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ABI 9043 1. ABI 9043 is a synthetic variety
with 71 parent clones. Parent clones trace to 19 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 2-year-old space-plant
selection nurseries at Marshfield and Livingston, Wisconsin, based on vigor
leafhopper yellowing resistance, leaf disease resistance, winter injury
and fall dormancy reaction. Parentage traces to Exp AP 8734 (17%), Venture
(15%), Genesis (14%), Garst 645 (10%), Aggressor (8%), Nordic (7%), Cutter
(7%), Stine 9227 (6%), Exp AP 8832, Exp AP 8822 and
2. ABI 9043 appears to be adapted to and is intended for use in the North Central U.S. It has been tested in Wisconsin, Iowa and Idaho. 3. Fall dormancy of ABI 9043 is similar to Saranac. Flower color of Syn 2 is approximately 74% purple and 26% variegated, with a trace of cream, white and yellow. 4. ABI 9043 has high resistance to bacterial wilt, anthracnose (race 1), Phytophthora root rot and pea aphid; resistance to Verticillium wilt, Fusarium wilt and Aphanomyces (race 1); 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 (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 1990. 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.
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