1. DK131HG is a synthetic variety with 165 parent plants. Parents
were selected based on clonal and/or polycross progeny tests for forage
yield, forage quality, fall dormancy reaction and pest resistance from
several breeding populations previously selected for resistance to one
or more of the following pests: bacterial wilt, Fusarium wilt, Verticillium
wilt, anthracnose (Race 1), Phytophthora root rot, Aphanomyces root rot
(Race 1) and potato leafhopper. A combination of genotypic and phenotypic
recurrent selection was used in the development of this variety. The parental
populations from which all clones were derived trace to the following cultivars
and germplasm releases: Rushmore (30%), DK133 (18%), Sterling (15%), Pacesetter
(12%), DK121HG (10%), Legend (6%) and the germplasm releases- 81IND-2,
KS108GH5, and KS94GH6 (3% each). Registrations of the germplasm release
populations were published in Crop Science. Breeder seed (Syn1) was produced
near Nampa, ID in 1996, harvested in total from all parent plants and bulked.
Approximate germplasm source contributions are: M. falcata (3%),
Ladak (5%), M.varia (22%), Turkistan (4%), Flemish (55%), Chilean
(2%) and unknown (9%).
2. DK131HG is adapted to the North Central and East Central United States and intended for use in the North Central, East Central United States and Eastern Canada. It has been tested in Wisconsin, Minnesota and Illinois.
3. Fall dormancy of DK131HG is similar to the FD3 checks and winter survival of this variety is similar to WS2 checks. Flower color in the Syn2 is 48% purple, 35% variegated, 10% white and 7% yellow, with a trace of cream.
4. DK131HG has high resistance to bacterial wilt, Fusarium wilt, Verticillium wilt, anthracnose (Race 1), Phytophthora root rot and potato leafhopper; resistance to Aphanomyces root rot (Race 1), northern root knot nematode, pea aphid and spotted alfalfa aphid; moderate resistance to stem nematode; and low resistance to blue alfalfa aphid.
5. Seed increase is on a limited generation basis with one generation of breeder and two generations of foundation and certified seed classes. Syn1 breeder seed was produced near Nampa, ID in 1996. The breeder will maintain sufficient breeder (Syn1) and foundation (Syn2 or Syn3) for the projected life of the variety. Production of Syn3 foundation seed requires the consent of the breeder. Forage Genetics will maintain sufficient foundation seed for the projected life of the variety. Stands of foundation and certified seed fields are limited to 3 and 5 years, respectively.
6. Certified seed will be marketed in 1999.
7. No decision has been made concerning the Plant Variety Protection Act.
8. The information in this application can not be forwarded to the PVP office.
9. Variety Name: DK131HG Date Submitted 11/1/98
Experimental designations: FG 4R25