RESISTANCE IN STRAWBERRY TO RACES OF PHYTOPHTHORA FRAGARIAE AND TO ISOLATES OF VERTICILLIUM FROM NORTH AMERICA
Strawberry (Fragaria x ananassa Duch.) cultivars developed for the eastern United States were tested for resistance to several races of Phytophthora fragariae Hickman (red stele) and to isolates of Verticillium (wilt). Several cultivars were found to have high levels of resistance to the western races A-7, A-8 and A-9, although these cultivars had not been bred for resistance to these races. The F. x ananassa clones MD-683 and 'Aberdeen' and the F. chiloensis clone 'Del Norte' had the highest levels of resistance to all Verticillium isolates. This increases the availability of germplasm sources that may be useful in future breeding programs for resistance to a broad range of P. fragariae races and pathotypes of Verticillium.
Maas, J.L., Galletta, G.J. and Draper, A.D. (1989). RESISTANCE IN STRAWBERRY TO RACES OF PHYTOPHTHORA FRAGARIAE AND TO ISOLATES OF VERTICILLIUM FROM NORTH AMERICA. Acta Hortic. 265, 521-526