Description:
HA-DM9 (Pl8/Pl17) is a F3-derived F4 maintainer selection from the cross of HA 458 and RHA 340. HA 458 (PI 655009) is an oilseed maintainer line harboring the downy mildew (DM) resistance gene Pl17 mapped to linkage group (LG) 4 of the sunflower genome. RHA 340 (PI 518778) is an oilseed restorer line harboring the DM gene Pl8 mapped on LG13.