WL 515
1. WL 515 is a broad based cultivar resulting from one or more cycles of screening of the following sources for Phytophthora root rot; WL 504 and related experimentals, bacterial wilt resistant IlL 508 and related experimentals, WL 600, WL 512, WL 405, 450 and 451, WL 501-R, UC Salton, and Beltsville 4-AN2. Other Phytophthora resistant selections were used from cage crosses of Lahontan, N529, Atlantic, Williamsburg and WL 209; Zia, Exptl 38 and Exptl 47 of Univ. of CA; N529, Saranac, Williamsburg and P.1. 183,262; WL 400s and Lahontan; WL 306, Atlantic, and Team; and Moapa and Lahontan.
2. The area of adaptation is the Southwestern region of the U.S. at low elevations. WL 515 has been tested in CA and AZ.
3. Flowers of WL 515 are predominately purple with a trace of blue variegated and white. Seed pods are tightly coiled and tan to brown in color at maturity. Fall dormancy is similar to Moapa 69.
4. WL 515 is resistant to the spotted alfalfa aphid, Phytophthora root rot, Fusarium wilt, stem nematode from Santa Maria, pea aphid, and smog damage; moderately resistant to the blue alfalfa aphid, and has low resistance to bacterial wilt. It has not been adequately tested for anthracnose resistance. All aphids used for testing came from the San Joaquin Valley, CA.
5. Breeder seed (Syn 1) was produced on parent plants at Bakersfield, CA in 1973. Sufficient foundation seed was produced for the life of the variety, with reserve seed held in controlled storage. One generation each of breeder (Syn 1), foundation (Syn 2), registered (Syn 3) and certified (Syn 3 or 4) seed classes is recognized. Limitation of stand age for breeder, foundation, registered and certified fields are 1, 2) 2 and 5 years respectively.
6. WL 515 will be offered for sale in 1982.
7. Application for Plant Variety Protection is being made but not under the certification option.