Polarity of Indoleacetic Acid in young Coleus Stems
Author(s) -
William P. Jacobs
Publication year - 1977
Publication title -
plant physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.554
H-Index - 312
eISSN - 1532-2548
pISSN - 0032-0889
DOI - 10.1104/pp.60.1.95
Subject(s) - coleus , polarity (international relations) , botany , chemistry , auxin , biology , biochemistry , gene , cell
Young internodes of Coleus blumei Benth. have long been known for their sizable amount of acropetal indoleacetic acid movement. However, plants of the same clone, under improved growing conditions, now show almost absolute basipetal polarity of (14)C-indoleacetic acid, as measured by liquid scintillation counting of (14)C in the receiver cylinders of agar. The ratio of basipetal to acropetal movement is now as much as 85:1, instead of the 3:1 ratio found years ago under conditions providing slower growth.
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