1. C/W 2775 is a synthetic variety with 200 parent plants derived from four moderately dormant breeding lines (C/W 152, C/W 206, C/W 305, and C/W 330) that were developed independently by phenotypic recurrent selection for pest resistance and forage yield. Parentage of these lines trace to: 167, 581, WL 318, Peruana, and miscellaneous breeding lines. Estimates of the major germplasm sources that constitute this variety are: Turkistan (72%), Chilean (10%), Peruvian (3%), African (3%), and unknown (12%).
2. C/W 2775 is adapted to the Sacramento Valley and San Joaquin Valley of California and is intended for use in the Sacramento and San Joaquin Valleys of California and similar production areas of Nevada, Arizona, and New Mexico. C/W 2775 has been tested in California.
3. C/W 2775 is a nondormant variety with fall dormancy similar to Mesilla. Flower color observed in the Syn.1 generation is approximately 95% purple, 5% variegated, and a trace of cream and white.
4. C/W 2775 has high resistance
to Fusarium wilt and pea aphid with resistance to bacterial wilt, Phytophthora
root rot, and spotted alfalfa aphid. It has moderate resistance to anthracnose
(race 1), Verticillium wilt, and blue alfalfa aphid. Reaction to stem nematode,
root knot nematode, and Aphanomyces root rot has not been adequately
tested.
5. Seed increase 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. Breeder seed (Syn.1) was produced with field isolation near Woodland, CA in 1987. Cal/West Seeds will maintain sufficient foundation seed for the projected life of the variety. Production of Syn.3 foundation seed requires the consent of the breeder. Stands of foundation and certified seed fields are limited to 3 and 6 years, respectively.
6. Certified seed of C/W 2775 will be available in 1993.
7. No decision has been made concerning Plant Variety Protection.
8. This information can be forwarded
to the PVP office.