1. WL 323 is a synthetic variety
composed of 165 plants selected for resistance to Aphanomyces root rot.
Source material traces to two elite experimental lines selected for winterhardiness
and resistance to spotted alfalfa aphid, Phytophthora root rot, and Verticillium
wilt. Subsequent selection was performed for resistance to Aphanomyces
root rot in a field nursery.
Parental germplasm traces to DK 125, G-2852, break-thru, Vertus, Vernal,
and Ranger. Approximate germplasm source contributions are: M. falcata
-8%; Ladak -12%; M. varia -22%; Turkistan -5%; Flemish -47%; and
Chilean -6%.
2. WL 323 is adapted to and intended for use in the northwest, north central, and northwestern U.S. for hay, haylage, and dehydration purposes. WL 323 has been yield tested in Wisconsin, Illinois, Washington, and Pennsylvania.
3. Flower color of WL 323 approximates 65% purple and 35% variegated with traces of cream and yellow. Its fall dormancy is similar to that of Saranac.
4. WL 323 has high resistance to anthracnose (Race 1), bacterial wilt, Fusarium wilt, Phytophthora root rot, and stem nematode; resistance to Verticillium wilt, Aphanomyces root rot (Race 1), and pea aphid; and moderate resistance to spotted alfalfa aphid. Reaction to blue alfalfa aphid has not been adequately tested.
5. Breeder seed (Syn 1) was produced
on 165 plants under cage-isolation at Warden, WA. Sufficient Foundation
(Syn 2) seed was produced near Nampa, ID for the expected life of the variety.
One generation of Breeder (Syn 1) and two generations each of Foundation
(Syn 2 or 3) and Certified (Syn
3 or 4) seed are recognized. The maximum permitted length of stand for
Foundation and Certified seed fields are 3 and 5 years, respectively. Foundation
seed must be produced above 40 degrees North latitude. Production of Syn
3
Foundation seed requires consent
of the breeder.
6. Certified seed will be marketed in 1992.
7. It is undecided whether application will be made for Plant Variety Protection.
8. The information in the application
is available to the PVP office.