Inhibition of Growth of Excised Tomato Roots by 2-Diethylaminoethanol

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Science  06 Feb 1959:
Vol. 129, Issue 3345, pp. 330-331
DOI: 10.1126/science.129.3345.330


Approximately 40 µM 2-diethylaminoethanol (DEAE) caused 50-percent inhibition of growth of the main axis. Inhibition was relieved by 2-dimethylaminoethanol and choline but not by ethanolamine. A marked morphogenetic effect of DEAE is attributed to differences in sensitivity of main and lateral meristems and to an effect upon the postulated hormonal system controlling apical dominance.