1. AB1 9193 is a synthetic variety with 200 parental clones. Parent clones trace populations selected for resistance to phvtophthora root rot, anthracnose, bacterial wilt, fusarium wilt, verticillium wilt, blue alfalfa aphid, spotted alfalfa aphid, pea aphid, stem nematode northern root knot nematode.  Recurrent phenotypic selection was used. Final selections were made from two and three year old nurseries near Nampa, Idaho based on overall root and crown health.  Parentage traces to experimentals closely related to GT 13R +(60%), Cuf 101 (20%), Hasawi (5%), Ardiente (5%), Yolo (5%) and unknown sources (5%). Breeder seed (Syn l ) was produced on cuttings of the parental clones near Nampa