CW49100
1. CW 49100 is a synthetic variety with 133 parent plants which were selected sequentially for resistance to Phytophthora root rot, Anthracnose (race 1), and seed yield. Parent plants were selected from crosses between selections from various populations developed by a combination of phenotypic recurrent selection and strain crossing with selection for one or more of the following pests: Fusarium wilt, Verticillium wilt, anthracnose (race 1), Phytophthora root rot, blue alfalfa aphid, and spotted alfalfa aphid. Parentage of CW 49100 traces to the following germplasm sources: Altiva, Mecca, DK 189, CW 2820, and UC 332. Approximate germplasm source contributions are as follows: M.varia (2%), Turkistan (6%), Flemish (2%), Chilean (4%), Peruvian (2%), Indian (24%), African (52%), and Unknown (8%).

2. CW 49100 is adapted to the Southwestern U. S. and is intended for use in the Southwestern U. S. , Mexico, and Argentina. CW 49100 has been tested in California.

3. CW 49100 is a very nondormant variety with falI dormancy similar to CUF lot. Flower color observed in the generation is approximately 99% purple and 1% variegated with a trace of white, cream, and yellow.

4. CW 49100 has high resistance to Fusarium wilt, spotted alfalfa aphid, blue alfalfa aphid, and pea aphid resistance to anthracnose (race 1) and Phytophthora root rot, and low resistance to Verticillium wilt. Reaction to bacterial wilt, Aphanomyces root rot (race 1), stem nematode, and root knot nematode has not been adequately tested.

5. Seed increase of CW 49100 is on a limited generation basis with one generation of breeder and two generations of the foundation, and certified seed classes. Breeder (Syn. 1), foundation (Syn. 2 or Syn. 3), and certified (Syn. 3 or Syn4) classes will be recognized. Production of Syn. 3 foundation seed requires the consent of the breeder. Breeder seed was produced under cage isolation near Merced, California in 1994. Sufficient foundation seed for the projected life of the variety will be maintained by Cal/West Seeds. Stands of foundation and certified seed fields are limited to 3 and 6 years, respectively.

6. Certified seed of CW 49100 will be available in 1998.

7. No decision has been made regarding Plant Variety Protection.

8. This information can be forwarded to the PVP office.

9. Variety Name: ________________ Date submitted: 12/1197. Experimental Designation:CW 4910