Garst 636
1. Garst 636 is a 411-clone synthetic variety. Parent clones were selected following 3 or 4 cycles of screening for resistance to Verticillium wilt, from populations which had previously been screened for winter survival plus resistance to Phytophthora root rot, anthracnose, bacterial wilt and Fusarium wilt. Parentage traces predominately (in order of contribution) to Endure, Apollo II, Apollo, Anchor, Trident, Saranac AR, Atlas, and Olympic.
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 29% variegated.
4. Garst 636 has high resistance to bacterial wilt, resistance to Phytophthora root rot, Verticillium wilt, and Fusarium wilt, and moderate resistance to anthracnose and potato leafhopper yellowing. Reaction to pea aphid, spotted alfalfa aphid and stem nematode has not been adequately tested.
5. Breeder (Syn 1) seed was produced on cuttings at Nampa, 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. No decision has been made on application for Plant Variety Protection.