WL 313
1. WL 313 was developed from 288 plant selections derived mostly from Vernal, Atlantic and Saranac, with less than lO% of the germplasm contributed by M. falcata x M. sativa crosses and Neb 67-2813. Clones had been screened for resistance to bacterial wilt, Fusarium wilt, anthracnose, Stemphyllium and Lepto leafspots, pea aphid and the spotted alfalfa aphid. WL 313 was tested under the experimental designation 74 CaB, 75 CaB, 76 CaB and 74-75-76 CaB. Breeder seed represents approximately equal quantities of seed from the three successive seed harvests of the parent plants.
2. WL 313 surpasses WL 311 in stand persistence and yield potential, and will be marketed for hay, haylage, greenchop and dehydration purposes in those areas where WL 311 has performed well: from New Jersey and North Carolina west to Iowa, Nebraska and Kansas. It is currently being tested in Maryland, Ohio, Illinois, southern Wisconsin, Minnesota and Nebraska.
3. WL 313 is similar in fall dormancy to Saranac and has approximately 9O% light purple to purple, 5% dark purple, 3% light yellow to yellow, 2% blue variegated and a trace of cream flowers.
4. WL 313 has high resistance to bacterial wilt, Fusarium wilt and pea aphid; moderate levels of resistance to anthracnose and the spotted alfalfa aphid, and a low level of resistance to Phytophthora root rot. Stem nematode resistance is being evaluated.
5. Only breeder, foundation and certified seed classes will be recognized. Breeder seed will be planted in the Northern region of adaptation to produce foundation seed with a maximum of three harvest years permitted. Certified seed may be produced from either breeder or foundation seed.
6. Certified seed will be available in 1980.
7. An application for Plant Variety Protection will not be prepared.