Floral Induction and the Stimulation of Cell Division in Xanthium

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Science  05 Apr 1963:
Vol. 140, Issue 3562, pp. 54-56
DOI: 10.1126/science.140.3562.54


The mitotic index in the apical region of the stem of Xanthium seedlings doubled within the 24 hours immediately following a single inductive dark period and an increase occurred within 16 hours in one case. The significance of this finding in relation to the onset of reproductive development is discussed.