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ABI 9140
1. ABI 9140 is a synthetic variety with 112 parent clones. Parent clones trace to 12 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 Allegro (14%), Quantum and ABI 9022 (12% each), ABI 9012 and ABI 9020 (10% each), ABI 9021 (8%), ABI 9030, ABI 9031, Green Field and ABI 9042 (7% each), ABI 9033 (4%) and Evolution (2%). Approximate germplasm source contributions are: M. falcata (8%), Ladak (8%), M. varia (20%), Turkistan (15%), Flemish (32%), Chilean (8%), Peruvian (4%) and 5% unknown. Breeder seed (Syn 1) was produced on cuttings of the parental clones near Nampa, ID, in 1991. An equal number of cuttings (approximately 30) of each parental clone was transplanted at random into an isolated block and harvested in bulk. 2. ABI 9140 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 9140 is similar to Saranac. Flower color of Syn 2 generation is approximately 73% purple and 27% variegated, with a trace of cream, white and yellow. 4. ABI 9140 has high resistance to bacterial wilt, Verticillium wilt, Fusarium wilt, anthracnose (Race 1) and Phytophthora root rot, and resistance to Aphanomyces root rot (Race 1) and pea aphid. It has not been rested for reaction to stem nematode, 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 1991. 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. |