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ARS Home » Plains Area » Fargo, North Dakota » Edward T. Schafer Agricultural Research Center » Sunflower and Plant Biology Research » Research » Publications at this Location » Publication #93264
Title: REGISTRATION OF SUNFLOWER SCLEROTINIA TOLERANT GERMPLASM LINES

Author
item Miller, Jerry
item Gulya Jr, Thomas

Submitted to: Crop Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 5/14/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary: Eight sunflower germplasm lines with Sclerotinia tolerance were developed cooperatively by USDA-ARS and the North Dakota Agricultural Experiment Station. Three of the germplasm lines, HA 390, RHA 391, and RHA 392 were derived directly from germplasm obtained from Russia and Romania through the Food and Agricultural Organization (FAO). The restorer lines, RHA 408, RHA 409, and the maintainer lines, HA 410, HA 411 and HA 412, were derived from crosses and populations screened for Sclerotinia tolerance. Hybrids created by crossing these lines together lowered Sclerotinia stalk rot infection to 11% as compared with a mean of 43% for check hybrids. The hybrids also had acceptable oil content and yield potential. These germplasm lines should provide diversity for Sclerotinia tolerance as well as yield and agronomic characteristics and are available for use by the sunflower industry and public researchers.

Technical Abstract: Eight sunflower (Helianthus annuus L) germplasm lines with Sclerotinia stalk rot (Sclerotinia sclerotiorum) tolerance were developed cooperatively by USDA-ARS and the North Dakota Agricultural Experiment Station. HA 390, RHA 391, and RHA 392 were derived directly through selection of germplasm obtained from Russia (Armavirskij 50 and Start) and Romania (Select) through the Food and Agricultural Organization (FAO). The restorer lines, RHA 408 and RHA 409, and the maintainer lines, HA 410, HA 411, and HA 412, were derived from crosses and populations screened for Sclerotinia tolerance. Hybrids created by crossing these lines together lowered Sclerotinia stalk rot infection to 11% as compared with a mean of 43% for check hybrids. The hybrids also had acceptable oil content and yield potential. These germplasm lines should provide diversity for Sclerotinia tolerance as well as yield and agronomic characteristics and are available for use by the sunflower industry and public researchers.