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CW24027 |
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1. CW 24027 is a synthetic variety with 230 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 five-year old Pennsylvania yield trials, three-year old
Illinois yield trials, three-year old Minnesota yield trials, and three-year old 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 24027
traces to the following germplasm sources: Alliant, GH 700, WinterGold, and miscellaneous Cal/West
Seeds breeding populations. Breeder seed (Syn.1) was produced under cage isolation near Woodland,
California in 2002.
2. CW 24027 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, Great Plains, Moderately Winterhardy Intermountain, and Winterhardy
Intermountain areas of the U.S.. CW 24027 has been tested in Wisconsin, Iowa, Minnesota, and South
Dakota.
3. CW 24027 is a moderately dormant variety with fall dormancy similar to FD class 4 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 24027 has high resistance to anthracnose (race 1), bacterial wilt, Fusarium wilt, Verticillium wilt,
Phytophthora root rot, and Aphanomyces root rot (race 1), with resistance to pea aphid. Reaction to the
spotted alfalfa aphid, blue alfalfa aphid, stem nematode, and root knot nematode has not been tested.
5. Seed increase of CW 24027 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 2002. 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 24027 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 24027 |