1. Garst 636 is a41 I-clone synthetic variety. Parent clones were selected foilowing three or four cycles of screening for resistance to Vertidillium wilt from populations which had previously been screened for winter survival, plus resistance to Phytophthora root rot, anthracnose (Race 1), bacterial wilt and Fusarium wilt. Parentage traces predominately (in order of contribution) to Endure, Apoilo II, Apoilo, Anchor, Trident, Saranac AR, Atlas and Olympic. Approximate germplasm source contributions are: M. falcata (100/o), Ladak (8%), hLxaria (200h), Turkistan (14%), Flemish (43%), Chilean (3%) and Peruvian (2%).
2. Garst 636 is intended for use in the northern region of the U.S. as hay, haylage, greenchop or dehy production. It has been tested in Iowa, Illinois, Idaho, Wisconsin and Pennsylvania.
3. Fall dormancy is similar to Vernal. Flower color of foundation generation is approximately 71% purple and 290/0 variegated.
4. Garst 636 has high resistance to bacterial wilt, resistance to Phytophthora root rot, Verticillium wilt, Fusarium wilt, stem nernatode and pea aphid; and moderate resistance to anthracnose (Race 1) and potato leafhopper yellowing. Reaction to spotted alfalfa aphid has not been adequately tested.
5. Breeder (Syn 1) seed was produced on cuttings at Naxnpa, Idaho, bulked over two years, and is held in cold storage. Seed increase is limited to one generation each of breeder, foundation and certified classes. Certified seed may be produced from either breeder or foundation seed. A 3 and 6-year stand life is permitted on fields producing foundation and certified seed, respectively. Foundation seed production is limited to the northern region of adaptation.
6. Certified seed will be available in 1986.
7. Plant Variety Protection will not be applied for.
8. This information can be
forwarded to the PVP office.