ДНК-маркеры устойчивости к ложной мучнистой росе (Plasmopara halstedii) у дикорастущих форм подсолнечника

A search for new donor genes for resistance Downy mildew (Plasmopara halstedii) among annual and perennial wild species of Helianthus L was conducted. It is shown that the identification of the resistance locus Pl 6 in annual species is informative marker На Р2 (1200 bp), while in perennial species – На Р3 (1800 bp). At the same time it should be noted that for perennial species in most cases amplification of DNA with a primer На Р2 coincide with the results of PCR analysis with primer На Р2. Discovered on the results of molecular genetic analysis a wild forms, containing the locus Pl 6, are of direct interest for the breeding of cultivated sunflower.