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CW02012 |
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1. CW 02012 is a synthetic variety with 200 parent plants that were selected sequentially for
multifoliolate leaf expression and for resistance to Phytophthora root rot, Aphanomyces root rot, and
anthracnose. Parent plants were selected from three-year old Minnesota and Wisconsin yield trials. Yield
trial source varieties were derived from various populations that were developed by phenotypic recurrent
selection for high relative feed value (using Near Infrared Reflectance Spectroscopy), and for resistance
to one or more of the following pests: bacterial wilt, Fusarium Wilt, Verticillium wilt, Phytophthora root
rot, Aphanomyces root rot, anthracnose (race 1), and Leptosphaerulina leafspot. Parentage of CW 02012
traces to the following germplasm sources: UltraLac, Chimo, and miscellaneous Cal/West Seeds breeding
populations (29%). Breeder seed (Syn.1) was produced under cage isolation near Woodland, California
in 2000.
2. CW 02012 is adapted to the North Central and East Central areas of the U.S. and is intended for use in
the North Central, East Central, and Winterhardy Intermountain areas of the U.S.. CW 02012 has been
tested in Wisconsin and Iowa.
3. CW 02012 is a dormant variety with fall dormancy similar to FD class 2 check varieties. Flower color
observed in the Syn.2 generation is approximately 94% purple, 2% variegated, 2% cream, and 2% yellow,
with a trace of white.
4. CW 02012 has high resistance to anthracnose (race 1), bacterial wilt, Fusarium wilt, Verticillium wilt,
Phytophthora root rot, and spotted alfalfa aphid, resistance to Aphanomyces root rot (race 1), and
moderate resistance to pea aphid. Reaction to the blue alfalfa aphid, stem nematode, and root knot
nematode has not been tested.
5. Seed increase of CW 02012 is on a limited generation basis with two generations each of breeder,
foundation, and certified seed classes. Breeder (Syn.1 or Syn.2), foundation (Syn.2 or Syn.3), and
certified (Syn.3 or Syn.4) classes will be recognized. Production of Syn.2 breeder or Syn.3 foundation
seed requires consent of the breeder. Breeder seed was produced under cage isolation near Woodland,
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 02012 will be available in 2006.
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, 2005. Experimental Designation: CW 02012 |