1. UN 74 is a synthetic variety with 428 parent plains. Plains were selected for multifoliolate expression and resistance to one or more of the following pests: bacterial wilt, Verticillium wilt, Phytophthora root rot, anthracnose (race I), Aphanomyces root rot (race 1) and spotted alfalfa aphid. Germplasm sources used in developing UN 74 were Achieva (50%), Jewel (25%) and Blazer XL (25%). Approximate germplasm source contributions are: M.falcata - 4%, Ladak - 5%, M. varia - 26%, Turkistan - 4%, Flemish - 58% and Chilean - 3%.
2. UN 74 is adapted to the north central and northwestern U.S. and is intended for use in the northern and central U.S. It has been tested in Colorado, Iowa, Michigan, Minnesota, Nebraska, Oregon and Wisconsin.
3. UN 74 is a moderately dormant variety with fall dormancy similar to Saranac. Flower color of Syn. 2 generation is 62% purple, 38% variegated, and a trace of cream, yellow and white.
4. UN 74 has high resistance to anthracnose (Race I), bacterial wilt, Fusarium wilt, Phytophthora root rot and spotted alfalfa aphid with resistance to Verticillium wilt and pea aphid. It has moderate resistance to stem nematode and Aphanomyces root rot (Race I). Reaction to blue alfalfa aphid and root knot nematode has not been adequately tested.
5. Seed increase is on a limited generation basis with one generation of breeder, and two generations of the foundation and certified seed classes. Breeder (Syn 1), foundation (Syn2 or Syn3) and certified (Syn3 or Syn4) classes will be recognized. Production of Syn3 foundation seed requires the consent of the breeder. Breeder seed was produced at CaIdwell, ID in 1989. Sufficient foundation seed for the projected life of the variety will be maintained by Forage Genetics. Stands of foundation and certified seed fields are limited to 3 and 6 years, respectively.
6. Certified seed will be marketed in 1994.
7. No decision has been made concerning Plant Variety Protection.
8. This information can be forwarded to the PVP office.