Abstract
The length of the maize root cap differs significantly from one root to another. The gravireaction of roots appears to depend upon the cap length; when it is smallest, the downward curvature is lowest. Using a freezing technique, it was possible to destroy a part of the root cap and to observe that the smaller the number of root cap cells which remained, the less pronounced was the gravitropic response.
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References
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Pilet, PE. Importance of the cap cells in maize root gravireaction. Planta 156, 95–96 (1982). https://doi.org/10.1007/BF00393449
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DOI: https://doi.org/10.1007/BF00393449