CW 09052

CW 09052

1. CW 09052 is a synthetic variety with 82 parent plants which were selected for lygus tolerance and seed yield from space planted nurseries in California. Parent plants were selected from various populations which were developed by selecting for aphid resistance, drought tolerance, frost tolerance, persistence and agronomic characteristics from space planted nurseries and yield trials in Argentina. Parentage of CW 09052 traces to miscellaneous Cal/West Seeds breeding populations (100%). Approximate germplasm source contributions are as follows: M. varia (4%), Turkistan (9%), Flemish (4%), Chilean (10%). Peruvian (4%), Indian (23%), and African (46%).

2. CW 09052 is adapted to and intended for use in the Southwest area of the U.S., Mexico, and Argentina.
CW 09052 has been tested in California, Mexico, and Argentina.

3. CW 09052 is a very nondormant variety with fall dormancy similar to FD class 9 check varieties. Flower color observed in the Syn. 2 generation is greater than 99% purple with a trace of variegated, white, cream, and yellow.

4. CW 09052 has high resistance to anthracnose (race 1), Fusarium wilt, Phytophthora root rot, spotted alfalfa aphid, stem nematode, and southern root knot nematode (Meloidogyne incognita) with resistance to Verticillium wilt, pea aphid, blue alfalfa aphid, and northern root knot nematode (Meloidogyne hapla) and moderate resistance to bacterial wilt. Reaction to Aphanomyces root rot (race 1) has not been adequately tested.

5. Seed increase of CW 09052 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 Syn. 4) classes will be recognized. Production of Syn. 3 foundation seed requires consent of the breeder. Breeder seed was produced under open isolation near Merced, California in 2000. 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 09052 will be available in 2003.

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: November 30, 2003.

Experimental Designation: CW 09052.