Germplasm: AKER_8486
Identification
Germplasm name
AKER_8486
Accession number
PI 655307
Germplasm PUI
Accession synonyms
EL-X3, PI 655307
Taxon
Genus
Beta
Species
vulgaris
Subtaxa
subsp. vulgaris cv. Sugar beet
Biological status
Wild
Pedigree
EL-X3 (4PS1928) was constructed from a cross between single plants of WB185 and 6869, and F1 seed was planted in the Saginaw observation nursery. 21 plants were selected for vigor, and self-pollinated in the greenhouse. Seed of these 21 lines was combined and grown in the 2003 Aphanomyces nursery in Shakopee, MN. Plants with reasonably evident taproots and few disease symptoms were selected and increased in Shakopee, and increased again in East Lansing, MI.
Comments
EL-X3 is not currently suitable for variety development since it still has many characteristics of wild materials, however it has some improvement in taproot characteristics relative to the wild accession. In 2003, EL-X3 was tested in the Shakopee Aphanomyces nursery and rated on a 1 (resistant) to 9 (susceptible) scale. The average rating of two Aphanomyces tolerant and two susceptible standards was 2.0 and 7.0, respectively (LSD(0.05)=1.83, average of two late readings), the sugar beet parents SP6822 and 6869 had scores of 1.0 and 5.5, respectively, and EL-X3 scored 4.0. The wild beet parent of EL-X3 is WB185 (PI 546409), collected near Plymouth, England. WB185 is diploid, biennial, prostrate, with reported resistance to Cercospora leaf spot and Polymyxa betae. It was used because its potential resistance to Aphanomyces diseases caused by Aphanomyces cochlioides was evident by having a disease score of 1.0 (resistant) (rating system of 0-9 scale with 0 showing no symptoms and 9 being dead) in the 1994 Beta germplasm evaluation. Susceptible sugar beet 6869 (a progenitor of C869, PI 628754) was used as the sugar beet parent, and as a donor of the self-fertility (Sf) and nuclear male sterility characters. This release is expected to be self-fertile and segregating for nuclear male sterility. Tested seed was harvested from the sugar beet parent.
Origin site
Depositary
Code
USA126
Acronym
GRIN
Organization
USDA
Address
10300 Baltimore Blvd., Room 330, Bldg. 003, BARC-West, MD 20705 BELTSVILLE, United States of America
Website
Institution
Presence status
Not maintained
Collector
Collecting site
Distributors
Institute | Accession number | Distribution status |
---|---|---|
Code
USA126
Acronym
GRIN
Organization
USDA
Address
10300 Baltimore Blvd., Room 330, Bldg. 003, BARC-West, MD 20705 BELTSVILLE, United States of America
Website
|
PI 655307 | Extrernal distributor |
Collection
AKER collection (Base collection)
Collection AKER (Base collection)