VS-627
(Experimental Desig.)
1. VS-627 is a synthetic variety with 300 parent plants. Parent plants to various populations selected for resistance to Aphanomyces root rot and one or more of the following pests: bacterial wilt, Verticillium wilt, anthracnose, Phytophthora root rot, Leptosphaerulina leafspot and spotted alfalfa aphid. Phenotypic recurrent selection was used. Parentage traces predominately (in order of contribution) to G-2841, 98, Apollo II, Crown, Centurion, Endure, G-2852, and Ultra. Approximate germplasm source contributions are: M. falcata - 8%, Ladak - 6%, M. varia - 29%, Turkistan - 3%, Flemish - 50%, Chilean - 4%.
2. VS-627 is intended for use in the north central and northeastern U.S. for hay, haylage, greenchop or dehy production. It has been tested in Wisconsin, New York and Pennsylvania.
3. VS-627 is a dormant variety. Fall dormancy is similar to Ranger. Flower color is 66% purple and 34% variegated, with a trace of white, yellow and cream.
4. VS-627 has high resistance to anthracnose and Phytophthora root rot with resistance to bacterial wilt, Fusarium wilt, Verticillium wilt, pea aphid and spotted alfalfa aphid and moderate resistance to Aphanomyces root rot. VS-627 has significant resistance to Leptosphaerulina leafspot but actual percentage resistant plants has not been determined. Reaction to stem nematode and blue alfalfa aphid has not been adequately tested.
5. Seed increase is on a limited generation basis with one generation each of breeder and certified seed classes, and two generations of foundation seed. Breeder (Syn. 1), foundation (Syn. 2 or Syn. 3), and certified (Syn. 3 or Syn. 4) classes will be recognized. Production of Syn. 3 foundation seed requires the consent of the breeder. Breeder seed was produced under cage isolation at Woodland, CA. Sufficient foundation seed for the projected life of the variety will be maintained by VISTA. Stands of foundation and certified seed fields are limited to 3 and 6 years, respectively.
6. Certified seed will be marketed in 1990.
7. No decision has been made concerning Plant Variety Protection.
8. This information can be forwarded to the PVP office.