Hayday
November 21,2000
1. Hayday is a synthetic variety with 250 parental clones. Parent clones trace one population selected for resistance to phytophthora root rot, anthracnose, bacterial wilt, fusarium wilt, verticillium wilt, blue alfalfa aphid, spotted alfalfa aphid, pea aphid, stem nematode, and northern root knot nematode
Recurrent phenotypic selection was used. Final selections were made from 2 and 3 year nurseries near Nampa, Idaho based on overall root and crown health.
Parentage traces to an experimental closely related to the variety Archer (25%), Arrow (25%), Ultra (38%), and unknown (12%) Breeder (Syn 1) was produced on cuttings of the parental clones near Nampa, Idaho in 1993, under field Isolation.
Approximate germplasm source contributes are:
M. falcata (15%), Ladak (5%), M. varia (25%), Turkistan (4%), Flemish (48%), Chilean (36%), Peruvian (0%), Indian (0%), African (0%), Arabian (0%) and Unknown (0%).
2 Hayday appears to be adapted to and is intended for use in Winterhardy Intermountain region of the U.S.
It has been tested in Idaho, Washington, and Montana
3. Fall dormancy of Hayday is similar to Saranac. Flower color is approximately 72% purple and 28% variegated with a trace of cream, yellow and white.
4. Hayday has high resistance to bacterial wilt, verticillium wilt, fusarium wilt, and stem nematode; resistant to anthracnose (race 1), and pea aphid; low resistance to the spotted alfalfa aphid, and the blue alfalfa aphid.
5 Seed increase is limited to one generation of breeder seed (Syn 1), two generations of foundation and two to three generations of certified seed. 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 1993 ABI wil1 maintain sufficient stocks for the projected life of the variety.
6. Certified seed will be available in 2001
7. Plant variety protection will not be applied for.
8. This information can be forwarded to the PVP office.
9. Variety Name: Hayday Date submitted November21,2000
Experimental designations: ZX 9344, ABI 9344