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ARS Home » Midwest Area » East Lansing, Michigan » Sugarbeet and Bean Research » Research » Publications at this Location » Publication #92329
Title: EVALUATION OF RESISTANCE OF SUGARBEETS TO SEEDLING DISEASE CAUSED BY APHANOMYCES COCHLIOIDES: A DISEASE SCORING SYSTEM AND DISCRIMINATION BETWEEN RESISTANT AND SUSCEPTIBLE VARIEITIES IN A ROLLED TOWEL SYSTEM

Author
item Halloin, John
item JOHNSON, DAVID - MICHIGAN STATE UNIVERSITY

Submitted to: Annual Beet Sugar Development Foundation Research Report
Publication Type: Experiment Station
Publication Acceptance Date: 5/21/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: The fungus Aphanomyces cochlioides causes serious crop losses in sugarbeets due to seedling disease. Reliable methods are needed to evaluate resistances of varieties to the disease. A method was developed in which seedlings are inoculated with spores of the fungus and then incubated in a growth chamber. Seedlings of a susceptible variety treated in this manner showed more disease after 4 or 5 days than did those of a resistant variety. This method will provide a useful assay for evaluating host resistance to this seedling disease, thereby helping breeders to develop varieties with better disease resistance.