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Table 3 Infection types (ITs) of Puccinia striiformis f. sp. tritici isolates recovered from aeciospores on barberry (Berberis shensiana) seedlings

From: Grasses are able to harbor the oversummering of urediospores and the overwintering of teliospores of Puccinia striiformis f. sp. tritici in China

Grass species Number of
Leaf segment Aecia Single aecium Infection typesa
1 and 2 3 and 4
Agropyron cristatum 26 60 227 4 4
Elymus cylindricus 9 339 1485 22 48
Total 35 399 1712 26 52
  1. aInfection types (ITs) were determined based on a 0-to-4 scale (Hungerford and Owens 1923). ITs 1 and 2 are considered as avirulent; and ITs 3 and 4 are considered as virulent