IDENTIFICATION OF GENES FOR RESISTANCE TO PHYTOPHTHORA FRAGARIAE IN STRAWBERRY.
Several cultivars were tested against each of eight North American and three Canadian races of Phytophthora fragariae, the cause of the red stele disease of strawberry. Results show that a differential set of cultivars with respect to red stele resistance could be created based on their resistance (R) genes. Any differential set should at least contain cultivars like Md-683 (R1), Climax, Redgauntlet, or Sparkle (R2), CPRO-92610 (R3), Del Norte (R4), and Yaquina B (R5), each having only one of the five R-genes, and a universally susceptible cultivar like Blakemore or Senga Sengana.
van de Weg, W.E., Giezen, S., Maas, J.L. and Galletta, G.J. (1993). IDENTIFICATION OF GENES FOR RESISTANCE TO PHYTOPHTHORA FRAGARIAE IN STRAWBERRY.. Acta Hortic. 348, 137-138