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Published in Crop Sci 6:41-42 (1966)
© 1966 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Factors Affecting Oil Content and Oil Composition of Corn (Zea mays L.) Grain1

M. D. Jellum and J. E. Marion2

Nine corn hybrids were grown at 5 locations in 1962 and at 6 locations in 1963 to study the factors which may influence the oil content and quality of the corn kernel. Three dates of planting were used at one location in each year. First and second ears were harvested separately and analyzed for oil content by nuclear magnetic resonance and for fatty acid composition of the oil by gas-liquid chromatography. Oil content and quality were not greatly affected by different dates of planting. Ear position had no effect on palmitic, stearic, and linolenic acids. Although not always significant, the oil from the first ear was always higher in oleic acid and lower in linoleic acid than the second ear. The seeoml ear was lower than the first ear in oil content in 1963 but not in 1962. Year, location, and hybrid effects were highly significant for all characters. First and second order interactions were generally nonsignificant. Hybrids had a greater influence on the characters studied than any of the environmental factors.

1 Journal Series Paper No. 517, Georgia Experiment Station, Experiment, Ga. Corn samples were analyzed for total oil content by the Clinton Corn Processing Company, Clinton, Iowa, through a grant from the Corn Industries Research Foundation. The Authors wish to acknowledge the advice and assistance of Dr. J. L. Carmon, Statistician, Department of Experimental Statistics, University of Georgia, Athens. Mr. C. D. Fisher assisted in the planting and harvesting of the corn at the Georgia Mountain Experiment Station, Blairsville.

2 Assistant Agronomist and Assistant Food Technologist, Georgia Experiment Station.




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