Genetic mapping of quantitative resistance to race 5 of Pseudomonas syringae pv. phaseolicola in common bean

M. W F Yaish, Daynet Sosa, Francisco Javier Vences, Francisca Vaquero*

*Corresponding author for this work

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Halo-blight is an important worldwide bacterial disease of common bean (Phaseolus vulgaris L.) caused by Pseudomonas syringae pv. phaseolicola. Nine races of the pathogen and five race-specific resistance genes have been previously described. However, a quantitative response to this pathogen has also been described. The objective of this study was to identify halo-blight resistance loci linked to molecular markers that could be used in resistance breeding. Chromosomal regions related to race 5 halo-blight resistance were localized on a genetic map of RAPD and AFLP molecular markers and constructed by the analysis of a "Jules" × "Canela" F2 progeny. "Jules" shows quantitative resistance to halo-blight and "Canela" is a very appreciated but susceptible Spanish bean landrace. Two QTL for resistance to halo-blight were mapped in two linkage groups. There were four large groups, with 14-22 molecular markers each, five with 4-8 markers each, and three with 2 or 3 markers each.

Original languageEnglish
Pages (from-to)397-404
Number of pages8
JournalEuphytica
Volume152
Issue number3
DOIs
Publication statusPublished - Nov 2006

Keywords

  • Common bean
  • Disease resistance
  • Genetic mapping
  • Halo-blight
  • Phaseolus vulgaris
  • Pseudomonas syringae pv. phaseolicola

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Horticulture
  • Plant Science

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