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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 #122806
Title: REGISTRATION OF FOUR MID-RANGE OLEIC ACID SUNFLOWER GENETIC STOCKS

Author
item Miller, Jerry
item Vick, Brady

Submitted to: Crop Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 10/31/2001
Publication Date: N/A
Citation: N/A

Interpretive Summary: Four sunflower maintainer (female) genetic stocks were developed and released by the USDA-ARS, Fargo, ND, and the North Dakota Agricultural Experiment Station, Fargo, ND. These genetic stocks ranged from 63.7 to 67.0% in oleic acid concentration and possess genes which limit oleic acid to the mid-range level. This mid-range level has been called NuSun by the sunflower industry and is being promoted nation-wide by this name. These genetic stocks can be utilized by researchers of the sunflower industry or public institutions to create NuSun sunflower hybrids for utilization by the frying food industry of the United States. Hybrids produced by crossing the four maintainer lines with the two restorer lines, RHA 409 and RHA 274 (LP-1) produced NuSun hybrids with a range of 69.6 to 51.0% oleic acid. This research indicates that the restorer lines used by industry may have different modifier genes which interact with the oleic genes of these genetic stocks. Hybrids will have to be tested to determine the proper utilization of these lines by the NuSun industry.

Technical Abstract: Four sunflower (Helianthus annuus L.) maintainer (female) genetic stocks were developed and released by the USDA-ARS, Fargo, ND, and the North Dakota Agricultural Experiment Station, Fargo, ND. These genetic stocks ranged from 63.7 to 67.0% in oleic acid concentration and possess genes which limit oleic acid to the mid-range level. These genetic stocks can be utilized by researchers of the sunflower industry or public institutions to create NuSun sunflower hybrids for utilization by the frying food industry of the United States. Hybrids produced by crossing the HA 421 with two restorer lines, RHA 409 and RHA 274 (LP-1) produced NuSun hybrids with 63.7 and 69.6% oleic acid. Hybrids produced by crossing HA 422, HA 423, and HA 424 with the two restorer lines produced NuSun hybrids with 56.4 and 65.5%, 51.0 and 62.8%, and 54.2 and 64.9% oleic acid concentrations, respectively. It appears that RHA 409 and RHA 274 (LP-1) possess different modifier genes affecting oleic acid composition, or differ in their interaction with the genetic factors influencing the oleic level in HA 421 to HA 424. This research indicates that the restorer lines used by industry may have different modifier genes which interact with the oleic genes of these genetic stocks. Hybrids will have to be tested to determine the proper utilization of these lines by the NuSun industry.