Abstract
Abstract Thirty clones of the beach strawberry, Fragaria chiloensis (L.) Duch., that were known to be resistant to strawberry aphid, Chaetosiphon fragaefolii (Cockerell), were evaluated for resistance to twospotted spider mite, Tetranychus urticae Koch. AH clones had fewer mites per leaf than the cultivar ‘Totem’. Two clones, BSP-14 and LCM-19, had totals of only 6 and 82 mites, respectively, on 4 dates compared to 1741 mites on ‘Totem’. The ‘Del Norte’ clone of F. chiloensis, previously used as a source of aphid resistance in breeding, was more susceptible than BSP-14 and LCM-19 to the mite.
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