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CW 89092 |
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1. CW 89092 is a synthetic variety with 180 parent plant that were selected for ease of flower tripping. Parent plants were selected from various populations that were developed by a combination of phenotypic recurrent selection and strain crossing with selection for resistance to one or more of the following pests: Fusarium wilt Verticillium wilt, Phytophthora root rot, anthracnose (race 1), spotted alfalfa aphid, and blue alfalfa aphid. Parentage of CW 89092 traces to Robusta, CW 907, ACA 900, DK 191, Grasis, Grasis II, and miscellaneous Cal/West Seeds breeding populations. Approximate germplasm source contributions are as follows: M.varia (2%), Turkistan (10%), Flemish (1%), Chilean (8%), Peruvian (3%), Indian (24%), African (52%). 2. CW 89092 is adapted to and intended for use in the Southwest area of the U.S., Mexico, and Argentina. CW 89092 has been tested in California, Mexico, and Argentina. 3. CW 89092 is a very nondormant variety with fall dormancy similar to FD class 10 check varieties. Flower color observed in the Syn.2 generation is approximately 100% purple with a trace of variegated, white, cream, and yellow. 4. CW 89092 has high resistance to Fusarium wilt, Phytophthora root rot, and northern root knot nematode (Meloidogyne hapla), with resistance to bacterial wilt, Verticillium wilt, stem nematode, pea aphid, spotted alfalfa aphid, and blue alfalfa aphid, and moderate resistance to anthracnose (race 1). Reaction to Aphanomyces root rot (race 1) and has not been adequately tested. 5. Seed increase of CW 89092 is on a limited generation basis with one generation of breeder and two generations of the foundation and certified seed classes. Breeder (Syn.l), 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 cage isolation near Woodland, California in 1998. 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 89092 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, 2002. Expermental Designation: CW 89092. |