Abstract:Wheat seeds (Triticum aestivum L. cvs. Yorkstar and Sirius) were cut transversely into embryoless and embryo‐containing (embryonated) halves and the content of endogenous cytokinins and gibberellins in both halves determined before and after the seeds imbibed water for 12–15 h at 22°C in the light. Dry seeds contained little ethyl acetate‐extractable gibberellin activity as measured by bioassay but n‐butanol‐soluble cytokinins were detected mainly in the embryoless halves. Dry, embryonated half‐seeds contained… Show more
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