Cimarron SR Alfalfa

  1. The genetic origin of Cimarron SR is Cimarron VR (50%) and Cimarron (50%). The breeding method involved recurrent phenotypic selection for resistance to bacterial wilt, Verticillium wilt, Phytophthora, anthracnose race 1, pea aphid and spotted alfalfa aphid, and vigor. The estimated germplasm sources are M. Falcata (2%), Ladak (2%), M. varia (20%), Turkistan (10%), Flemish (26%), and Chilean (40%).
  2. Areas of adaptation for Cimarron SR are East Central and Great Plains. The variety has been tested in Oklahoma and North Carolina. The intended area of use is the East Central region.

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  3. The fall dormancy of Cimarron SR is similar to Saranac. Flower color is 72% purple and 28% variegated as measured in the Syn 2.
  4. Cimarron SR has high resistance to bacterial wilt, anthracnose, Fusarium wilt, Verticillium wilt, Phytophthora root rot, and the pea aphid; resistance to the spotted alfalfa aphid, stem nematode and the southern root knot nematode; and moderate resistance to Aphanomyces (Race 1) root rot.

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  5. Seed increase is on a limited generation basis with one generation each of breeder, foundation, and certified seed classes: i.e. breeder (Syn 1), foundation (Syn 2), certified (Syn 3). Breeder seed was produced under isolation in Cary, NC. Foundation and certified classes are produced by Great Plains Research Company, Inc., under contract with seed growers. Age of stand for seed production for breeder, foundation, and certified seed is 2, 2, and 6 years, respectively. Breeder and foundation seed stocks are maintained by Great Plains Research Company, Inc. Breeder seed was produced in 1996.
  6. Certified seed will be marketed in 1999.
  7. Application will be made for Plant Variety Protection under the Act. The certification option will be requested.

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  8. This information may be forwarded to the PVP office.
  9. Variety name: Cimarron SR Date submitted: 11/15/98

Experimental designation: CimSR

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