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Molecular analysis using gene specific markers to determine the presence of (A) Rpi-blb1 and (B) Rpi-blb3 genes in selected somatic hybrids, their parental lines S. bulbocastanum GLKS 33741 (blb41), cv. ‘Delikat’ and different segregating BC1 progenies after back-crossing with cvs. ‘Quarta’ and ‘Baltica’ (from above to below, arrows indicate the target fragments).
