Reaction of soybean cultivars to natural infection by Asian rust

Authors

  • Maria Fernanda Antunes da Cruz Universidade Federal de Viçosa
  • Giselle Anselmo de Souza Universidade Federal de Viçosa
  • Fabrício Ávila Rodrigues Universidade Federal de Viçosa
  • Carlos Sigueyuki Sediyama Universidade Federal de Viçosa
  • Everaldo Gonçalves de Barros Universidade Federal de Viçosa

DOI:

https://doi.org/10.1590/S1678-3921.pab2011.v46.9615

Keywords:

Glycine max, Phakopsora pachyrhizi, reciprocal crosses, diallel, plant breeding, resistance

Abstract

The objective of this work was to evaluate the progress of Asian soybean rust (Phakopsora pachyrhizi) on Brazilian soybean genotypes destined for silage production, under natural conditions of infection. Rust severity over time and combining ability of five cultivars and 20 F3 soybean progenies were evaluated. The largest area under rust progress curve (AURPC) was 2,116 for progenies from the cross between cultivars UFVS 2003 x UFV16, and the smallest was 1,307 for UFV16 x Tucunaré. The effects of the general and specific combining abilities for AURPC were significant between the parents and progenies, as well as for the reciprocal crosses. These results indicate that resistance to Asian soybean rust can be influenced by maternal components. 

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Published

2011-05-20

How to Cite

da Cruz, M. F. A., de Souza, G. A., Rodrigues, F. Ávila, Sigueyuki Sediyama, C., & de Barros, E. G. (2011). Reaction of soybean cultivars to natural infection by Asian rust. Pesquisa Agropecuaria Brasileira, 46(2), 215–218. https://doi.org/10.1590/S1678-3921.pab2011.v46.9615

Issue

v.46, n.2, fev. 2011

Section

SCIENTIFIC NOTES