CW 55057
1. CW 55057 is a synthetic variety with 164 parent plants. Parent plants were selected forpersistence and vigor following two years of close continuous grazing with both cattle and sheepat Woodland, California. Parentage of CW 55057 traces to the following germplasm sources:CW 481, Archer, LM 455, Felix, and miscellaneous Cal/West Seeds breeding populations.Approximate germplasm source contributions are as follows: M. falcata (2%), Ladak (3%), M.varia (100/o), Turkistan (10%), Flemish(380/o), Chilean (8%), Peruvian (3%), Indian (2%),African (15%), and unknown (11%).
2. CW 55057 is adapted to the southwest and moderately winter hardy intermountain areas ofthe U.S. and is intended for use in the southwest and moderately winter hardy intermountainareas of the U.S., Argentina, South Africa, and Australia. CW 55057 has been tested inCalifornia.
3. CW 55057 is a moderately dormant variety with fall dormancy similar to FD class 5 checkvarieties. Flower color observed in the syn2 generation is approximately 99% purple, 1%variegated, with a tram of white, cream, and yellow. CW 55057 has tolerance to intensivegrazing with high stocking rates similar to the tolerant check variety Alfagraze.
4. CW 55057 has high resistance to anthracnose (race 1), Fusarium. wilt, pea aphid, and bluealfalfa aphid, with resistance to Phytophthora root rot, spotted alfalfa aphid, and stem nematode.Reaction to bacterial wilt Verticillium wilt, Aphanomyces root rot (race 1), and root knotnematode has not been adequately tested.
5. Seed increase of CW 55057 is on a limited generation basis with one generation of breederand two generations of the foundation and certified seed classes. Breeder (syn1), foundation(syn2 or 3), and certified (syn.3 or 4) classes will be recognized. Production of (syn1),foundation seed requires consent of the breeder. Breeder seed was produced under cage isolationnear Woodland, California, in 1995. Sufficient foundation seed for the projected life of thevariety will be maintained by Cal/West Seeds. Stands of foundation and certified seed fields arelimited to three and six years, respectively.
6. Certified seed of CW 55057 will be available in 2000.
7. No decision has been, made regarding Plant Variety Protection.
8. This information can be forwarded to the PVP office.
9. Date submitted: November 30,1999
Experimental designation: CW 55057