Emperor


  1. Emperor is a 53 clone synthetic cultivar. Parent clones trace to 39 populations selected for resistance to the following pests: bacterial wilt, fusarium wilt, verticillium wilt, phytophthora root rot, anthracnose (race 1) and aphanomyces (race 1) plus tow additional isolates. Phenotypic recurrent selection was used. Final selections were made from two year old space plant selection nurseries near Livingston and Marshfield, Wisconsin and Napier, Iowa based on yield, winter survival, degree of leafhopper yellowing and stunting, freedom from leaf diseases, fall dormancy reaction and stem protein and digestibility.  Parentage traces to Innovator +Z (9%), 90MYCVW, ABI 9021, Green Field, A-395, 620, Synergy, Winterstar, ABI 9230, Demand and Wintergreen (6% each), Arrow, ABI 8929, Imperial, Defiant, 2444, TMF Generation, and GH 797 (3% each), with 4% from numerous other sources.  Estimated % germplasm sources contributing to the genetic constitution of this variety.
M. falcata
  
Ladak
  
M. varia
  
Turkistan
  
Flemish
  
Chilean
5
  
5
  
23
  
17
  
39
  
6
                     
Peruvian
  
Indian
  
African
  
Arabian
  
Unknown
    
4
  
-
  
-
  
-
  
1
    
2. Emperor appears to be adapted to and is intended for use in the North Central Region of the U.S.. It has ben tested in Iowa, Wisconsin, Illinois and Michigan.

3. Fall dormancy of Emperor is similar to Saranac. Flower color of Syn 2 generation is approximately 76% purple and 23% variegated with a trace of cream, white and yellow.

4. Emperor has high resistance to bacterial wilt, fusarium wilt, verticillium wilt, anthracnose (race 1), phytophthora root rot and aphanomyces (race 1), resistance to pea aphid and moderate resistance to spotted alfalfa aphid. It has not been tested for reaction to blue alfalfa aphid, stem nematode or root knot nematode.

5. Seed increase is limited to one generation each of breeder (syn 1), foundation (syn 2) and certified (syn 3) seed classes. Certified seed may be produced from either breeder or foundation classes. A 1,3 and 6-year stand life is permitted on fields producing breeder, foundation and certified classes, respectively. Foundation seed production is limited to the Pacific Northwest. Breeder seed was produced in 1995. ABI will maintain sufficient seed stocks for the projected life of the variety

6. Certified seed will be available in 1998.

7. Plant Variety Protection will not be applied for.

8. This information can be forwarded to the PVP office.

              9. Variety name: Emperor

            Experimental designations: ZN 9541

           Date NA&MLVRB first accepted this variety: January 1998

           Dates previous amendments were accepted:

          Date this amendment submitted: December 1998
 
 
 
 

Previous Page