Development of STS markers and QTL validation for common bacterial blight resistance in common bean Academic Article uri icon

abstract

  • AbstractCommon bacterial blight (CBB) of common bean (Phaseolus vulgaris L.), is one of the major diseases that decrease yield and quality. A major quantitative trait locus (QTL) for CBB resistance from line XAN 159 was transferred into two bean lines, HR45 and HR67. Previous studies identified that two markers are linked to this QTL but the chromosome location was not consistent. To identify more tightly linked markers and to verify the chromosome location, 65 additional markers were mapped using 81 recombinant inbred lines (RILs) derived from a cross HR67OAC954. The QTL was mapped to a 13cM region on chromosome 1 and defined by eight molecular markers that explained 2552% of the phenotypic variation. Six tightly linked amplified fragment length polymorphism markers (0.69.7cM from the QTL peak) were converted into seven sequence tagged site markers, three of which were mapped to this QTL. Five tightly linked markers were used to screen 907 F2 plants derived from a cross HR45OAC Rex and four of them were linked to each other within 4.2cM. These markers may be useful in markerassisted selection and mapbased cloning of this major QTL.

published proceedings

  • PLANT BREEDING

author list (cited authors)

  • Liu, S., Yu, K., & Park, S. J.

citation count

  • 30

complete list of authors

  • Liu, S||Yu, K||Park, SJ

publication date

  • February 2008

publisher