Abstract
Wittwer and Bukovac1 and Lockhart and Deal2 have recently shown that gibberellin A4, though less active than gibberellin A1 or gibberellic acid in most bioassay systems1,3,4, is far more active than A4 or gibberellic acid in promoting the growth of cucumber stems. We have found that two recently discovered gibberellins, A7 and A9, both produced by Gibberella fujikuroi5,6 also show specifically high activity in promotion of cucumber hypocotyl growth.
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References
Wittwer, S. H., and Bukovac, M. J., Proc. Fourth Internat. Conf. on Plant Growth Regulation (Iowa State Press, Ames ; in the press).
Lockhart, J. A., and Deal, P. H., Naturwiss., 47, 141 (1960).
Bukovac, M. J., and Wittwer, S. H., Nature, 181, 1484 (1958).
Sumiki, Y., Proc. Fourth Internat. Conf. on Plant Growth Regulation (Iowa State Press, Ames ; in the press).
Cross, B. E., Galt, R. H. B., and Hanson, J. R., Tetrahedron Letters, No. 15, 18 (1960).
Cross, B. E., Galt, R. H. B., and Hanson, J. R., Tetrahedron Letters (in the press).
Hashimoto, T., and Yamaki, T., Bot. Mag., Tokyo, 73, 69 (1960).
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BRIAN, P., HEMMING, H. Promotion of Cucumber Hypocotyl Growth by Two New Gibberellins. Nature 189, 74 (1961). https://doi.org/10.1038/189074a0
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DOI: https://doi.org/10.1038/189074a0
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