1. GT 13R Plus originated
from a 5-year-old hay field planted to AS 13R near Patterson,
CA.. A portion of the field
which had been decimated by Phytophthora root rot and other factors was
allowed to set seed in 1980. The original seed was planted in Kern County,
CA, to produce breeder (Syn 2) seed of the variety. Germplasm sources are
Turkistan (30%) and Ahican (700/.).
2. GT 13R Plus is adapted to and intended for use in the San Joaquin, Sacramento and coastal valleys of central and southern California and the high desert valleys of southern California, Arizona, Nevada, New Mexico and west Texas. It has been tested in California and New Mexico.
3. Fall dormancy of GT 13R Plus is similar to Moapa 69. Flower color of Syn 2 generation is 100% purple.
4. Gt 1 3R Plus has high resistance to Fusarium wilt, resistance to Phytophthora root rot, bacterial wilt, downy mildew, spotted alfalfa aphid and stem nematode; moderate resistance to pea aphid; and low resistance to blue alfalfa aphid. It is susceptible to anthracnose. It has not been tested for reaction to Verticillium wilt.
5. Breeder (Syn 2) seed was produced in Kern County, CA, with a sufficient quantity for the expected life of the variety held in controlled storage. Seed increase is limited to one generation each of breeder, foundation and certified classes. A 3 and 6-year stand life is permitted on fields producing foundation and certified seed, respectively. All seed production is limited to the southern region of adaptation.
6. Certified seed will be available in 1987.
7. Application for Plant Variety Protection has been made and the certification option was not requested.
8. This information can be
forwarded to the PVP office.