Description:
HA-DM6 is a BC2F3-derived BC2F4 confection maintainer selection from the cross of CONFSCLB1*2/CMS CONFSCLB1/Helianthus argophyllus accession PI 494576. CONFSCLB1 is a confection BC2F3-derived BC2F4 maintainer selection from the cross of HA 441/ROM PH//HA 442/HA 441/4/CONF/5/CONF. The wild annual Helianthus argophyllus accession (PI 494576) was originally collected in Texas in 1984, and is resistant to new virulent races of downy mildew.