Vancor
1. Vancor was developed by combining two pest resistant populations which were developed independently of each other. KOPT4 was the result of four cycles of selection from Gladiator for Phytophthora root rot resistance in the disease nursery at Stanton, MN. Thirty-four plants were selected in cycle 1 and more than 100 plants in each of cycles 2 through 4. MW75-15 was the result of one cycle of selection for anthracnose in the greenhouse at Washington, IA. Twenty-nine plant selections from Arc contributed 50% of the germplasm to MW75-15 and 16 selections from Gladiator contributed the remaining 50%. Equal amounts of seed from the two populations, KO2PT4 and MW75-15 were bulked and pollinated under cages at Woodland, Ca., to produce MW76-9 (Syn 1) in 1976. During 1977, MW76-9 was randomly pollinated in isolation to produce Vancor.
2. Vancor has been tested in Iowa, Minnesota, Nebraska, Missouri, Tennessee, Montana and Washington. Probable marketing areas will include Northern and Central areas of the U.S., primarily for hay, haylage or greenchop.
3. Vancor ranks between Vernal and Saranac-AR in fall dormancy. It has approximately 41% light purple, 37% medium dark purple, 13% dark purple and 9% variegated flowers.
4. Vancor has resistance to bacterial wilt and anthracnose; it has moderate resistance to Phytophthora root rot, Fusarium wilt, and stem nematode. It has low resistance to spotted alfalfa aphid and is susceptible to pea aphid.
5. Seed classes will be breeder, foundation and certified. Adequate breeder seed (Syn 2) has been produced for the expected life of the variety. Limitation on age of stand for each class will be two, three and five years for breeder, foundation and certified respectively.
6. Certified seed will be available in 1981.
7. Application for plant variety protection is not anticipated.