Distribution and prevalence of races of Puccinia graminis tritici in Brazil in 1971

Authors

  • Elisa Thomaz Coelho
  • Amarilis Lares Barcellos

DOI:

https://doi.org/10.1590/S1678-3921.pab1974.v9.17258

Keywords:

Stem rust, wheat, resistance, Triticum aestivum

Abstract

To continue the survey of races samples of Puccinia graminis Pers. f. sp. tritici Ericks & E. Henn were collected in the Brazilian wheat region in 1971. Races 11, 11/65, 15/65, 15/71, 17, 17/61 and 17/63 were identified on 159 stem rust samples. Race 15/65 was prevalent, reaching more than 40% of the samples. Races 17/63 and 17, second and third in order of prevalence, comprised about 20 and 19% of the samples, respectively. The combination of the genes Sr 7 and Sr 11 continues to confer resistance to all occurrent races.

 

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How to Cite

Coelho, E. T., & Barcellos, A. L. (2014). Distribution and prevalence of races of Puccinia graminis tritici in Brazil in 1971. Pesquisa Agropecuaria Brasileira, 9(9), 85–87. https://doi.org/10.1590/S1678-3921.pab1974.v9.17258

Issue

v.9, n.9, 1974: Série Agronomia

Section

ERRATA