Details for: PI 702361, Helianthus annuus L., 'HA-R20'


Summary Data
Taxonomy:
Helianthus annuus L.
Cultivar:
'HA-R20'
Origin:
Developed – North Dakota, United States
Received by NPGS:
27 Feb 2023
Form Received:
Seed
Availability
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Seed50 countPI 702361 24ncfo01 SD
 
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Core Passport Data
Taxonomy:
Helianthus annuus L.
Cultivar:
'HA-R20'
Origin:
Developed – North Dakota, United States
Received by NPGS:
27 Feb 2023
Form Received:
Seed
Source History
Developed

North Dakota, United States

Developer(s):
Accession Names and Identifiers
'HA-R20'
Type: Cultivar name

Narrative
HA-R20 is a F3-derived F4 restorer selection from the cross of HA-DM2 and HA-R8. HA-DM2 (PI 687022) is a confection restorer line resistant to rust and DM released by USDA Sunflower and Biology Research Unit and the North Dakota Agricultural Experiment Station in 2017. HA-DM2 harbors the R12 rust gene and DM PlArg gene mapped to linkage groups (LGs) 11 and 1 of the sunflower genome, respectively. HA-R8 (PI 607511) is an oilseed restorer line resistant to rust released by USDA and the North Dakota Agricultural Experiment Station in 2001. The rust R gene in HA-R8 was named R15 and mapped to LG8. HA-R20 was developed by the pedigree breeding method and DNA marker-assisted selection for pyramiding of the rust R-genes R15 from HA-R8 and R12 from HA-DM2 and the DM R gene PlArg from HA-DM2. F1 hybrids were created by crossing HA-DM2 to HA-R8 in 2019. Homozygous pyramids with triple-gene combination, R12/R15/PlArg were selected using DNA markers from 188 F2 individuals and advanced to the F3 generation. The F3-derived HA-R20 were further evaluated for their reaction to rust and downy mildew infection and homozygosity for the both the rust R genes, R15 and R12, and DM R gene PlArg verified by DNA markers. HA-R20 is resistant to all known races of North American sunflower rust and all known races of the pathogen causing DM. Plant height of HA-R20 was 154 cm and flowered 64 days after planting in the field nursery at Glyndon, MN during the summer of 2021
Helianthus annuus L.
Genus:
Helianthus
Family:
Asteraceae (alt. Compositae)
Subfamily:
Asteroideae
Tribe:
Heliantheae
Nomen number:

27923
Place of publication:

Sp. pl. 2:904. 1753
Verified:
03/08/2010 by ARS Systematic Botanists.
Other conspecific taxa
Autonyms (not in current use), synonyms and invalid designations
Autonym(s)
Helianthus annuus L. subsp. annuus
Helianthus annuus L. var. annuus

Heterotypic Synonym(s)
Helianthus annuus L. subsp. jaegeri (Heiser) Heiser
Helianthus annuus L. subsp. lenticularis (Douglas) Cockerell
Helianthus annuus L. subsp. texanus Heiser
Helianthus annuus L. unranked lenticularis (Douglas) Cockerell
Helianthus annuus L. var. macrocarpus (DC.) Cockerell
Helianthus jaegeri Heiser
Helianthus lenticularis Douglas

Common names
LanguageNameAlternate namenoteseqCitation
Englishsunflower  1Wiersema, J. H. & B. León. 1999. World economic plants: a standard reference CRC Press, Boca Raton, FL.
English (Canada)sunflower Agriculture & Agri-Food Canada official name2Darbyshire, S. J. 2003. Inventory of Canadian Agricultural Weeds Agriculture and Agri-Food Canada. 252-253.
Frenchgrand soleil  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Frenchtournesol  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
French (Canada)tournesol Agriculture & Agroalimentaire Canada nom officiel2Darbyshire, S. J. 2003. Inventory of Canadian Agricultural Weeds Agriculture and Agri-Food Canada. 252-253.
GermanSonnenblume  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Italiangirasole  2International Seed Testing Association. 1982. A Multilingual Glossary of Common Plant-Names 1. Field crops, grasses and vegetables, ed. 2.
Japanese Rōmajihimawari  2Walker, E. 1976. Flora of Okinawa and the southern Ryukyu Islands.
Portuguesegirassol  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Spanishgirasol  2Ortega-Sada, J. L. 1987. Flora de interes apicola y polinizacion de cultivos.
Swahilializeti  2PROTABASE, the information base of PROTA (Plant Resources of Tropical Africa) (on-line resource).
Swedishsolros  2Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource)
Transcribed Koreanhaebaragi  2Mun-Chan, B. et al. 1986. A checklist of the Korean cultivated plants. Kulturpflanze 34:102.
Annotations
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Citations
Pedigree
Description:
HA-R20 is a F3-derived F4 restorer selection from the cross of HA-DM2 and HA-R8. HA-DM2 (PI 687022) is a confection restorer line resistant to rust and downy mildew (DM) with the R12 rust gene and DM PlArg gene, respectively. HA-R8 (PI 607511) is an oilseed restorer line with the R15 rust gene.
Intellectual Property Rights
Journal of Plant Registration. GP-387, SUNFLOWER. Issued: 01 Jan 2024.
  • Qi, L. L., G. J. Ma, X. H. Li, & G. J. Seiler. 2024. Registration of HA-R20 and HA-R21 Confection Sunflower Germplasms Resistant to Rust and Downy Mildew. J. Pl. Registr. 18(1):164. DOI: 10.1002/plr2.20324.