Location: Sunflower and Plant Biology ResearchTitle: Registration of oilseed sunflower germplasms RHA 461, RHA 462, RHA 463, HA 465, HA 466, HA 467, and RHA 468 with diversity in Sclerotinia resistance, yield, and other traits Author
|Ma, Guojia - North Dakota State University|
|Gulya, Thomas - Retired ARS Employee|
Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/4/2017
Publication Date: 1/18/2018
Citation: Hulke, B.S., Ma, G., Qi, L.L., Gulya, T.J. 2018. Registration of oilseed sunflower germplasms RHA 461, RHA 462, RHA 463, HA 465, HA 466, HA 467, and RHA 468 with diversity in Sclerotinia resistance, yield, and other traits. Journal of Plant Registrations. 12:142-147. https://doi.org/10.3198/jpr2017.04.0023crg.
DOI: https://doi.org/10.3198/jpr2017.04.0023crg Interpretive Summary: Seven sunflower inbred germplasms were released that provide resistance to one of the most important pests of sunflower, Sclerotinia sclerotiorum. They also provide genes for high yield potential and other important agronomic traits such as herbicide resistance and high oleic acid. They are available to seed producers and seed companies for use in line development or hybrid breeding.
Technical Abstract: Sclerotinia head and stalk rots [caused by Sclerotinia sclerotiorum (Lib.) de Bary] are among the most devastating diseases in sunflower (Helianthus annuus L.). Breeding for resistance to these diseases is complicated by the quantitative inheritance of the resistance, for which there are few genes of major effect. Seven germplasms, RHA 461 (Reg. No.GP-337; PI 655012), RHA 462 (Reg. No.GP-338; PI 655013), RHA 463 (Reg. No. GP-339; PI 655014), RHA 468 (Reg. No. GP-341; PI 667184), HA 465 (Reg. No. GP-342; PI 670488), HA 466 (Reg. No. GP-340; PI 667183), and HA 467 (Reg. No. GP-343; PI 670489) were developed by the USDA-ARS and the North Dakota Agricultural Experiment Station, Fargo, ND, to provide useful genetic variation for Sclerotinia resistance, in a high yielding, high quality background. These germplasms also possess other important agronomic and quality traits, such as high oleic acid in the seed oil, downy mildew resistance, and tolerance to imidazolinone herbicides.