The objectives of the present study were to evaluate the field effects of @entity17844 . phaseoli (Xap), which causes common bacterial blight ( @entity7727 ) on common bean ( @entity11297 .), and to identify genetic factors for resistance to @entity7727 using a linkage map constructed with random amplified polymorphic DNA (RAPD), restriction fragment length polymorphism (RFLP), simple sequence repeat (SSR), and amplified fragment length polymorphism (AFLP) markers. One hundred and forty-two F2:4 lines, derived from a cross between 'OAC Seaforth' and 'OAC 95-4', and the parents were evaluated for their field reaction to @entity7727 . In the inoculated plots, the reaction to @entity7727 was negatively correlated with seed yield, days to maturity, plant height, hypocotyl diameter, pods per plant, and harvest index. A reduction in seed yield and its components was observed when disease-free and @entity7727 -inoculated plots were compared. The broad-sense heritability estimate of the reaction to @entity7727 was 0.74. The disease segregation ratio was not significantly different from the expected segregation ratio for a single locus in an F2 generation. The major gene for @entity7727 resistance was localized on linkage group (LG) G5. A simple interval mapping procedure identified three genomic regions associated with the reaction to @entity7727 . One quantitative trait loci (QTL), each on LG G2 (BNG71Dra1), G3 (BNG21EcoRV), and G5 (PHVPVPK-1) explained 36.3%, 10.2%, and 42.2% of the phenotypic variation for the reaction to @entity7727 , respectively. Together, these loci explained 68.4% of the phenotypic variation. The relative positions of these QTL on the core common bean map and their comparison with the previous QTL for @entity7727 resistance are discussed.

Mapping genetic factors affecting the reaction to XXXX . phaseoli in @entity11297 . under field conditions.

@entity11297 :: ('3885', 'Species') :: ['Phaseolus vulgaris L'] @entity17844 :: ('53413', 'Species') :: ['Xanthomonas axonopodis pv'] @entity7727 :: ('MESH:D001622', 'Chemical') :: ['CBB']
@entity17844 :: (53413,Species) :: ['Xanthomonas axonopodis pv']
