Avaliação da resistência de genótipos de sorgo ao agente causal da antracnose

Translated title of the contribution: Evaluation of resistance in sorghum genotypes to the causal agent of anthracnose

Ester Alvarenga Santos Buiate, Elaine Aparecida de Souza, Lisa Vaillancourt, Ivan Resende, Urubatan Palhares Klink

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


The high degree of variability of the fungus Colletotrichum sublineolum, causal agent of sorghum anthracnose, has hindered the development of resistant hybrids. The objective of this research was to compare the aggressiveness of different fungal isolates and evaluate the genetic resistance (vertical and horizontal resistance) of various sorghum lines and hybrids. Twelve isolates, collected from different regions, were inoculated on 87 lines and 63 hybrids in the field and disease severity was evaluated. The diallel crossing method provided information about the vertical and horizontal resistance of the host, as well as the aggressiveness/ virulence of the pathogen. This genetical method was very promising for the identification of horizontal resistance in the sorghum- Colletotrichum sublineolum pathosystem, and for the prediction of anthracnose resistance in hybrids in the absence of vertical resistance. Dilatory resistance was detected in 14.94% of the inbred lines, and in 19.04% of the hybrids. Significant differences in aggressiveness and virulence of the isolates were also observed.

Translated title of the contributionEvaluation of resistance in sorghum genotypes to the causal agent of anthracnose
Original languagePortuguese
Pages (from-to)166-172
Number of pages7
JournalCrop Breeding and Applied Biotechnology
Issue number2
StatePublished - 2010


  • Breeding
  • Colletotrichum sublineolum
  • Horizontal resistance
  • Melhoramento
  • Resistência horizontal
  • Resistência vertical
  • Sorghum bicolor
  • Vertical resistance

ASJC Scopus subject areas

  • Biotechnology
  • Agronomy and Crop Science


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