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The Dependence of Auxin-Induced Pea Stem Growth on Gibberellin
Vol. 131, No. 1 (Mar., 1970), pp. 95-97
Published by: The University of Chicago Press
Stable URL: http://www.jstor.org/stable/2473833
Page Count: 3
You can always find the topics here!Topics: Peas, Gibberellins, Plants, Insulin antibodies, Plant growth, Seedlings, Internodes, Stem elongation, Biosynthesis, Cell growth
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Administration of indole-3-acetic acid (IAA) to stem sections excised from gibberellic acid (GA3) -pre-treated dwarf peas produces a comparatively large growth response, indistinguishable from similarly treated tall pea sections. If tall peas are treated with the growth retardant (2-chloroethyl) trimethylammonium chloride, growth is stunted. Auxin-induced elongation of stem sections is also markedly reduced and identical to that of IAA-treated dwarf sections. With GA3 and IAA, growth is synergistically restored and identical to that induced by IAA alone in tall sections. The results are interpreted to indicate that auxin-induced growth depends on gibberellin.
Botanical Gazette © 1970 The University of Chicago Press