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CW 25006 |
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1. CW 25006 is a synthetic variety with 39 parent plants selected sequentially for high winter hardiness,
high forage yield, high relative feed value, and multifoliolate leaf expression; 9 parent plants were from
three-year old Wisconsin nursery selections from various populations; 30 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 and nursery 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 25006 traces to the
following germplasm sources: Tribute, Escalade, Royal Harvest, WinterGold, and miscellaneous
Cal/West Seeds breeding populations. Breeder seed (Syn.1) was produced under cage isolation near
Woodland, California in 2002.
2. CW 25006 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 25006 has been tested in Wisconsin, Iowa, and South Dakota.
3. CW 25006 is a moderately dormant variety with fall dormancy similar to FD class 5 check varieties.
Flower color observed in the Syn.2 generation is approximately 99% purple and 1%variegated, with a
trace of white, cream and yellow.
4. CW 25006 has high resistance to anthracnose (race 1), bacterial wilt, Fusarium wilt, Verticillium wilt,
and Phytophthora root rot with resistance to Aphanomyces root rot (race 1). Reaction to the blue alfalfa
aphid, pea aphid, spotted alfalfa aphid, stem nematode, and root knot nematode has not been tested.
5. Seed increase of CW 25006 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 25006 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 25006 |