5312

1. 5312 is a synthetic variety with 195 parent plants originating from an experimental line tracing to the varieties 5373, 5262, 5364 and a Pioneer experimental 84CF052. Parent plants resulted through phenotypic recurrent selection for resistance to one or more of the following: Aphanomyces root rot (Race 1), Phytophthora root rot, bacterial wilt, Verticillium wilt and anthracnose (Race 1). Geruplasm sources are N. falcata (6%), Ladak (9%),N. varia (27%), Turkistan (5%), Flemish (43%), Chilean (9%), and unknown (1%).

2. 5312 is adapted to and intended for use in the north central, east central and winterhardy intermountain regions of the United States. The states in which 5312 have been tested are: Iowa, Illinois, Minnesota, New York, Pennsylvania, Wisconsin, Oregon and Washington. It has also been tested in Ontario, Canada.

3. 5312 is a dormant cultivar with a fall dormancy similar to Ranger. Flower color in the Syn 2 generation is approximately 95% purple and 5% variegated, with traces of yellow, white and cream.

4. 5312 has high resistance to bacterial wilt, fusarium wilt, Phytophthora root rot, anthracnose (Race 1), Verticillium wilt, spotted alfalfa aphid and pea aphid; resistance to Aphanomyces root rot (Race 1); low resistance to stem nematode. 5312 has not been adequately tested for blue alfalfa aphid or root knot nematode.

5. Breeder seed (Syn 1) was produced in 1989 on parent plants in cage isolation. Seed classes will be breeder, foundation (Syn 2 or Syn 3) and certified (Syn 2, Syn 3, or Syn 4). Foundation seed may be produced from breeder or foundation. The second generation foundation (Syn 3) may be produced at the discretion of Pioneer Hi--Bred International, Inc. Limitation on ages of stand will be three years and five years, respectively, for foundation seed and certified seed. Sufficient breeder and foundation seed for the projected life of the variety will be maintained by Pioneer Hi--Bred International, Inc.

6. Seed vill be marketed in the spring of 1994.

7. Application for Plant Variety Protection will be made and the certification option will not be requested.

8. As a means of added varietal protection, information included with Application for Review of Alfalfa Variety for Certification may be provided to the PVP Office.