DS771
1. DS771 is a synthetic variety. Parent clones were selected out of forage yield plots and/or greenhouse and field disease evaluations. These parent plants were progeny tested for one or more of the following traits: forage yield, stand persistence, forage quality, and resistance to; Fusarium wilt, Phytophthora root rot, anthracnose (race 1) and spotted alfalfa aphid. Germplasm. sources are: Flemish (25%), Chilean (18%), Peruvian (12%) and unknown (45%).
2. DS771 is adapted to and intended for use in the Southwestern region of the United States and Argentina. The state and Provence where it has been tested are California, and La Pampa, Buenos Aires and Santa Fe, Argentina.
3. DS771 is a non-dormant variety similar to the fall dormancy 7 check. Flower color in the syn2 generation is 85% purple, 15% variegated with trace amounts of cream, white and yellow.
4. DS771 has high resistance to Fusarium wilt, northern root-knot nematode and southern root- knot nematode; resistance to pea aphid, stem nematode, and anthracnose (race 1); moderate resistance to bacterial wilt. It has not been tested for spotted alfalfa aphid, blue alfalfa aphid, Phytophthora root rot, Verticillium. wilt and Aphanomyces root rot (race 1).
5. Breeder seed (syn1) was produced from bulking seed of parent plants which were grown in field isolation near Sloughhouse, California, in 1993-94. Seed from parental clones were equally bulked and seed lots from each year were kept separate. Foundation seed (syn2) was produced from Breeder seed and certified seed (syn2 or 3) from either breeder or foundation seed. One generation each of breeder, foundation and two generations of certified seed classes are recognized. A maximum of three harvest years each is permitted on stands producing breeder and foundation seed with five years for certified seed. Sufficient breeder seed for the projected life of the variety will be maintained by Dairyland Research International.
6. Certified Seed will be available fall of 2000.
7. Application for the Plant Variety Protection is undecided.
8. Information in this application can be forwarded to the PVP office.
9. Date Submitted: November 29,1999
Experimental designations: DS771