Abstract
Recombinant backcross lines of barley were produced from a cross between Kanto Nakate Gold (KNG; two-rowed) and Azumamugi (AZ; six-rowed) after backcrosses of F1 plants with AZ as the recurrent parent. Each of these lines had an introgressed segment from chromosome 2 of KNG. Two recombinant backcross lines, L1 and M3-13, were used for an initial screening of polymorphism. After screening a total of 888 oligonucleotides as arbitrary primers, we identified eight random amplified polymorphic DNAs (RAPDs) between backcross lines and AZ. Among the RAPD fragments, CMNA-38700 was linked to the v locus with a recombination frequency of zero, while OPJ-09850 and OPP-02700 were linked to the v locus at a map distance of 1.4 cM. Thus, the three RAPD markers were clustered around the v locus since the lengths of introgressed chromosomal segments in the L1 and M3-13 lines were no less than 38 cM. The other five RAPD fragments that we identified were not linked to the v locus.
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