We. Vandeweg, A GENE-FOR-GENE MODEL TO EXPLAIN INTERACTIONS BETWEEN CULTIVARS OF STRAWBERRY AND RACES OF PHYTOPHTHORA-FRAGARIAE VAR FRAGARIAE, Theoretical and Applied Genetics, 94(3-4), 1997, pp. 445-451
A gene-for-gene model is postulated to explain the observed interactio
ns between cultivars of strawberry and races of Phytophthora fragariae
. Five interacting resistance (R1-R5) and avirulence (Avr1-Avr5) facto
rs explain all the available data involving 15 host genotypes, includi
ng the USA and Canadian differential series, and 12 pathogen isolates
from North America. Interactions between pathogen isolates and UK and
German differentials are also explained by the proposed model. The mod
el makes it possible to develop a universally applicable differential
series, to present a systematic, unequivocal nomenclature of races, an
d to increase the efficiency of breeding programs.