1. DK133 is a synthetic variety
with 297 parent plants. Parent plants were selected for multifoliolate
expression and resistance to one or more of the following pests: bacterial
wilt, Verticillium wilt, anthracnose, Phytophthora root rot, Aphanomyces
root rot,Leptosphaerulina leaf spot and
spotted alfalfa aphid. DK133 traces to a cross between a population derived
from Jewel and 4 year old Wisconsin yield trial selections from the varieties
2833, Crown II, and Legend. Approximate germplasm source contributions
are:
M. falcata -5%, Ladak
-6%, M. varia -30%, Turkistan -3%, Flemish -50% and Chilean -6%.
2. DK133 is adapted to and intended for use in the northern and central U.S. for hay, haylage, greenchop or dehy production. It has been tested in Idaho, Wisconsin, Minnesota, Missouri, Pennsylvania and New York.
3. DK133 is a moderately dormant variety. Fall dormancy is similar to Saranac. Flower color is 90% purple, 10% variegated and a trace of white, yellow and cream. At first flower in autumn approximately 80% of the plants show multifoliolate expression.
4. DK133 has high resistance to anthracnose (race 1), bacterial wilt, Fusarium wilt, and Phytophthora root rot with resistance to spotted alfalfa aphid, pea aphid. Aphanomyces root rot (race 1) and Verticillium wilt. It has moderate resistance to stem nematode. Reaction to blue alfalfa aphid has not been tested.
5. Seed increase is on a limited generation basis with one generation of breeder and two generations of 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 the consent of the breeder. Breeder seed was produced under cage isolation at Woodland, California. Sufficient foundation seed for the projected life of the variety will be maintained by VISTA. Stands of foundation and certified seed fields are limited to 3 and 6 years, respectively.
6. Certified seed will be marketed in 1992.
7. No decision has been made concerning Plant Variety Protection.
8. This information can be forwarded
to the PVP office.