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ABI 9026
1. ABI 9026 is a synthetic variety with 85 parent clones. Parent clones trace to 29 populations selected for resistance to the following pests: bacterial wilt, Fusarium wilt, Verticillium wilt, Phytophthora root rot, anthracnose (Race 1), and Aphanomyces root rot (Race 1). Phenotypic recurrent selection was used. Final selections were made from two-year-old space-plant selection nurseries near Marshfield and livingston, WI, based on vigor, leafhopper yellowing resistance, leaf disease resistance, winter survival and fall dormancy reaction. Parentage traces to Dawn (15%), Clipper, AP 8824 and AP 8822 (7% each), AP 8832 and Nordic (6% each), AP 863 5B, Aggressor, AP 8830, and Dominator (5% each), Trident II, Stine 9227, Cutter, AP 8740, AP 8831 and Venture (4% each) and Genesis and Garat 645 (2% each), with 4% tracing to numerous other sources. Approximate germplasm source contributions are: M. falcata (8%), Ladak (8%), M. varia (20%), Turkistan (14%), Flemish (30%), Chilean (8%), Peruvian (4%) and 8% unknown. Breeder seed (Syn 1) was produced on cuttings of the parental clones near Nampa, ID, in 1990. An equal number of cuttings (approximately 35) of each parental clone was transplanted at random into an isolated block and harvested in bulk. 2. ABI 9026 appears to be adapted to and is intended for use in the North Central United States. It has been tested in Iowa, Illinois and Wisconsin. 3. Fall dormancy of ABI 9026 is similar to Vernal. Flower color of Syn 2 generation is approximately 66% purple and 34% variegated, with a trace of cream, white and yellow. 4. ABI 9026 has high resistance to bacterial wilt, Verticillium wilt, Fusarium wilt, anthracnose (Race 1) and Phytophthora root rot; resistance to Aphanomyces root rot (Race 1) and pea aphid; and moderate resistance to stem nematode. It has not been tested for reaction to spotted alfalfa aphid, blue alfalfa aphid or root knot nematode. 5. Seed increase is limited to one generation each of breeder (Syn 1), foundation (Syn 2) and certified (Syn 2 or 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 wil be available in 1994. 7. Plant Variety Protection will not be applied for. 8. This information can be forwarded to the PVP office.
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