Evaluating Techniques for Screening Strawberry Seedlings for Resistance to Colletotrichum fragariae. Barbara J. Smith, Plant Pathologist, USDA, ARS, U.S. Small Fruit Research Station, Poplarville, MS 39470. J. M. Spiers, Research Horticulturist, USDA, ARS, U.S. Small Fruit Research Station, Poplarville, MS 39470. Plant Dis. 66:559-561. Accepted for publication 31 August 1981. This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1982. DOI: 10.1094/PD-66-559.

Large numbers of strawberry seedlings can be effectively screened in the greenhouse for resistance to Colletotrichum fragariae by spraying conidial suspensions of the fungus over the 2- to 3-mo-old plants. High humidity immediately after inoculation is necessary for infection and rapid symptom expression.

Keyword(s): Fragaria × ananassa, strawberry anthracnose, strawberry crown rot.