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Table 3 General reaction responses of Blumeria graminis isolates collected from different hosts on triticale, wheat and rye cultivars a

From: Phylogeography and virulence structure of the powdery mildew population on its 'new' host triticale

Source hosts (origin of isolates)b

Inoculated hosts

 

Triticale

Wheat

Rye

B.g. f.sp. ‘triticale’ (n = 35)

+++

++

B.g. f.sp. tritici (n = 35)

+

+++

B.g. f.sp. secalis (n = 2)

+

+++

  1. a + indicates infection, − indicates no infection; a higher amount of + corresponds to a higher aggressiveness. Aggressiveness is interpreted here both as a quantitative and qualitative component of pathogenicity. Quantitatively as a higher amount of colonies with well developed hyphae and abundant conidia. Qualitatively as more isolates which are able to infect a particular host or cultivar.
  2. b Number in parenthesis indicates the number of isolates from each source host that were used in this experiment.