2018
Screening Soybean Varieties for Resistance to SCN Race 2
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Contributor/Checkoff:
North Carolina Soybean Producers Association
Category:
Sustainable Production
Keywords:
NematodePest
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Katherine Drake Stowe, US Soybean Research Collaborative
Co-Principal Investigators:
Project Code:
P18-041
Contributing Organization (Checkoff):
North Carolina Soybean Producers Association
$13,142
Institution Funded:
North Carolina State University
$13,142
Brief Project Summary:

Soybean cyst nematodes race 2 is predominant in North Carolina. However, few soybean cultivars with resistance are available. This project screens both soybean cultivars adapted to North Carolina and wild soybean genotypes resistant to SCN race 2. The identified resistant soybean cultivars can be used by North Carolina farmers. The resistant wild soybean genotypes can be used as exotic novel genetic resources to develop new and diverse SCN resistant soybean cultivars.

Key Benefactors:
farmers, agronomists, extension agents

Information And Results
Final Project Results

Soybean cyst nematode (SCN) is the most damaging pest to soybean plants. SCN race2 is predominant in North Carolina. Using SCN-resistant soybean cultivars is the most efficient and environmental-friendly strategy to manage SCN damages. However, few soybean cultivars are resistant to SCN race 2. This project will screen both soybean cultivars, as well as the soybean wild relative, Glycine soja, to identify genotypes resistant to SCN race 2. The identified resistant soybean cultivars can be used by soybean farmers. The resistant wild soybean genotypes can be used as novel genetic resources to develop new and diverse SCN-resistant soybean cultivars.

As expected, much higher percentage of wild soybean genotypes (53/244=21.7%) showed resistance or moderate resistance to SCN race 2 than that of soybean cultivars (8/67=11.9). This can be explained that wild soybeans harbor much higher levels of diversity while cultivated soybeans have lost more than half of their genetic variation during domestication. More interestingly, one wild soybean genotype was identified resistant to SCN race 2, repeated evaluation is needed in the near future. We have published two manuscripts during funding period and acknowledged funding
support from NCSPA. In addition, we gave five invited talks, as well as a total of seven students presentations (oral or poster) at national and international meetings. The screening results will be organized and reported in a peer-review journal in the near future

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.