Crop Science Journal of Natural Resources and Life Sciences Education
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Published in Crop Sci 9:265-267 (1969)
© 1969 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Relationship of Certain Stalk Characters with Grain Yield in Corn (Zea mays L.)1

T. P. Singh2, M. S. Zuber3 and G. F. Krause4

Previous studies have shown stalk quality in corn, Zea mays L., as measured by rind thickness and crushing strength, is highly correlated with field stalk lodging. Some corn researchers question if increasing rind thickness, weight of a 5.1-cm section and crushing strength through breeding and selection might have an effect on grain yield. This study, employing the S0 and S1 progenies from the F2 and first and second backcross generation of two inbred lines, showed little, if any, genetic correlation between three stalk-traits and yield. Since our study was limited to only two inbred parents additional studies should be conducted with larger randomly-sampled populations tested over several environments to confirm whether a relationship exists. However, our results suggest to us that we would have little difficulty in developing high yielding lines with good stalk quality from the progenies of the two inbred parents, ‘Mo22’ and ‘Mo940.’

Key Words: Rind thickness • Stalk section weight • Stalk crushing strength

1 Cooperative Investigation between the Department of Field Crops, University of Missouri, Columbia 65201, and Crops Research Division, Agricultural Research Service, U.S. Department of Agriculture. Missouri Agricultural Experiment Station Journal Series Number 5090.

2 Formerly graduate assistant, Department of Field Crops, currently Department of Plant Breeding, Punjab Agricultural University, Ludhiana (Punjab) India.

3 Research Agronomist, Crops Research Division, ARS, USDA, and Professor of Field Crops, University of Missouri.

4 Agricultural Experiment Station Statistician and Associate Professor of Statistics, University of Missouri.

Received for publication October 21, 1968.




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Copyright © 1969 by the Crop Science Society of America.