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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 #175137
Title: INFLUENCE OF THE RESTORER PARENT ON OLEIC ACID LEVELS OF NUSUN SUNFLOWER HYBRIDS

Author
item Miller, Jerry
item Vick, Brady

Submitted to: Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 8/1/2004
Publication Date: 10/31/2004
Citation: Miller, J.F., Vick, B.A. 2004. Influence of the restorer parent on oleic acid levels of nusun sunflower hybrids. Agronomy Abstracts [CD-ROM]. 2004 ASA-CSSA-SSSA International Annual Meetings, October 31-November 4, 2004, Seattle, WA.

Interpretive Summary:

Technical Abstract: Previous studies have investigated the influence of the major dominant gene, Ol, and the recessive modifier gene, ml, on high-oleic acid levels of sunflower oil. However, little is known regarding the influence of the modifier gene from the male or restorer parent on mid-oleic levels of NuSun(R) sunflower oil. Acceptable NuSun(R) oil produced by hybrids must have oleic acid content between 55% and 70%. The objective of this investigation was to cross one cytoplasmic male-sterile high-oleic female line, CMS HA 434, with different low-oleic acid restorer lines having diverse backgrounds. Four commercial hybrid checks were used for comparison. The highest oleic concentration (62.2%) was derived from crosses between CMS HA 434 and the restorer RHA 377. The lowest oleic concentration (39.3%) was derived from a cross between CMS HA 434 and RHA 415, a restorer line selected for high linoleic acid content. This hybrid would be unacceptable for the industry. The difference between hybrids produced by these diverse restorer lines indicates that different modifier genes exist and multiple numbers of modifier genes are present in some lines. The presence or absence of these modifier genes appears to be important in producing acceptable NuSun(R) sunflower hybrids. Sunflower breeders need to be aware of these different modifier genes in their restorer lines in order to develop successful, acceptable NuSun® sunflower hybrids.