Genetic Characterization and Molecular Mapping Pse‐2 Gene for Resistance to Halo Blight in Common Bean

• DOI: 10.2135/cropsci2011.01.0046
• Publication Date: 2011-10-06T13:29:15Z
• Authors: Phillip N. Miklas; Deidré Fourie; Jennifer Trapp; Richard C. Larsen; Carolina Chavarro; Matthew W. Blair; Paul Gepts
• Keywords: Pseudomonas syringae

ABSTRACT Pseudomonas syringae pv. phaseolicola (Burkholder) Young et al. ( Psp ) causes halo blight, which is a serious bacterial disease of common bean Phaseolus vulgaris L.). Several resistance (R) genes have been discovered in host differential cultivar ZAA 12. Our objectives were to further characterize and enable marker‐assisted selection (MAS) the Pse‐2 gene 12 purported broad effect against multiple races. A recombinant inbred population, × ‘Canadian Wonder’, was challenged by blight pathogen set consisting nine The conferred races 2, 3, 4, 5, 7, 8, 9 expanded known for this from three seven Segregation F 2 populations confirmed dominant inheritance all except Race 8. Resistance 8 recessively inherited most closely fit 7 resistant susceptible segregation ratio generation. Perhaps other are segregating that modify sequence characterized amplified region (SCAR) marker tightly linked with generated. used integrate chromosome 10. survey lines cultivars revealed SCAR will utility MAS .