Details for: PI 682085, Beta vulgaris L., 'R21'


Summary Data
Taxonomy:
Beta vulgaris L.
Cultivar:
'R21'
Origin:
Developed –
Received by NPGS:
01 Jun 2017
Improvement Status:
Breeding material
Form Received:
Seed
Life Form:
Biennial
Life Cycle:
Biennial
Availability
This accession is not available. Contact site for status.
 
There are no images for this accession.

Core Passport Data
Taxonomy:
Beta vulgaris L.
Cultivar:
'R21'
Origin:
Developed –
Received by NPGS:
01 Jun 2017
Improvement Status:
Breeding material
Form Received:
Seed
Life Form:
Biennial
Life Cycle:
Biennial
Source History
Developed

California, United States

Developer(s):
Donated
17 June 2017.
California, United States

Donor(s):
Accession Names and Identifiers
'R21'
Type: Cultivar name

R1521
Type: Other or unclassified name

R821
Type: Other or unclassified name

Narrative
R21 is a multigerm (MM), self-sterile (Ss), open-pollinated line that maintains sugar and root yields under both the wild-type (Type A) and Rz1 resistance-breaking (Type-A, IV) strains of BNYVV. It is a product of repeated rounds of recurrent selection on enhanced, broadly based populations of over 120 Beta vulgaris subsp. maritima accessions (selected for rhizomania resistance) crossed with sugar beet. This broadly-based germplasm provides useful genetic variability for continued sugar beet improvement.
Beta vulgaris L.
Genus:
Beta
Section:
Beta
Family:
Chenopodiaceae
Subfamily:
Betoideae
Tribe:
Beteae
Nomen number:

300073
Place of publication:

Sp. pl. 1:222. 1753
Verified:
02/06/1987 by ARS Systematic Botanists.
Other conspecific taxa
Beta vulgaris L. subsp. adanensis (Pamukç. ex Aellen) Ford-Lloyd & J. T. Williams (0 active accession[s])
Beta vulgaris L. subsp. maritima (L.) Arcang. (627 active accession[s])
Beta vulgaris L. subsp. vulgaris (1853 active accession[s])
Beta vulgaris subsp. cicla (0 active accession[s])
Autonyms (not in current use), synonyms and invalid designations
Common names
LanguageNameAlternate namenoteseqCitation
Englishbeet  1Botanical Society of the British Isles. BSBI taxon database (on-line resource).
Annotations
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Citations
Pedigree
Description:
During development of R21, rhizomania resistant plants from C26 and C27 were selected from field trials and increased by open-pollination. Seed was collected in bulk and planted in the next year’s field trials. Four rounds of recurrent selection were conducted in fields in Salinas, CA, selecting plants with resistance to the wild-type (Type A) and Rz1 resistance-breaking (Type-A, IV) strains of BNYVV. The final round of recurrent selection and increase produced R21.
Intellectual Property Rights
Journal of Plant Registration. GP-291, SUGARBEET. Issued: 01 Jan 2018.

Observations

Phenotype Data

CategoryDescriptorDescriptionValueSample SizeStudyInventoryAvailability
OTHERMultigermicityMultigermicity4 - 4: Multigerm SUGARBEET.MULTIGERMICITY.PULLMANPI 682085 2018o SDNot Available