project Code:
1320-532-5661
Contributing Organization (Checkoff):
United Soybean Board
(n/a)
Institution Funded:
USDA-ARS
(n/a)
Brief Project Summary:

Unique Keywords:
#breeding & genetics, #phomopsis spp., #soybean breeding - disease resistance, #soybean germplasm screening, #soybean seedling diseases
Information And Results
Final Project Results

Progress for each KPI is specified according to the numbered KPIs in section 3.4:
1. 10 Lines were identified with good resistance to Phomopsis seed decay
2. 150 breeding lines were developed from four mapping populations. The mapping populations will afford identification of resistant QTLs although this has not been accomplished as yet.
3. A cut-stem greenhouse assay was developed for breeders to more effectively screen lines for Phomopsis resistance as well as a petri-plate analysis and seed quality analyses for more thorough screening.
Additional accomplishments, beyond the specified KPIs, include:
4. 100 Phomopsis longicolla isolates collected from MS and AR; the pathogen’s genome was sequenced to more accurately characterize the difference in isolates and their virulence
5. 3-year field studies showed that select fungicides control Phomopsis and its effect on yield when applied at stage R5.

The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.