2016
Characterizing resistance & identifying practices for managing soybean diseases in Ohio
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Contributor/Checkoff:
Ohio Soybean Council
Category:
Sustainable Production
Keywords:
Crop protectionDiseaseField management
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Anne Dorrance, The Ohio State University
Co-Principal Investigators:
Chris Taylor, Danforth Plant Science Center
Feng Qu, Ohio Agricultural Research and Development Center
Leah McHale, The Ohio State University
+2 More
Project Code:
QSSB
Contributing Organization (Checkoff):
Ohio Soybean Council
(n/a)
Institution Funded:
The Ohio State University
(n/a)
Brief Project Summary:

The research goal is to identify the best disease management practices for Ohio’s challenging environments. The first objective is to identify resistance to the many pathogens that affect soybean and the markers and genes that define the region in the genome that contribute to the expression of this trait. The second is to identify which inputs, like seed treatments and foliar fungicides, have the greatest efficacy towards mitigating losses when disease does develop. The third objective is to keep track of the changing pathogen populations. Work evaluates germplasm for baseline levels of disease resistance to Phytophthora sojae, Sclerotinia sclerotiorum, Fusarium species, Cercospora sojina and Pythium species.

Key Benefactors:
farmers, agronomists, extension agents, soybean breeders, seed companies

Information And Results
Project Deliverables

First quarter (December 2015): Harvest and screen lines segregating for resistance to P. sojae; Pythium and Fusarium. Continue the VIGs experiments for potential R-gene sequence and candidate genes for resistance via functional analysis. Continue to use SNP markers for the Illumina 6KSNP chip for high throughput analysis of additional populations segregating for novel Rpsgenes. Collect soil from studies of management of SCN. Harvest plots and analyze summer data. Complete identification of pathogens from summer/fall surveys. Submit manuscript for Py. irregularepopulation analysis. Begin to evaluate segregating populations for resistance to key Pythium spp.. Train new graduate student on methodologies.
Second quarter (March 2016): Complete screening of all Ohio Breeders material; screening of populations with novel resistance developed/advanced during summer of 2014 as well as isolate DNA for marker analysis. In addition to Phytophthora sojae, screen populations for resistance to Py. irregulare, Py ultimumand compare responses across isolates. Provide breeders with any new data to facilitate decisions required for new soybean populations. Continue with experiments for functional analysis of candidate genes.
Third quarter (June 2016): Initiate summer field studies, begin to increase germplasm with novel resistance genes that require further analysis, evaluate yield effects for specific QTL, raise selected germplasm for studies. Monitor disease development throughout the state, collect isolates for further studies.
Fourth quarter (September 2016) – Collect and summarize summer field data, continue
screening and fine mapping of resistance genes;

Final Project Results

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.