Summary
When applied on the root cap of Zea mays L., indol-3yl-acetic acid (IAA) may enter the root tip and move basipetally inside the cap. From the cap to the apex (quiescent centre and meristem) the IAA transport is very slow. Polarity of IAA movement, in relation to growth, is discussed.
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References
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Pernet, J.J., Pilet, P.E. Indoleacetic acid movement in the root cap. Planta 128, 183–184 (1976). https://doi.org/10.1007/BF00390322
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DOI: https://doi.org/10.1007/BF00390322