WL 711 WF


  1. WL 711 WF is a 115-plant synthetic variety resulting from phenotypic recurrent selection for resistance to silverleaf whitefly (Bemsia argentifolii) in a field nursery near Westmorland, CA. Source material traces to two very non-dormant lines selected for resistance to spotted alfalfa aphid. Parental germplasm traces to Hasawi, WL 605 and Pioneer 5929. Approximate germplasm source contributions are Chilean – 5%; Peruvian – 5%; Indian – 10%; African – 30%; and Arabian – 50%.
  2. WL 711 WF is adapted to and intended for use in the Southwestern United States. WL 711 WF has been yield tested in California.
  3. Flower color of WL 711 WF at Syn 2 approximates 100% purple with a trace of cream and variegated. The fall dormancy of WL 711 WF is similar to the Class 10 varieties.
  4. WL 711 WF has high resistance to Fusarium wilt, pea aphid, blue alfalfa aphid, northern root-knot nematode and southern root-knot nematode; and resistance to Phytophthora root rot, stem nematode and spotted alfalfa aphid. Reaction to anthracnose (Race 1), bacterial wilt, Verticillium wilt and Aphanomyces root rot (Race 1) has not been adequately tested.
  5. Breeder seed was produced in 1991 on 115 plants under cage isolation at Bakersfield, California. Sufficient foundation seed for the expected life of the variety will be maintained by W-L Research. One generation of Breeder (Syn 1) and two generations each of Foundation (Syn 2 or 3) and Certified (Syn 3 or 4) seed are recognized. The maximum permitted length of stand for Foundation and Certified seed fields are three and five years, respectively. Production of Syn 3 Foundation seed requires consent of the breeder.
  6. Certified seed will be marketed in 1998.
  7. It is undecided whether application will be made for Plant Variety Protection.
  8. The information in this application is available to the PVP office.
  9. Variety Name: WL 711 WF Date Submitted: November 1997
          Experimental Designation: C290

          Date NAVRB first accepted this variety: January, 1998

          Date this amendment submitted: November, 1998
 
 

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