1. VS-931 is a synthetic variety
with 211 parent plants. Parent plants were selected for multifoliolate
expression and resistance to one or more of the following pests: bacterial
wilt, Verticillium wilt, Phytophthora root rot, anthracnose, Aphanomyces
root rot,
Leptosphaerulina leafspot,
and spotted alfalfa aphid. The following germplasm sources were used in
the development of VS-931: VS-907, Jewel, Zenith, Blazer XL, and Pacesetter.
Approximate germplasm source contributions are: M. falcata
-- 5%, Ladak -- 6%, M. varia -- 29%, Turkistan -- 3%, Flemish
-- 51%, and Chilean 6%.
2. VS-931 is adapted to and intended for use in the northern U.S. for hay, haylage, greenchop, or dehy production. It has been tested in Idaho, Wisconsin, Minnesota, Missouri, and Pennsylvania.
3. VS-931 is a dormant variety. Fall dormancy is similar to Ranger. Flower color is 85% purple, 15% variegated, and a trace of white, yellow and cream. At first flower in autumn approximately 70% of the plants show some multifoliolate expression.
4. VS-931 has high resistance
to anthracnose (race 1), Fusarium wilt, and Phytophthora root rot with
resistance to bacterial wilt, Verticillium wilt, and Aphanomyces root rot
(race 1). It has low resistance to stem nematode. Reaction to blue alfalfa
aphid, spotted
alfalfa aphid, and pea aphid
have not been 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 (Syn.2 or Syn.3), and certified (Syn.3 or Syn.4) classes will be recognized. Production of Syn.3 foundation seed requires the consent of the breeder. Breeder seed was produced under cage isolation at Woodland, CA. Sufficient foundation seed for the projected life of the variety will be maintained by VISTA. Stands of foundation and certified seed fields are limited to 3 and 6 years, respectively.
6. Certified seed will be marketed in 1992.
7. No decision has been made concerning Plant Variety Protection.
8. This information can be
forwarded to the PVP office.