WL 312
Applicant: Waterman Loomis Co.
200 Century Plaza, Suite 110
Columbia, MD 21044
Description
WL 307, WL 311, WL 318 and 10 advanced experimental synthetics, which had been screened for anthracnose and/or bacterial wilt resistance were observed in the Fulton, MD Phytophthora root rot nursery. After one year, 163 survivors were selected (17.4% from WL 307; 20.2% each from WL 311 and WL 318; and 52.2% from the 10 experimental synthetics) and were recombined to constitute 73T16 and 74T12.
WL 312 being intermediate in fall dormancy, similar to WL 311, is intended to be merchandised for hay or haylage production from New Jersey and North Carolina west to Iowa, Nebraska and Kansas. Within this region of adaptation it is recommended for use in bacterial wilt, Phytophthora root rot and Fusarium wilt infested soils where anthracnose, pea aphid, and spotted alfalfa aphid occur. WL 312 is currently being tested in Maryland, Pennsylvania, New York, North Carolina, Ohio, Illinois, Michigan, southern Wisconsin, Minnesota, Iowa, Nebraska and Missouri.
WL 312 has approximately 85% purple, 12% blue variegated, 2% blue and 1% purple flowers.
WL 312 combines high resistance to bacterial wilt, pea aphid (endemic to Maryland) and spotted alfalfa aphid (endemic to lower San Joaquin Valley of California) with moderate resistance to anthracnose, Fusarium wilt and Phytophthora root rot. Reaction to stem nematode is unknown.
Seed production shall be on a three generation basis: breeder, foundation and certified. (Sufficient breeder seed was produced in Kern County, California, and is maintained in environmentally controlled storage.) Breeder seed, the composite harvest from 163 parent clones interpollinated under cage by honey bees, will be planted in the northern region of adaptation to produce foundation seed. Certified seed may be produced from either breeder or foundation seed. No other generation or class will be recognized.
Certified seed will be available in 1979.
Application for Plant Variety Protection is unlikely.