Submitted to: American Society of Sugarbeet Technologists
Publication Type: Abstract Only
Publication Acceptance Date: December 1, 2006
Publication Date: March 3, 2007
Citation: Hanson, L.E., Hill, A.L., Panella, L.W. 2007. Interaction of varying Fusarium oxysporum isolates with different sugarbeet lines. American Society of Sugarbeet Technologists. Technical Abstract: Fusarium oxysporum can cause a wilt or yellows, as well as a root rot of sugar beet. Isolates that cause yellows symptoms on sugar beet are classified as F. oxysporum f. sp. betae (FOB). While host resistance to FOB is available, growers have reported variable results when using resistant material in the field. Current research in our laboratory and previous research by others on variability in FOB demonstrated that isolates that are pathogenic on sugar beet can be highly variable. This variability could be associated with different host interactions. To examine this, twenty sugar beet lines were tested for their response to different FOB isolates in a greenhouse screen. While some sugar beet lines showed fairly broad spectrum resistance or susceptibility, others varied in their response to the FOB isolates. Tests for the presence of the pathogen in the host root indicate potential differences in the rate of spread through the root between resistant and susceptible beets.