Southern wilt of geranium
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| Author: | Patrice G. Champoiseau of University of Florida |
| Reviewers: | Caitilyn Allen of University of Wisconsin; Jeffrey B. Jones, Carrie Harmon and Timur M. Momol of University of Florida |
| Publication date: | September 12, 2008 |
| Project title: | Ralstonia solanacearum race 3 biovar 2: Detection, exclusion, and analysis of a select agent pathogen |
| Supported by: | The United States Department of Agriculture - National Research Initiative Program (2007-2010) |
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Photo 1. Initial symptoms of Southern wilt of geranium caused by R. solanacearum showing wilting and upward curling of leaves (Photo courtesy of D. Norman, Mid-Florida Research and Education Center, IFAS, University of Florida) |
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Photo 2. Symptoms of Southern wilt of geranium caused by R. solanacearum race 3 biovar 2 showing drying and brown necrosis on leaves (Photo courtesy of the Wisconsin Department of Agriculture, Trade and Consumer Protection) |
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Photo 3. Late symptoms of Southern wilt of geranium caused by R. solanacearum race 3 biovar 2 showing blackening and collapse of stem (Photo courtesy of D. Norman, Mid-Florida Research and Education Center, IFAS, University of Florida) |
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Photo 4. Late symptoms of Southern wilt of geranium caused by R. solanacearum showing root blackening (Photo courtesy of Margery Daughtrey, Cornell University) |
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Photo 5. Bacterial ooze from freshly-cut section of a geranium stem infected by R. solanacearum (Photo courtesy of M. Daughtrey, Cornell University) |
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Photo 6. Bacterial ooze in clear water from stem cross section of plant infected by R. solanacearum (Photo courtesy of University of Georgia, Plant Pathology Extension) |
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Photo 7. Virulent (bottom) and non-virulent (top) colonies of R. solanacearum on CPG agar growth medium (Photo courtesy of P. Champoiseau, University of Florida) |
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Photo 8. Virulent colonies of R. solanacearum on TZC agar medium (Photo courtsey of P. Champoiseau, University of Florida) |
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Photo 9. Bittersweet or woody nightshade (Solanum dulcamara). Key features for identification (Photo courtesy of J. Elphinstone, Central Science Laboratory, York, UK, Crown Copyright) |
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©2008 R. solanacearum race 3 biovar 2 USDA-NRI project. All rights reserved.