Epidemiological characters and the use of cluster analysis for characterizing partial resistance to soybean rust

Authors

  • Juliana Araújo Santos
  • Fernando Cézar Juliatti
  • Verônica Araújo Santos
  • Analy Castilho Polizel
  • Fernanda Cristina Juliatti
  • Osvaldo Toshiuki Hamawaki

DOI:

https://doi.org/10.1590/S1678-3921.pab2007.v42.7588

Keywords:

Glycine max, Phakopsora pachyrhizi, multivariate analysis, dendrogram, rust severity

Abstract

The objective of this work was to evaluate the partial resistance of soybean genotypes against Phakopsora pachyrhizi. Resistance characteristics were: average number of pustules, rust severity and the area under the disease progress curve. Significant differences were found among the genotypes for the average number of pustules and rust severity. Multivariate analysis allowed the discrimination of partially resistant genotypes. Three genotypes (G4, G41, and G42), referring to parents Cristalina and IAC 100, presented greater partial resistance to soybean rust.

Downloads

Published

2007-03-01

How to Cite

Santos, J. A., Juliatti, F. C., Santos, V. A., Polizel, A. C., Juliatti, F. C., & Hamawaki, O. T. (2007). Epidemiological characters and the use of cluster analysis for characterizing partial resistance to soybean rust. Pesquisa Agropecuaria Brasileira, 42(3), 443–447. https://doi.org/10.1590/S1678-3921.pab2007.v42.7588

Issue

v.42, n.3, mar. 2007

Section

SCIENTIFIC NOTES