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ABI 9044
1. ABI 9044 is a synthetic variety with 61 parent clones. Parent clones trace to 23 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 Venture (13%), Dawn (13%), Genesis (11%), Aggresssor (8%), Garst 645, Nordic and AP 8730 (7% each), Absolute, AP 8740 and AP 8822 (5%each), Trident II, Stine 9227, AP 8821 and AP 8840 (3% each), with 7% tracing to numerous other sources. Approximate germplasm source contributions are: M. falcata (8%), Ladak (8%), M. varia (20%), Turkistan (15%), Flemish (31%), Chilean (8%), Peruvian (4%) and 6% unknown. Breeder seed (Syn 1) was produced on cuttings of the parental clones near Nampa, ID, in 1990. An equal number of cuttings (approximately 50) of each parental clone was transplanted at random into an isolated block and harvested in bulk. 2. ABI 9044 appears to be adapted to and is intended for use in the North Central United States It has been tested in Iowa, Illinois and Idaho. 3. Fall dormancy of ABI 9044 is similar to Saranac. Flower color of Syn 2 generation is approximately 72% purple and 28% variegated, with a trace of cream, white and yellow. 4. ABI 9044 has high resistance to bacterial wilt, Fusarium wilt, anthracnose (Race 1), Verticillium wilt and Phytophthora root rot; resistance to Aphanomyces root rot (Race 1) and pea aphid; and low 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 will 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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