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Published online 1 January 1965
Published in Agron J 57:56-58 (1965)
© 1965 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Influence of Oxygen and Carbon Dioxide on Germination and Seedling Development of Corn (Zea mays L.)1

Paul W. Unger and Robert E. Danielson2

Synopsis: Corn seeds were germinated and the seedlings permitted to develop on wet filter paper in sealed containers at various pressures of oxygen or mixtures of oxygen and carbon dioxide. The seeds germinated over a wide range of oxygen pressures, but further radicle elongation was inhibited by 0.0- and 150.0-cm. Hg oxygen pressure. Maximum radicle growth occurred at 20.0 cm. pressure. Sharp reductions in growth were noted for oxygen pressures less than 20.0 cm. Radicle growth in mixtures of oxygen and carbon dioxide was significantly greater than growth in oxygen alone.

1 Contribution from the Department of Agronomy, Colorado Agr. Exp. Sta., Fort Collins. This work was supported in part by the Western Regional Research Project, W-67, and is part of a thesis submitted by the senior author in partial fulfillment of the requirements for the M.S. degree. Published with the approval of the Director of the Colorado Agr. Exp. Sta. as Scientific Series Paper No. 951. Presented at the Annual Meeting, American Society of Agronomy, Denver, Colo., November, 1963.

2 NDEA Graduate Fellow and Professor of Agronomy (Soils), Colorado State University.

Received for publication June 1, 1964.




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Copyright © 1965 by the American Society of Agronomy.