Ca 7931-32
(experimental designation)
1. Ca 7931-32 is a 23 clone synthetic variety. Clones were selected for tolerance to potato leafhopper yellowing from 17 experimental cage combinations developed on the basis of 5 or more cycles of nursery selection and recombination; yield testing and screening tests for one or more of the following: bacterial wilt, anthracnose, Phytophthora root rot and pea aphid. Source material traces to Vernal, Sacranac, Kanza, Atlantic, WL 305 and WL 309 with minor contributions from Team, Ranger, Grimm, WL 215, Nomad, Titan, Michigan R8 and PI 141, 642.
2. Ca 7931-32 is a moderately winter hardy variety adapted for use in the Midwestern and northeastern US for hay, haylage and dehydration purposes. Ca 7931-32 has been tested in Maryland, Ohio, Illinois, Wisconsin and Washington and will be marketed in the northwestern, northcentral, and northeastern US.
3. Approximately 95% of the flowers are purple to dark with 5% blue and blue variegated and a trace of cream. Mid-summer growth is erect, with fall growth similar to DuPuits.
4. Ca 7931-32 has resistance to bacterial wilt, Fusarium wilt, Phytophthora root rot and spotted alfalfa aphid; moderate resistance to anthracnose, pea aphid, blue alfalfa aphid, Verticillium wilt and stem nematode; and tolerance to potato leafhopper yellowing.
5. Breeder seed (Syn 1) was produced on 23 selected clones grown under cage isolation at Bakersfield, California. Sufficient foundation seed will be produced at Nampa, Idaho, for the life of the variety. One generation each of breeder (Syn 1), foundation (Syn 2) and certified seed (Syn 3) is recognized. A maximum of 3 harvest years are permitted for stands producing foundation seed and 5 harvest years for stands producing certified seed.
6. Certified seed will be marketed in 1984.
7. Application will not be made for Plant Variety Protection.
Variety Description Amendments
Paragraph three (3) change last sentence: "Mid-summer growth is erect, with fall growth similar to Saranac." (instead of DuPuits)
Name: WL 320