1. Dominator is a synthetic variety with 146 parent clones, Parent plants trace to 42 populations selected for resistance to the foilowing pests: bacterial wilt, Fusarium wilt, Vertidillium wilt, Phytophthora root rot, anthracnose and Aphanomyces. Phenotypic recurrent selection was used. Final selections were made from an Aphanomyces/Phytophthora root rot evaluation nursery near Marshfleld, Wisconsin based on winter injuzy, vigor and root development. Parentage traces to Aggressor (53%) and Cutter (47%). Approximate germplasm source contnbutions are: M. falcata (6%), Ladak (7%), ~Lxrniin (18%), Turkistan (15%), Flemish (290h), Chilean (15%) and Peruvian (7%) with 3% unknown..
2. Dominator appears to be adapted to and is intended for use in the North Central U.S. It has been tested in Wisconsin and Iowa.
3. Fall dormancy of Dominator is similar to Saranac. Flower color of Syn 2 generation is approximately 83% purple and 17% variegated with a trace of cream, white and yellow.
4. Dominator has high resistance to bacterial wilt, Fusarium wilt, Phytophthora root rot and anthracnose (race 1); resistance to Verticiflium wilt, Aphanomyces (race 1) and pea aphid; and moderate resistance to stem nematode. Reaction to spotted alfalfa aphid, blue alfalfa aphid and root knot nematode has not been determined.
5. Seed increase is limited to one generation each of breeder, foundation and certified seed classes. Certified seed may be produced from either breeder or foundation classes. A 1, 3 and 6-year stand life is permitted on fields producing breeder, foundation and certified classes respectively. Foundation seed production is limited to the Pacific Northwest Breeder seed was produced in 1988. ABI will maintain sufficient seed stocks for the projected life of the variety.
6. Certified seed will be available in 1993.
7. Plant Variety Protection will not be applied for.
8. This information can be
forwarded to the PVP office.