GH750

 

 

  1. GH750 is a 180-plant synthetic variety resulting from phenotypic recurrent selection for resistance to Aphanomyces root rot (Race 1). Parental germplasm traces to GH755, Multi-plier and WL 252 HQ. Approximate germplasm source contributions are M. facata – 14%; Ladak – 15%; M. varia – 24%; Turkistan – 23%; Flemish – 18%; and Chilean – 6%.

  1. GH750 is adapted for use in the North Central and East Central regions of the United States. GH750 has been yield tested in Pennsylvania and Wisconsin.

  1. Flower color of GH750 at Syn 2 approximates 100% purple with a trace of variegated and white. The fall dormancy of GH750 is similar to Legend (Class 4).

  1. GH750 has high resistance to anthracnose (Race 1), bacterial wilt, Fusarium wilt, Verticillium wilt, Phytophthora root rot and Aphanomyces root rot (Race 1); resistance to pea aphid and spotted alfalfa aphid; and moderate resistance to stem nematode. Reaction to blue alfalfa aphid and root knot nematode has not been adequately tested.

  1. Breeder seed (Syn 1) was produced in 1995 on 180 plants under cage isolation at Bakersfield, California. 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: GH750 Experimental Designation: C230

Date submitted: November, 1998

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