Passport

 

 

  1. Passport is a 120-plant synthetic variety resulting from phenotypic recurrent selection for resistance to Aphanomyces root rot (Race 2). Parental germplasm traces to WL 226, Thrive and WL 323. Approximate germplasm source contributions are M. facata – 18%; Ladak – 18%; M. varia – 28%; Turkistan – 10%; Flemish – 23%; and Chilean – 3%.

  1. Passport is adapted for use in the North Central and East Central regions of the United States. It is intended for use in the North Central, East Central and Great Plains regions. Passport has been yield tested in Illinois, Pennsylvania and Wisconsin.

  1. Flower color of Passport at Syn 2 approximates 100% purple with a trace of variegated and cream. The fall dormancy of Passport is similar to 5246 (Class 3).

  1. Passport has high resistance to anthracnose (Race 1), bacterial wilt, and Phytophthora root rot; resistance to Aphanomyces root rot (Race 1), Aphanomyces root rot (Race 2), stem nematode and pea aphid. Reaction to spotted alfalfa aphid, blue alfalfa aphid, Fusarium wilt, Verticillium wilt and root knot nematode has not been adequately tested.

  1. Breeder seed (Syn 1) was produced in 1996 on 120 plants under cage isolation at Warden, Washington. Sufficient foundation (Syn 2) seed will be produced for the expected life of the variety and 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. Foundation seed must be produced above 40 degrees North latitude. Production of Syn 3 Foundation seed requires consent of the breeder.

  1. Certified seed will be marketed in 1999.

  1. It is undecided whether application will be made for Plant Variety Protection.

  1. The information in this application can be turned over to the PVP office.

  1. Variety Name: Passport Experimental Designation: W309

Date submitted: November, 1998

 

 

 

 

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