DS 630
1. DS 630 is a 40 clone synthetic variety. Parent clones trace back through several intermediate steps to Conquer, Magnum, Blazer, DeKalb 120 and Americana 7525. Parental clones were selected out of forage yield plots and tested for one or more of the following traits: Forage yield, persistance, seed yield and resistance to bacterial wilt, Fusarium wilt, Phytophthora root rot, anthracnose and Verticillium wilt. The percent of germplasm sources are: M. falcata (5), Ladak (20), M. varia (19), Turkistan (40), Flemish (6) and Chilean (10).
2. DS 630 is intended for use in the upper midwest region of the United States for hay, haylage, greenchop and dehydration. The states where it has been tested in are: Wisconsin, Nebraska and Michigan.
3. Flower color in the Syn. 2 generation is 65% purple and 35% variegated, with trace amounts of cream, white and yellow. Growth habit in mid-summer is erect and semi-erect in the fall. Its fall dormancy is similar to the variety Saranac.
4. DS 630 has high resistance to bacterial wilt, resistance to Fusarium wilt and Phytophthora root rot and moderate resistance to anthracnose and Verticillium wilt. Its reaction to pea aphid, spotted alfalfa aphid, blue alfalfa aphid, and stem nematode has not been tested.
5. Breeder seed has been produced from cuttings of the parental clones in an isolation block as Syn. 1. Enough Breeder seed (Syn. 1) was produced for the expected life of the variety. Seed lots will be kept separate. Foundation seed will be produced from Breeder seed and Certified seed from either Breeder or Foundation seed. One generation each of Breeder and Foundation and two generations of Certified seed classes are recognized. A maximum of three years each is permitted on stands producing Breeder and Foundation seed with five years for Certified seed.
6. Certified seed will be available the spring of 1991.
7. Application for the Plant Variety Protection is undecided.
8. As a means of additional varietal protection, information included with this application may be provided to the PVP office.