CW 55058
1 CW 55058 is a synthetic variety with 180 parent plants. Parent plantswere selected forpersistence and vigor following two years of close continuousgrazing with both cattle and sheepat Woodland, California. Parentage of CW55058 traces to the following germplasm sources:OK 49, Atene, Shenandoah,Cimarron, and miscellaneous Cal/West Seeds breeding populations.Approximategermplasm. source contributions are as follows: M.falcata (3%), Ladak (30/6),M.varia (15%), Turkistan (20/o), Flemish (27%), and Chilean (50%).
2. CW 55058 is adapted to the southwest and moderately winter hardy intermountainareas ofthe U. S . and is intended for use in the southwest and moderatelywinter hardy intermountainareas of the U.S., Argentina, South Africa, andAustralia. CW 55058 has been tested inCalifornia.
3. CW 55058 is a moderately dormant variety with fall dormancy similarto FD class 5 checkvarieties. Flower color observed in the syn2 generationis approximately 99% purple, 1%variegated, with a trace of white, cream,and yellow. CW 55058 has tolerance to intensivegazing with high stockingrates similar to the tolerant check variety Alfagraze.
4. CW 55058 has high resistance to Fusarium wilt and blue alfalfa aphid,with resistance toanthracnose (race 1), pea aphid, spotted alfalfa aphid,and stem nematode, and moderateresistance to Phytophthora root rot, Reactionto bacterial wilt, Verticillium wilt, Aphanomycesroot rot (race 1), and rootknot nematode has not been adequately tested.
5. Seed increase of CW 55058 is on a limited generation basis with onegeneration of breederand two generations of the foundation and certifiedseed classes. Breeder (syn1), foundation(syn2 or 3), and certified (syn3or 4) classes will be recognized. Production of syn3 foundationseed requiresconsent of the breeder. Breeder seed was produced under cage isolation nearWoodland, California, in 1995. Sufficient foundation seed for the projectedlife of the varietywill be maintained by Cal/West Seeds. Stands of foundationand certified seed fields are limitedto three and six years, respectively.
6. Certified seed of CW 55058 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 55058.