1. C/W-339 is a synthetic variety with 310 parent plants.
Parents trace to various populations selected for resistance to the following
pests: bacterial wilt, Verticillium wilt, anthracnose, Phytophthora
root rot and spotted alfalfa aphid.
The following germplasm sources, in order of contribution, were used
in the development of this variety: DK-135, Emerald, Oneida, Advantage,
Action, G-2852, Excalibur, and M. falcata (PI 268754).
2. C/W-339 is a winter-hardy variety adapted to for use in the northcentral and northeastern U.S. for hay, haylage and greenchop. The variety has been tested in Iowa, Minnesota, Pennsylvania and Wisconsin.
3. Fall dormancy is similar to Ranger. Flower color is approximately 75% purple, 25% variegated and <1% yellow and white.
4. C/W-339 has high resistance to anthracnose, and resistance to bacterial wilt, Verticillium wilt, Fusarium wilt, Phytophthora root rot, stem nematode and pea aphid. C/W-339 is moderately resistant to spotted alfalfa aphid.
5. Seed increase is on a limited generation basis with one generation each of breeder and certified seed classes, and two generations of foundation seed. 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 authorization by the breeder. Stand limitations are 1, 2 and 6 years for breeder, foundation and certified seed fields respectively.
6. Certified seed will be marketed in 1987.
7. No decision has been made concerning Plant Variety Protection.