1. Dominator is a synthetic variety
with 146 parent clones. Parent plants trace to 42 populations selected
for resistance to the following pests: bacterial wilt, Fusarium wilt, Verticillium
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 Marshfield, Wisconsin, based on winter injury, vigor and root
development. Parentage traces to Aggressor (53%) and Cutter (47%).
Approximate
germplasm source contributions
are: M. falcata (6%), Ladak (7%), M. varia (18%), Turkistan
(15%), Flemish (29%), 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 Iowa and Wisconsin.
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 Fusarium wilt, Phytophthora root rot and anthracnose (race 1); resistance to Verticillium wilt, Aphanomyces (race 1) and pea aphid; and moderate resistance to stem nematode. Reaction to spotted alfalfa aphid, blue alfalfa aphid, bacterial wilt and root knot nematode has not been determined.
5. Seed increase is limited to
one generation each of breeder (Syn 1), foundation (Syn 2) and certified
(Syn 3) 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.