Abstract
THERE is probably fairly general agreement to-day that new leaves arise in the first available space, be this space determined by the inhibitional fields of adjacent primordia1 or according to a more generalized theory of geometrical packing2. The apex possesses no intrinsic spiral properties; but as the Snows2,3 and others have shown, the phyllotaxis depends on circumstances and can be altered, or the genetic spiral reversed, by various experimental treatments.
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References
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MILLENER, L. An Experimental Demonstration of the Dependence of Phyllotaxis on Rate of Growth. Nature 169, 1052–1053 (1952). https://doi.org/10.1038/1691052a0
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DOI: https://doi.org/10.1038/1691052a0
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