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Variation in pathogenicity and virulence of Septoria nodorum in Florida



Variation in pathogenicity and virulence of Septoria nodorum in Florida



Phytopathology 71(2): 199



When 282 single-spore Florida isolates of S. nodorum were each used to inoculate eight wheat cultivars, cultivar reactions, measured as percentage necrosis in seedling leaves, were classified into 253 resistance patterns. Of the isolates tested, 95 were pathogenic to all eight cultivars; 85, to seven; 53, to six; 32, to five; 11, to four; four, to three; and one, to two cultivars.

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