1. ABT 205 has 377 parent plants all tracing to Quantum 50% and A-295 50%. Both Quantum and A- 295 were seeded into replicated grazing trials near Warrensburg, MO in March of 1991. Plots were grazed continuously for 70 days in 1991 and 155 days each in 1992 and 1993. In October of 1993 when stands had declined to about 10% plots were dug with the healthiest plants having large symmetrical crowns saved. Breeder seed (syn 1) was produced in the greenhouse on the original 377 plants and harvested in bulk in the spring of 1994. Additional breeder seed was produced in the field near Nampa, ID in 1994 from the original parent plants and approximately 15 cuttings of each clone transplanted at random and harvested in bulk. Estimated % germplasm sources contributing to the genetic constitution of this variety. M. falcata Ladak M. varia Turkistan Flemish Chilean 8 9 19 20 30 8 Peruvian Indian African Arabian Unknown 5 0 0 0 1
2. ABT 205 appears to be adapted to and is intended for use in the North Central Region of the U.S. It is intended for use as a grazing crop as well as for making stored feed.
3. Fall dormancy of ABT 205 is similar to Vernal. Winter survival rating (2) is similar to vernal. Flower color is approximately 64% purple and 35% variegated with a trace of cream, white and yellow. Tolerance to intensive grazing is similar to Alfagraze.
4. ABT 205 has high resistance to bacterial wilt, fusarium wilt, and phytophthora root rot, resistance to verticillium wilt, anthracnose (race 1), aphanomyces root rot (race 1) and moderate resistance to pea aphid. It has not been tested for reaction to stem nematode, spotted alfalfa aphid, blue alfalfa aphid and root knot nematode.
5. Seed increase is limited to one generation each of breeder (syn 1), foundation (syn 2) and certified (syn 3) seed classes. Certified seed may be produced from either breeder or foundation classes. A 1, 3 and 6 year stand life is permitted on fields producing breeder, foundation and certified seed classes respectively. Foundation seed production is limited to the Pacific Northwest. Breeder seed was produced in 1994. ABI will maintain sufficient seed stocks for the life of the variety.
6. Certified seed will be available in 1997.
7. Plant variety protection will not be applied for.
8. This information can be forwarded to the PVP office.
9. Variety Name: ABT 205 Date Submitted November 1996
Experimental designations ZG 9418
Page 12 of 12 (1996)