WL 221
1. WL 221 is comprised of 169 parent plants, selected in approximately equal numbers from the polycross progenies of ten clones that had been screened for bacterial wilt, Fusarium wilt, Lepto, Stemphyllium, and common leafspots and anthracnose. Approximately 85% of the original parentage traces to Saranac, Vernal, Atlantic and Narragansett with l5% from Culver and M. falcata x M. sativa crosses.
2. WL 221 is a fall dormant variety intended for merchandising from the Northern Great Plains through the northern portion of the U.S. and adjacent areas of Canada. It is recommended for use on bacterial wilt and Fusarium wilt infested soils and where damage from pea aphids and anthracnose may be expected. WL 221 is currently under test in Maryland, Pennsylvania, Ontario, Illinois, Michigan, Wisconsin and Nebraska.
3. WL 221 has approximately 4O% purple, 58% variegated, l% yellow and 1% white flowers. Fall dormancy is similar to Vernal.
4. WL 221 has resistance to bacterial wilt, pea aphid and the spotted alfalfa aphid with moderate resistance to anthracnose and Fusarium wilt. It has a low level of resistance to stem nematode and is susceptible to Phytophthora root rot.
5. Only breeder (Syn 1), foundation and certified seed classes will be recognized. Breeder seed will be planted in the northern region of adaption to produce foundation seed with 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. Application for Plant Variety Protection not anticipated.