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ARS Home » Southeast Area » Raleigh, North Carolina » Soybean and Nitrogen Fixation Research » Research » Publications at this Location » Publication #222989
Title: Increasing the Oleic Acid in Soybean Oil with Plant Breeding

Author
item BURTON, JOSEPH
item GILSINGER, JESSE - MONSANTO

Submitted to: American Oil Chemists' Society Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 3/15/2008
Publication Date: 5/18/2008
Citation: Burton, J.W., Gilsinger, J. 2008. Increasing the Oleic Acid in Soybean Oil with Plant Breeding. American Oil Chemists' Society Meeting.

Interpretive Summary:

Technical Abstract: Increasing the oleic acid content along with decrease in linolenic acid can improve the oxidative stability of soybean oil. Genetic changes in soybean using standard plant breeding practices has resulted in a publicly released a mid-oleic breeding line, N98-4445A, with oil that averages 57% oleic acid and 2.5% linolenic acid. Reciprocal effects for heritability and stability were examined in twelve F2 derived populations over two years developed from reciprocal crosses between N98-4445A and Arksoy, Dare, Haberlandt, Midwest, Ogden, and Peking. Significant differences in heritability and stability between reciprocal populations were observed, suggesting it may be advantageous to make reciprocal crosses when developing populations for altered fatty acid selection in soybeans. When used in a soybean breeding program to develop varieties with increased oleic acid, molecular markers are being used to make the selection of the high oleic types more efficient. Plants were also genotyped with SSR markers. An increase in oleic acid was correlated with a decrease in yield and seed quality. Significant marker-trait associations for oleic acid content, seed quality, and yield were observed in both populations. These results demonstrate that these markers could be useful for marker-assisted selection for the mid-oleic trait across populations and could be used to improve seed quality and yield. Results will also be presented which show the effect that environment can have on the stability of the mid-oleic trait.