1. ZX 9397 is a synthetic variety with 250 parent clones. Parent clones trace to two populations selected for resistance to Verticillium wilt, anthracnose (Race 1), spotted alfalfa aphid, blue alfalfa aphid, pea aphid. Phenotypic recurrent selection was used. Final selections were made from a space-plant nursery near Kingsburg, California. Parentage traces to UC 226(90%) and CUF 101(10%). Breeder seed (Syn 1) was produced on pare- clones near Nampa, Idaho in 1993 under field isolation. Approximate germplasm source contributes are: M. Falcata(2%), Ladak (1%), M. varia (1%), Turkistan (10%), Flemish (1%), Chilean (10%), Peruvian (1%), Indian (14%), African (60%).
2. Zx 9397 is intended for use in central and southern California, and the lower elevations of Arizona and New Mexico. Zx 9397 has been tested in California and Arizona.
3. Fall dormancy is similar to CUF 101. Flower color in Syn 2 generation is 99% purple with less than 1% each of variegated cream, white and yellow.
4. Zx 9397 has high resistance to Fusarium Wilt, Spotted Alfalfa Aphid, and Blue Alfalfa Aphid; resistance to, Phytophthora Root Rot, and Southern Root Knot; moderate resistance to Anthracnose (Race 1), Verticillium Wilt and Pea Aphid; low resistance to Bacterial Wilt, and Stem 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 an 5 year stand life is permitted on fields producing breeder, foundation and certified classes, respectively. Foundation seed production, outside the area of adaptation is limited to single-season production (non-overwintering). Second year of production may be allowed with inspection and approval by breeder prior to second year production. Breeder seed was produced in 1993. ABI will maintain sufficient stocks for the projected 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 19. 1997
Experimental designations: ZX 9397, ABI 9397