1. NY0131 is the result of a three-way population cross. The initial cross was between two plant
populations: Seedway 9558 and a population comprised of germplasm related to Iroquois, Saranac AR,
Oneida VR, and Vertus, followed by phenotypic recurrent selection for multiple disease resistance and
selection in the field for plant vigor, freedom of diseases, resistance to lodging, and lower forage neutral
detergent fiber and acid detergent fiber concentrations. This population cross was done by hand as fullsib
crosses between 100 clones per population. This population cross was crossed with a population
derived from Magnum III after selection for resistance to anthracnose (Race 1) (2 cycles), Verticillium
wilt (2 cycles), and Phytophthora root rot (1 cycle). Full-sib crosses between the populations were made
by hand (74 clones per population). Seed of the Syn. 1 generation was a bulk of equal weight of seed per
cross. The Syn. 2 generation (breeder seed) was produced in 2001.
2. NY0131 is adapted and intended for use in the North Central and East Central USA for hay, haylage,
greenchop, and dehydration. It has been tested throughout New York and in Pennsylvania.
3. NY0131 is a dormant variety with fall dormancy similar to the FD3 check. Its flower color is 93%
purple and 7% variegated, and pod shape is 96% tightly coiled and 4% loosely coiled in the Syn. 2
4. NY0131 has high resistance to Fusarium wilt, Verticillium wilt, and anthracnose (Race 1); resistance
to bacterial wilt and Phytophthora root rot; and low resistance to Aphanomyces root rot (Race 1). It has
not been tested for resistances to pea aphid, spotted alfalfa aphid, blue alfalfa aphid, root knot nematode,
and stem nematode.
5. In 2001, breeder seed (Syn. 2) was produced under cage isolation in Caldwell, ID, in sufficient
quantity to last the lifetime of the variety. This seed is maintained under controlled environmental
conditions by the Department of Plant Breeding and Genetics at Cornell University. Foundation seed
(Syn. 3) may be produced from breeder seed in Northwest USA on stands no more than 3 years old unless
by consent of the breeder. Certified seed (Syn. 3 or 4) may be produced from breeder or foundation seed
on stands no more than 6 years old.
6. Pending official certification, certified seed will first be marketed in 2007.
7. Application for Plant Variety Protection will not be made.
8. This information may be forwarded to the PVP office.
9. Variety Name: Date submitted: December 1, 2005
Experimental designations: NY0131