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Title: FUSARIUM IN SUGAR BEET AND BEAN

Author
item Hanson, Linda
item Hill, Amy
item WICKLIFFE, ERIN - COLORADO STATE UNIVERSITY
item SCHWARTZ, HOWARD - COLORADO STATE UNIVERSITY
item Panella, Leonard

Submitted to: Journal of Sugarbeet Research
Publication Type: Abstract Only
Publication Acceptance Date: 2/28/2001
Publication Date: 3/30/2001
Citation: Hanson, L.E., Hill, A.L., Wickliffe, E., Schwartz, H.F., Panella, L.W. 2001. Fusarium in sugar beet and bean. Journal of Sugarbeet Research.

Interpretive Summary:

Technical Abstract: Fusarium species can cause a number of problems in sugar beet and dry bean, including yellows and wilts. The most important of these diseases are caused by Fusarium oxysproum. We surveyed beets to determine which Fusarium species were associated with yellowing of the plants. Sixty-five percent of the Fusarium isolates obtained were F. oxysporum. Six other species were identified. Seventy-one F. oxysporum isolates from sugar bee were tested for pathogenicity on sugar beet and for the ability to colonize dry bean roots. Of the isolates tested, 14% were highly virulent, 11% were moderately virulent, and 75% were non-pathogenic on sugar beet. Five isolates caused stunting of dry bean. All isolates could be isolated from the roots of dry bean, indicating that dry bean can serve as a symptonless carrier for the beet pathogens. The pathogenic isolate could not be distinguished from the non-pathogens using RAPDs, and isolates were genetically diverse.