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Plant Physiology 43:2049-2053 (1968)
© 1968 American Society of Plant Biologists

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Gibberellin-like Substances From Vegetative Tissue of a Conifer, Arizona Cypress 1

M. Ruddat

R. P. Pharis, H. Aoki2 and A. Crozier

Department of Biology, University of Chicago, Chicago, Illinois 60637, Department of Biology, University of Calgary, Calgary, Alberta, Canada

Vegetative shoots of Arizona cypress (Cupressus arizonica Greene) were found to contain an estimated 40 to 70 µg of gibberellin-like activity per kg. Based on elution patterns of silicic acid and celite partition columns, mobilities on thin layer chromatograms and specificity of the cucumber, d-3 dwarf maize, dwarf pea, and barley half seed bioassays it was possible to determine that the tissue contained at least 5 acidic, ethyl acetate-soluble gibberellin-like substances. The major one would appear to be GA3. In addition, GA9, GA4, and/or GA7-like compounds, and 2 unidentified gibberellin-like substances are present.

2 Present address: Department of Agricultural Chemistry, University of Nagoya, Nagoya, Japan.

1 This work supported by National Science Foundation Grant No. GB-7055 to M. Ruddat, and National Research Council of Canada Grant No. A-2585 to R. P. Pharis.






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Copyright © 1968 by the American Society of Plant Biologists