CW 190

1. CW 190 is an advanced generation synthetic variety of Ladino type white clover with 205 parent plants. Parent plants were selected following two cycles of phenotypic recurrent selection at Woodland, California for vegetative vigor following frequent cutting, flowering intensity, and freedom from leaf disease and virus in large spaced-plant nurseries. Selection was entirely within the Brown Loam Synthetic No.2 germplasm (PI 512040). Each cycle of selection, approximately 300 seedlings were established as spaced plants on a 3-foot x 3-foot grid spacing. Selection intensities of 5 and 7% were imposed in the first and second cycles of selection, respectively. Breeder seed (Syn.1) was produced under open isolation near Woodland, California in 1991. Seed was bulk harvested from all parent plants.

2. CW 190 is adpated to the Southwestern, Southeastern, and East Central regions of the U.S. and Japan and is intended for use in the Southeastern U.S., Europe, and Japan. CW 190 has been tested in California, Mississippi, Kansas, and Japan. The intended use of CW 190 is for hay, haylage, greenchop, or pasture, primarily in mixtures with forage grasses.

3. CW 190 is later in maturity and has a higher frequency of plants without leaf markings compared to Regal.

4. Seed increase of CW 190 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 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 field isolation near Woodland, California in 1991. 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 2 and 4 years, respectively.

5. Certified seed of CW 190 will be available in 1999.

6. No decision has been made regarding Plant Variety Protection.

7. This information can be forwarded to the PVP office.

8. Variety Name: Date Submitted: December 1, 1998

Experimental Designation: CW 190