Vol. 50 No. 2 (2011)
Research Papers

Distribution of races of Pyrenophora tritici-repentis in Algeria and identication of a new virulence type

Published 2011-07-11

Keywords

  • Tan spot,
  • wheat,
  • virulence,
  • isolate

How to Cite

[1]
H. BENSLIMANE, L. LAMARI, A. BENBELKACEM, R. SAYOUD, and Z. BOUZNAD, “Distribution of races of Pyrenophora tritici-repentis in Algeria and identication of a new virulence type”, Phytopathol. Mediterr., vol. 50, no. 2, pp. 203–211, Jul. 2011.

Abstract

Tan spot, caused by Pyrenophora tritici-repentis, is a foliar disease  of wheat, responsible for high economic losses in several wheat  growing areas in the world. There are eight known races of P. tritici-repentis based on ability to induce necrosis and/or chlorosis on a set of differential cultivars. Fifty five isolates of P. tritici-repentis  originating from diverse wheat growing regions in Algeria were  studied to determine which races are present and to identify new  races. Races 1, 4, 5, 6, 7 and 8 were found and a new virulence pattern was identified. Isolates with this pattern induced necrosis in durum  wheat but failed to induce any disease in the common wheat  genotypes in the differential set.

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