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Registration of Oilseed Sunflower Restorer Germplasms RHA 476 and RHA 477, Adapted for Short Season Environments
Author(s) -
Hulke Brent S.,
May William E.
Publication year - 2018
Publication title -
journal of plant registrations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.316
H-Index - 21
eISSN - 1940-3496
pISSN - 1936-5209
DOI - 10.3198/jpr2017.07.0048crg
Subject(s) - downy mildew , biology , sunflower , helianthus annuus , agronomy , hybrid , crop , yield (engineering) , inbred strain , germplasm , horticulture , biochemistry , materials science , gene , metallurgy
Northward expansion and double crop use of sunflower (Helianthus annuus L.) is limited by the lack of commercial hybrids with early maturity. We seek to provide the sunflower industry with new, early‐maturing restorer inbred germplasms with high yield potential and favorable agronomic and seed oil traits, specifically, resistance to downy mildew, tolerance to postemergent herbicides such as the imidazolinones, and increased oleic acid in the seed oil. RHA 476 (Reg. No. GP‐344, PI 682129) and RHA 477 (Reg. No. GP‐345, PI 682130) are restorer inbred germplasms developed by pedigree selection and testcross evaluation that can fill this need. RHA 476 possesses high yield potential and high oleic acid (≥850 g kg −1 ) in the seed oil. RHA 477 possesses high yield potential, downy mildew resistance conditioned by Pl ARG , and imidazolinone herbicide tolerance. These lines were released by the USDA‐ARS, Fargo, ND, in collaboration with Agriculture and Agri‐Food Canada, Indian Head, SK, to fill the need for publicly available lines with early maturity in a high‐yielding genetic background.