Development and Study of SCAR Markers in Pea (<Emphasis Type="Italic">Pisum sativum</Emphasis> L.)

In order to develop more specific markers that characterize particular regions of the pea genome, the data on nucleotide sequences of RAPD fragments were used for choosing more extended primers, which may be helpful in amplifying a fragment corresponding to the particular DNA region. Of the 14 STS markers obtained from 14 polymorphic RAPD fragments, 12 were polymorphic, i.e., they are SCAR markers that can be used in genetic analysis. The transition from complex RAPD spectra to amplification of a particular SCAR marker substantially facilitates analysis of large samples for the presence or absence of the examined fragment. Inheritance of the developed SCAR markers was studied in F₁ and F₂. SCAR markers were used to identify various pea lines, cultivars, and mutants. It was established that the study of amplification of STS markers in various pea genotypes at varying temperatures of annealing and the comparison with amplification of the original RAPD fragments in the same genotypes provide an approach for analysis of RAPD polymorphism origin.