| dc.contributor.author | Belay, Kassaye Hussen | |
| dc.description.abstract | Sclerotinia sclerotiorum is one of the most destructive pathogens of sunflower in the United States and worldwide. Distinctive symptoms include mid-stalk rot, basal stalk rot and head rot from subsequent infection of the sunflower head. This fungal pathogen has a remarkably broad host range of over 400 dicot plants. However, little is currently known about the virulence strategies that allow S. sclerotiorum to successfully infect a wide range of plant hosts. The goal of our project was to identify S. sclerotiorum virulence determinants and effectors that contribute to disease development on sunflower. We evaluated a diverse collection of 232 S. sclerotiorum isolates for aggressiveness of mid-stalk lesion formation on two sunflower inbred lines. In addition, we performed genotyping-by-sequencing on 191 isolates to identify genetic markers for genome-wide association mapping to identify candidate genes associated with aggressiveness. A total of eight loci associated with variation in aggressiveness were identified. | en_US |
| dc.publisher | North Dakota State University | en_US |
| dc.rights | NDSU policy 190.6.2 | en_US |
| dc.title | Association Mapping to Identify Sclerotinia sclerotiorum Genomic Regions Affecting Aggressiveness of Lesion Formation on Sunflower Stems | en_US |
| dc.type | Thesis | en_US |
| dc.date.accessioned | 2020-09-24T19:07:01Z | |
| dc.date.available | 2020-09-24T19:07:01Z | |
| dc.date.issued | 2019 | |
| dc.identifier.uri | https://hdl.handle.net/10365/31547 | |
| dc.rights.uri | https://www.ndsu.edu/fileadmin/policy/190.pdf | en_US |
| ndsu.degree | Master of Science (MS) | en_US |
| ndsu.college | Agriculture, Food Systems and Natural Resources | en_US |
| ndsu.department | Plant Sciences | en_US |
| ndsu.program | Plant Pathology | en_US |
| ndsu.advisor | Brueggeman, Robert | |
