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United States Department of Agriculture

Agricultural Research Service

Research Project: CONSERVATION, CHARACTERIZATION, AND EVALUATION OF CROP GENETIC RESOURCES AND ASSOCIATED INFORMATION

Location: Plant Genetic Resources Conservation Unit

Title: Assessment of oil content and fatty acid composition variability in the U.S. peanut minicore

Authors
item WANG, MING
item Chen, Charles
item Davis, Jerry -
item Stalker, Tom -
item Pittman, Roy
item HOLBROOK, C
item PEDERSON, GARY

Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: April 27, 2010
Publication Date: November 3, 2010
Citation: Wang, M.L., Chen, C.Y., Davis, J., Stalker, T., Pittman, R.N., Holbrook Jr, C.C., Pederson, G.A. 2010. Assessment of oil content and fatty acid composition variability in the U.S. peanut minicore. ASA-CSSA-SSSA Annual Meeting Abstracts. 295:5.

Interpretive Summary: The established U.S. peanut minicore (core of core) encompassing 112 accessions are useful resources for peanut breeders, geneticists, and curators. Oil content and fatty acid composition are important seed quality traits which can significantly affect the peanut price, nutrition value and down-stream processing. Within the U.S. minicore, 108 available accessions were planted in Headland, Alabama for two years. The collected seeds were used for oil content measurement and fatty acid analysis. A significant variation on oil content (43.2% - 55.9%) was detected among accessions. A considerable variation on fatty acid composition was also detected and the ratio of oleic acid and linoleic acid (O/L) ranged from 0.93 to 3.58. These accessions did not contain high extremes (for example, accessions containing 60% oil content or accessions containing 80% oleic acid). In addition to oil content and fatty acid composition, resveratrol and flavonoid contents were also analyzed. The results obtained from this study will be useful for peanut breeding programs as well as further expanding the U.S. peanut minicore.

Technical Abstract: The established U.S. peanut minicore encompassing 112 accessions is useful resources for peanut breeders, geneticists, and curators. Oil content and fatty acid composition are important seed quality traits which can significantly affect the peanut price, nutrition value and down-stream processing. Within the U.S. minicore, 108 available accessions were planted in Headland, Alabama for two years. The collected seeds were used for oil content measurement and fatty acid analysis. A significant variation on oil content (43.2% - 55.9%) was detected among accessions. A considerable variation on fatty acid composition was also detected and the ratio of oleic acid and linoleic acid (O/L) ranged from 0.93 to 3.58. The accessions in the U.S. minicore did not contain high extremes neither accessions with 60% oil content or 80% oleic acid. In addition to oil content and fatty acid composition, resveratrol and flavonoid contents were also analyzed. The results obtained from this study will be useful for peanut breeding programs on selection of accessions as breeding materials as well as further expanding the U.S. peanut minicore.

Last Modified: 9/10/2014
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