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The relationship between diffusible, extractable and conjugated (base-labile) forms of indole-3-acetic acid in isolated coleoptile tips of Zea mays L. 1984

E W Weiler, and S Wischnewski
Lehrstuhl für Pflanzenphysiologie, Ruhr-Universität, Postfach 102148, D-4630, Bochum, Germany.

Isolated, 2.5-mm-long coleoptile tips of Zea mays L. cv. Anjou 210 were analyzed for diffusible and tissue-extractable indole-3-acetic acid (IAA) in comparison with the level of base-labile conjugates at various times after excision. The results indicate that base-labile conjugates of IAA do not serve as major sources of free IAA in maize coleoptile tips.

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