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. 1964 May 15;144(3620):849-50.
doi: 10.1126/science.144.3620.849.

Growth Response of the d-5 and an-1 Mutants of Maize to Some Kaurene Derivatives

M Katsumi, B O Phinney, P R Jefferies, C A Henrick

Growth Response of the d-5 and an-1 Mutants of Maize to Some Kaurene Derivatives

M Katsumi et al. Science. .

Abstract

(-)-Kaur-16-en-19-oic acid and (-)-kaur-16-en-19-oloxygenated derivatives of (-)-kaurene, stimulated seedlingelongation for the two nonallelic dwarf mutants of maize, d-5 and an-1. Replacement of the exocyclic methylene groupattached to ring D by a keto-, methyl-, hydroxymethyl-, carboxy-, or methylcarboxy group resulted in compounds which were biologically inactive. These kaurene derivatives are structurally related to the gibberellins which produce a similar type of elongation for the d-5 and an-1 mutants.

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