CW4308
1. CW 4308 is a synthetic variety with 220 parent plants which were selected sequentially for multifoliolate leaf expression and for resistance to Phytophthora root rot and Aphanomyces root rot (race 1). Parent plants were selected from crosses between selections from three year old Wisconsin nurseries that were derived from various populations which 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, Verticillium wilt, Phytophthora root rot, Aphanomyces root rot (race 1), anthracnose (race 1), and Leptosphaerulina leafspot. Parentage of CW 4308 traces to the following germplasm sources: Ciba 2888, GH 767, AlfaStar, MultiQueen, and miscellaneous Cal/West Seeds breeding populations. Approximate germplasm source contributions are as follows: M. falcata (8%), Ladak (6%), M. varia (25%), Turkistan (5%), Flemish (46%), and Chilean (10%).

2. CW 4308 is adapted to the North Central and East Central areas of the U. S. ,and is intended for use in the North Central and East Central areas of the U. S. . CW 4308 has been tested in Wisconsin, Minnesota, Iowa, Michigan, and Pennsylvania.

3. CW 4308 is a dormant variety with fail dormancy similar to Ranger. Flower color observed in the Syn. 2 generation is greater than 99% purple with a trace of variegated, yellow, white, and cream.

4. CW 4308 has high resistance to anthracnose (race 1), bacterial wilt, Fusarium wilt, Verticillium wilt, Phytophthora root rot, Aphanomyces root rot (race 1), pea aphid, and spotted alfalfa aphid. Reaction to blue alfalfa aphid, stem nematode, and root knot nematode has not been adequately tested.

5. Seed increase of CW 4308 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 Syn3), 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 near Woodland, California in 1994. 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 4308 will be available in 1998.

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:12/1/97

Experimental Designation: CW4308