Crop Science Journal of Natural Resources and Life Sciences Education
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Published in Crop Sci 6:31-33 (1966)
© 1966 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Seedling and Biochemical Differences Within a Long-Time Maize (Zea mays L.) Inbred1

A. A. El-Eryani and A. A. Fleming2

Significant differences in seedling agronomic and quantitative biochemical characters (total carbohydrates) were obtained between four stocks of the same long-time inbred line of maize.

Apparently, 3 different biotypes have evolved in the 4 stocks of the inbred Cl 7. The stocks from North Carolina and Arkansas have diverged widely from each other as well as from the Athens and Beltsville stocks. Athens and Beltsville stocks have remained similar to each other. In general, the stocks which had agronomic differences in a previous study also had seedling agronomic and biochemical differences in this study.

Hereditary variations reported herein may be attributed to relic heterozygosity, mutation, or a combination of the two. These causes and the significance of the variations are discussed in a previous paper (2).

Studies in the determination of heterogeneity between stocks of the same inbred line are not limited to field experiments. Results of this experiment show that seedling characters in the greenhouse and quantitative biochemical analysis in the laboratory may be used successfully in differentiating stocks within a long-time inbred line. Furthermore, this information should be of value in relating biochemical studies to both applied and basic genetical research.

1 1 Contribution from the Department of Plant Pathology and Plant Genetics, College Experiment Station, University of Georgia, College of Agriculture Experiment Stations, Athens. Published with the approval of the Director as Journal Paper No. 444. Part of a thesis submitted in partial fulfillment of the requirements for the M.S. degree, 1964. Presented at the annual meeting of the Crop Science Society of America in Kansas City, Missouri, November 1964.

2 Graduate Assistant (now at Yale University) and Professor of Plant Breeding. The writers gratefully acknowledge the help of J. H. Owen, G. M. Kozelnicky, L. S. Dure III, M. K. Hamdy, S. J. Rowan, and R. A. McCreery.

Received for publication July 2, 1965.




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Environmental Quality		 The Plant Genome
Copyright © 1966 by the Crop Science Society of America.