RACE DIVERSITY AND COMPLEXITY IN POPULATIONS OF THE SORGHUM ANTHRACNOSE FUNGUS Colletotrichum graminicola

Authors

  • CARLOS ROBERTO CASELA
  • FREDOLINO GIACOMINI SANTOS
  • ALEXANDRE DA SILVA FERREIRA

DOI:

https://doi.org/10.18512/1980-6477/rbms.v3n01p%25p

Keywords:

sorghum anthracnose, Colletotrichum graminicola, pathogen variability.

Abstract

The phenotypic diversity of the sorghum anthracnose fungus Colletotrichum graminicola, C. graminicola. was analyzed through virulence on 10 sorghum lines. Isolates of the pathogen were obtained from three locations of severe anthracnose epidemics: Sete Lagoas (MG), Pelotas (RS), and Cravinhos (SP). Populations were compared through the Shannon diversity index and through a pathogenicity association coefficient (PAC) and a virulence association coefficient (VAC). Despite high values obtained, a large portion of information on the phenotypic diversity in all populations was lost due to deviation from the ideal frequency of 0.5 for virulence to each sorghum genotype. Six two-line and 11 three-line combinations were identified with low virulence association in the pathogen population. Lines CMSXS215B, CMSXS116, and CMSXS227R, present in all combinations with high PAC and low VAC, were identified as potential sources for stable and durable resistance to.

Author Biography

FREDOLINO GIACOMINI SANTOS

 

 

 

Downloads

Published

2010-04-22

How to Cite

CASELA, C. R., SANTOS, F. G., & FERREIRA, A. D. S. (2010). RACE DIVERSITY AND COMPLEXITY IN POPULATIONS OF THE SORGHUM ANTHRACNOSE FUNGUS Colletotrichum graminicola. REVISTA BRASILEIRA DE MILHO E SORGO, 3(01). https://doi.org/10.18512/1980-6477/rbms.v3n01p%p

Issue

Vol. 3 No. 01 (2004)

Section

Scientific Paper

License

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under the Creative Commons Attribution License that allows the sharing of work and recognition of the work of authorship and initial publication in this journal.

Authors are able to take on additional contracts separately for non-exclusive distribution of the version of the paper published in this journal (eg, in an institutional repository or publish as a book), with acknowledgment of its initial publication in this journal.

Authors are permitted and encouraged to post their work online (eg, in institutional repositories or on their website) at any point before or during the editorial process, as this may leadto productive exchanges, as well as increase the impact and citation of published work.

Most read articles by the same author(s)