1. ZN 9530 is a 39 clone synthetic cultivar. Parent clones trace to 30 populations selected for resistance to the following pests: bacterial wilt, Fusarium wilt, Verticillium wilt, Phytophthora root rot, anthracnose (race 1) and Aphanomyces (race 1) plus two additional isolates. Phenotypic recurrent selection was used. Final selections were made from two-year old space plant selection nurseries near Livingston and Marshfield, Wisconsin and Napier, Iowa based on yield, winter survival, degree of leafhopper yellowing and stunting, freedom from leaf diseases, fall dormancy reaction and stem protein and digestibility. Parentage traces to Innovator+Z (11%), ABI 9125(10%), Synergy (9. /. ), ABI 9124 (8%), Defiant and Empire (7% each), 620(6%), TMF Generation, Complete, Winterstar, Wintergreen and ABI 923DD (5% each), A-395, Bounty, ABI 9221 and ABI 9134(3% each) with 5% from numerous other sources. Estimated % germplasm sources contributing to the genetic constitution of this variety. M. falcata Ladak M. varia Turkistan Flemish Chilean 5 6 21 17 33 7 Peruvian Indian African Arabian Unknown 6 0 0 0 5.
2. ZN 9530 appears to be adapted to and is intended for use in the North Central Region of the U. S. . It has been tested in Iowa, Wisconsin and Minnesota.
3. Fall dormancy of ZN 9530 is similar to Vernal. Flower color of Syn 2 generation is approximately 68% purple and 31% variegated with a trace of cream, white and yellow. Winter survival is similar to Vernal.
4. ZN 9530 has high resistance to bacterial wilt, Fusarium wilt Verticillium wilt, anthracnose (race 1), Phytophthora root rot and Aphanomyces (race 1) and resistance to pea aphid. It has not been tested for reaction to spotted alfalfa aphid, blue 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 2,3 and 6 year stand life is permitted on fields producing breeder, (Syn1) foundation (Syn2) and certified (Syn 3) seed classes respectively. Foundation seed production is limited to the Pacific Northwest. Breeder seed was produced in 1995. ABI will maintain sufficient seed stocks for the life of the variety.
6. Certified seed will be available in 1998
7. Plant Variety Protection will not be applied for.
8. This information can be forwarded to the PVP office.
9. Variety Name: Date Submitted November 1997
Experimental designations: ZN9530.