1. ZN 9746 is a 26 clone synthetic tracing to 23 populations selected for resistance to bacterial wilt, Fusarium wilt, Verticillium wilt, Phytophthora root rot, anthracnose (race 1) and Aphanomyces (races 1 and 2), leafhopper yellowing and stunting and winter survival. Phenotypic recurrent selection was used. Final selections were made from 2 and 3 year-old space plant selection nurseries in Iowa and Wisconsin based on dormancy reaction and stem quality.
2. ZN 9746 is adapted to the North Central and East Central Regions of the U.S. It is intended for use in the North Central and East Central Regions of the U.S. to produce stored feed. It has been tested in Iowa, Minnesota and Illinois.
3. ZN 9746 is moderately dormant, similar to the FD 4 check. Flower color of syn 2 generation is approximately 73% purple and 27% variegated with a trace of white, cream and yellow.
4. ZN 9746 has high resistance to Verticillium wilt, Fusarium wilt, Phytophthora root rot, anthracnose (race 1), Aphanomyces root rot (race 1), bacterial wilt and pea aphid and moderate resistance to Aphanomyces root rot (race 2). It has not been tested for reaction to blue alfalfa aphid, spotted alfalfa aphid, stem nematode and root knot nematode.
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 seed classes respectively. Foundation seed production is limited to the Pacific Northwest. Breeder seed was produced in 1997. ABI will maintain sufficient seed stocks for the life of the variety.
6. Certified seed will be available in 2002.
7. Plant Variety Protection will not be applied for.
8. This information can be forwarded to the P.V.P. office.
9. Variety Name: ZN 9746 Date submitted November 2001
*Results should be reported as: Test variety is , similar to the FD check. Test variety is , similar to the WS check.