1. AP 8832 is a synthetic variety
with 38 parent clones. Parent clones trace to 17 populations selected for
resistance to the following pests: bacterial wilt, Fusarium wilt, Verticillium
wilt, Phytophthora root rot, anthracnose and Aphanomyces. Phenotypic recurrent
selection was used. Final selections were made from a 2-year-old space-plant
selection nursery at Marshfield,
Wisconsin, based on vigor, leafhopper yellowing resistance, leaf disease
resistance, winter injury and fall dormancy reaction. Parentage traces
to Trident II (13%), Clipper (13%), Exp NAPB 34 (11%), Stine 9227 (8%),
Arrow, Profit, Surpass, Apollo Supreme, Starmaster, Riley and Exp AP 8635
(5% each), Garst
636, Apollo and Baker (3% each),
with 11% from numerous other sources. Approximate germplasm contribution
sources are: M. falcata (9%), Ladak (8%), M. varia (19%),
Turkistan (14%), Flemish (34%), Chilean (10%), Peruvian (4%) and 2% unknown.
2. AP 8832 appears to be adapted to and is intended for use in the North Central U.S. It has been tested in Wisconsin and Iowa.
3. Fall dormancy of AP 8832 is similar to Ranger. Flower color of Syn 2 generation is approximately 69% purple and 31% variegated, with a trace of cream, white and yellow.
4. AP 8832 has high resistance to Fusarium wilt and Phytophthora root rot; resistance to Verticillium wilt, anthracnose (race 1) and pea aphid; and moderate resistance to Aphanomyces (race 1). Reaction to bacterial wilt, stem nematode, spotted alfalfa aphid, blue alfalfa aphid and root knot nematode has not been determined.
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 classes respectively. Foundation
seed production is
limited to the Pacific Northwest.
Breeder seed was produced in 1988. ABI will maintain sufficient seed
stocks for the projected life of the variety.
6. Certified seed will be available in 1993.
7. Plant Variety Protection will not be applied for.
8. This information can be forwarded to the PVP office.