Description:
HA-BSR2 was selected from the cross HA 89/3/HA 458//NMSHA 89/PI 435843. HA 89 (PI 599773) is an inbred maintainer line. The nuclear male-sterile line NMSHA 89 (PI 559477) possesses a single recessive nuclear male sterility gene ms9. HA 458 (PI 655009) is a high oleic and downy mildew resistant germplasm. PI 435843 is an accession of wild annual Helianthus petiolaris subsp. fallax collected in New Mexico in 1978 and identified as resistant to Sclerotinia basal stalk rot.