Abstract
With 1 figure and 1 table AbstractThe pepper (Capsicum annuum) disease resistance gene Bs3 mediates recognition of avrBs3‐expressing strains of the bacterial spot pathogen Xanthomonas campestris pv. vesicatoria. We established the co‐dominant DNA marker PR‐Bs3 that detects a functional nucleotide polymorphism in the Bs3 promoter. Analysis of 20 F2 segregants demonstrated complete linkage between PR‐Bs3 and Bs3 resistance. Furthermore the analysis of 17 Capsicum accessions from diverse geographical origins demonstrated that PR‐Bs3 was diagnostic for Bs3 resistance in all cases. Given that marker PR‐Bs3 allows the identification of Bs3 resistant lines in a co‐dominant fashion it will be a valuable tool for marker assisted selection of Bs3 resistant lines in bacterial spot resistance breeding programs.
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