1. C/W 2888 is a synthetic variety with 200 parent plants which were selected from populations that were developed by phenotypic recurrent selection and strain crossing. Parent plants were selected for resistance to one or more of the following pests: anthracnose, Phytophthora root rot, Verticillium wilt, and spotted alfalfa aphid. The following germplasm sources were used in the development of C/W 2888: VS--448, Maricopa, Condor, and Madera. Approximate germplasm source contributions are as follows: Ladak (1%), M.varia (5%), Turkistan (19%), Flemish (1%), Chilean (11%), Peruvian (6%), Indian (23%), African (29%), and Unknown (5%).
2. C/W 2888 is adapted to the
Sacramento and Imperial Valleys of California and the Mesilla Valley of
New Mexico and is intended for use in the Sacramento, San Joaquin,
and Imperial Valleys of California and similar production areas of Nevada,
Arizona, and New
Mexico. C/W 2888 has been tested
in California and New Mexico.
3. C/W 2888 is a nondormant variety with fall dormancy similar to Moapa 69. Flower color observed in the Syn.1 generation is approximately 99% purple, 1% variegated, and a trace of white, cream, and yellow.
4. C/W 2888 has high resistance to anthracnose (race 1) and spotted alfalfa aphid, with resistance to Phytophthora root rot and blue alfalfa aphid. It has moderate resistance to Verticillium wilt, Fusarium wilt, and pea aphid. Reaction to bacterial wilt, 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. Production of Syn.3 foundation seed requires the consent of the breeder. Breeder seed was produced under cage isolation at Woodland, CA in 1988. 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 C/W 2888 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.