NAPB 26B
1. NAPB 26B is a 49-clone synthetic variety. Parent clones were selected following 3 or 4 cycles of field selection for resistance to Verticillium wilt, from populations which had previously been selected for winter survival plus resistance to Phytophthora root rot, anthracnose, bacterial wilt and Fusarium wilt. Parentage traces predominately (in order of contribution) to Apollo II, Endure, Anchor, Apollo, Trident, WL 318, Saranac AR and Vertus.
2. NAPB 26B is intended for use in the northern region of the U.S. as hay, haylage, greenchop or dehy production. It has been tested in Iowa, Illinois, Idaho, and Wisconsin.
3. Fall dormancy is similar to Ranger. Flower color of foundation generation is approximately 80% purple and 20% variegated.
4. NAPB 26B has high resistance to Fusarium wilt, resistance to Phytophthora root rot, Verticillium wilt, and bacterial wilt, moderate resistance to anthracnose and potato leafhopper yellowing. Reaction to pea aphid, spotted alfalfa aphid and stem nematode has not been adequately tested.
5. Breeder (Syn 1) seed was produced on cuttings at Nampa, Idaho, bulked over two years and is held in cold storage. Seed increase is limited to one generation each of breeder, foundation, and certified classes. Certified seed may be produced from either breeder or foundation seed. A 3 and 6 year stand life is permitted on fields producing foundation and certified seed respectively. Foundation seed production is limited to the northern region of adaptation.
6. Certified seed will be available in 1986.
7. No decision has been made on application for Plant Variety Protection.