Crop Science Journal of Natural Resources and Life Sciences Education
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Published in Crop Sci 24:629-632 (1984)
© 1984 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Oil Composition in Parental, F1, and F2 Populations of Two Oat Crosses1

R. S. Karow and R. A. Forsberg2

The goal of this study was to determine the feasibility of maintaining or increasing the oil content of oats (Avena sativa L.) while decreasing polyunsaturated fatty acid concentration. The F1 and F2 populations from crosses between dissimilar parents were analyzed for groat oil percentage and for fatty acid composition. Inheritance patterns for linolenic acid suggested additive genetic control while oleic and linoleic acids were each controlled, in part, by a partially dominant gene or genes. Both additive and dominance gene action were observed for oil concentration. Cytoplasmic influence on fatty acid composition was not evident in reciprocal F1 populations but was suggested by F2 population analysis. Heritability estimates for the various fatty acids ranged from 49.3 to 79.8%. Oleic acid percentage was positively correlated with oil concentration while linoleic and linolenic acid correlations with oil level were negative. The breeding objective of lowering polyunsaturate concentration as a percentage of oil may be readily attained; however, if concentration as a percentage of grain is used, success seems less likely.

Key Words: Oil extraction • Oil inheritance • Grain quality • Fatty acids • Heritability

1 Research supported by the College of Agric. and Life Sci. and the USDA Oat Quality Lab., Univ. of Wisconsin, Madison, WI 53706. Submitted in partial fulfillment of the requirement for the M.S. degree of R.S. Karow.

2 Former graduate research assistant, presently assistant professor, Crop Sci. Dep., Oregon State Univ., Corvallis, OR 97331; professor, Dep. of Agronomy, Univ. of Wis., Madison, WI 53706.

Received for publication May 2, 1983.




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Copyright © 1984 by the Crop Science Society of America.