The Chemical Induction of Parthenocarpy in the Calimyrna Fig and its Physiological Significance

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Abstract
Since parthenocarpic Calimyrna figs similar in gross morphology were produced by the application of either an auxin, a gibberellin, or a kinin, it was demonstrated indirectly that each of these endogenous hormones, should they be required for fruit growth, can be supplied by some part of the plant other than the seeds. It is proposed that fruit growth is not controlled by the hormones emanating from the seeds but, on the contrary, by their capacity to attract metabolites from other regions of the plant with the fruit tissues surrounding the seeds tapping the metabolite supply and acting as storage organs. The herbicide Tordon (4-amino-3, 5, 6-trichloropicolinic acid) appears to offer promise for commercially producing parthenocarpic Calimyrna figs of acceptable quality.