An evaluation was made of the use of random amplified polymorphic DNA (RAPD) as a genetic marker system in wheat. Reproducible amplification products were obtained from varietal, homozygous single chromosome recombinant line and wheat/alien addition line genomic DNA with selected primers and rigorously optimized reaction conditions. Factors influencing the RAPD patterns are DNA concentration, Mg2+ concentration, polymerase concentration and denaturing temperature. In wheat, the non-homoeologous, non-dose responsive and dominant behaviour of RAPD products devalues their use as genetic markers for the construction of linkage maps, and the high probability that the amplified fragments derive from repetitive DNA limits their use as a source of conventional RFLP probes. However, RAPD markers will most certainly find many applications in the analysis of genotypes where single chromosomes or chromosome segments are to be manipulated.
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Communicated by G. Wenzel
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Devos, K.M., Gale, M.D. The use of random amplified polymorphic DNA markers in wheat. Theoret. Appl. Genetics 84, 567–572 (1992). https://doi.org/10.1007/BF00224153