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3452ML
1. 3452ML is a synthetic variety with 28 parent clones. Parent clones trace to 16 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). Populations were also selected for multifoliolate leaf expression. Phenotypic recurrent selection was used. Final selections were made from two-year-old space-plant selection nurseries near Ames, IA, based on vigor, leafhopper yellowing resistance, leaf disease resistance, multifoliolate leaf expression, winter survival and fall dormancy reaction. Parentage traces to Multiking I (17%), Apollo Supreme (16%), Genesis (11%), Arrow, AP 8842 and AP 8923 (7% each), AP 8824, AP 8830, AP 8922, AP 8925 and Legend (4% each) and 46 additional ABI experirnentals (15%). Approximate germplasm source contributions are: M. falcata (7%), Ladak (7%), M. varia (20%), Turkistan (13%), Flemish (38%), Chilean (6%), Peruvian (2%) and 7% unknown. Breeder seed (Syn 1) was produced on cuttings of the parental clones near Nampa, ID, in 1991. An equal number of cuttings (approximately 60) of each parental clone was transplanted at random into an isolated block and harvested in bulk. 2. 3452ML 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 3452ML is similar to Ranger. Flower color of Syn 2 generation is approximately 70% purple and 30% variegated, with a trace of cream, white and yellow. It has moderate multifoliolate leaf expression. 4. 3452ML has high resistance to bacterial wilt, Fusarium wilt, anthracnose (Race 1) and Phytophthora root rot; resistance to Verticillium wilt, pea aphid and Aphanomyces root rot (Race 1); and moderate resistance to stem nematode. It has not been tested for reactions 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 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.
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