5432

1.  5432 is an eleven clone synthetic with parents originating from several experimental lines tracing to 555, Saranac, Culver, Vernal, ATRA55, Flemish, Flemish x ATRA55, MSA-C4, MSB-C4 and other germplasms with minor contributions. Parent plants were selected from several experimental populations for bacterial wilt, Verticillium wilt and spotted alfalfa aphid. In addition, parental clones were evaluated for forage yield and pest resistance using progeny row tests at several locations.

2.   5432 is a winterhardy cultivar adapted to the central and northern region of the United States for hay, haylage, greenchop and dehy. The states in which 5432 have been tested are: Iowa, Minnesota, Wisconsin, Illinois, Kansas, Pennsylvania, New York, Maryland, Michigan, Indiana, and Texas.

3.   Flower color of the Syn 1 generation is approximately 36% dark purple to moderately dark purple, 62% light purple to very light purple and 2% light blue variegated. Growth habit is erect in mid summer and semi-erect in the fall. Fall dormancy is similar to Saranac.

4.   5432 has high resistance to bacterial wilt, Fusarium wilt and spotted alfalfa aphid; resistance to Verticillium wilt and pea aphid; moderate resistance to Phytophthora root rot. Resistance to stem nematode and anthracnose has not been adequately tested.

5.   Breeders seed (Syn 1) was produced on rooted cutting of parental clones in "cage isolation" over 2 years and bulked to produce sufficient quantity for life of variety. Certified seed may be produced from either breeder or foundation seed. One generation each of breeder, foundation and certified seed classes is recognized. A maximum of 3 consecutive harvest years is permitted on stands producing foundation seed with 5 consecutive harvest years maximum on stands producing certified seed. Foundation seed production is limited to the northern region of adaptation.

6.   Seed will be marketed in the spring of 1986.

7.   Application for Plant Variety Protection will be made and the certification option will not be requested.

Variety Description Amendments

Paragraph four (4), stem nematode changed to having "moderate resistance" from "not adequately tested".

 

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