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Longitudinal section of roots of strawberry plants showing typical red-core symptoms.Courtesy: SCRI, Dundee (GB).
Healthy root system of young strawberry runner, showing normal lateral root development.Courtesy: SCRI, Dundee (GB).
Strawberry runner root system infected by P. fragariae var. fragariae, showing typical rat's tail appearance.Courtesy: SCRI, Dundee (GB).