1. 54Q53 is a synthetic variety made up from 225 random parent plants crossed in "cage isolation" in 1994. Parent plants trace to populations selected for winterhardiness and forage yield as well as for one or more of the following pests: bacterial wilt, Verticillium wilt, Phytophthora root rot, stem nematode, northern root knot nematode, and spotted aphid. Phenotypic recurrent selection was used. Final selections were made from a space plant selection nursery near Connell, WA after a second winter based on winter survival, agronomic scores, and forage quality scores. Approximate germplasm source contributions are: M. falcata (3%), Ladak (5%), M. varia (14%), Turkistan (3%), Flemish (23%), Chilean (4%), African (1%), Indian (<1%), Peruvian (<1%) and unknown (46%).
2. 54Q53 is intended for use in the great plains, east central, winterhardy intermountain, and moderately winterhardy intermountain regions of the United states. The states in which 54Q53 have been tested are: Iowa, Minnesota, Wisconsin, Oregon, and Washington.
3. 54Q53 is a moderately winterhardy, moderately dormant cultivar with hardiness similar to Ranger and fall dormancy similar to Legend. It is a high forage quality variety. Flower color in the Syn. 2 generation is approximately 93% purple and 7% variegated with traces of yellow, white and cream.
4. 54Q53 is highly resistant to bacterial wilt, Verticillium wilt, Phytophthora root rot, stem nematode, and northern root knot nematode; resistant to anthracnose (race 1) and Fusarium wilt; and moderately resistant to Aphanomyces root rot, pea aphid, and spotted alfalfa aphid. Resistance to blue aphid has not been determined.
5. Breeders seed (Syn 1) was produced on 225 plants in cage isolation and bulked. Seed classes will be breeder, foundation (Syn 2 or 3), and certified (Syn 2, Syn 3, or Syn 4). Foundation seed may be produced from breeder or foundation. The second generation foundation seed may be produced at the discretion of Pioneer Hi-Bred International, Inc. Limitations of age of stand will be one, three and five years respectively, for breeder, foundation, and certified seed. Breeder seed must be grown in the Pacific Northwest region of the United States.
6. Seed will be marketed in the spring of 1998.
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 the Application for Review of Alfalfa Varieties for Certification may be provided to the PVP office.
9. Variety name: 54Q53
Experimental designations: X54Q53
Date NA&MLVRB first accepted this variety: January, 1998
Dates previous amendments were accepted: None
Date this amendment submitted: November 23, 1998