Abstract
VAN STEVENINCK1, in a recent communication describing abscission-accelerators from lupins, has suggested a similarity of one of these substances to the abscission-accelerating factor discovered in senescent leaves2, and attributes to me the statement that the latter substance is not a sugar, amino-acid, purine or pyrimidine. In fact, in the paper in question3 it is stated that the abscission-accelerator in senescent leaves was “so far unidentified chemically, but does not appear to be any of the more common sugars, amino-acids, purines or pyrimidines”.
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References
Van Steveninck, R. F. M., Nature, 183, 1246 (1959).
Osborne, D. J., Nature, 176, 1161 (1955).
Osborne, D. J., Trop. Agric., 35, 145 (1958).
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OSBORNE, D. Identity of the Abscission-accelerating Substance in Senescent Leaves. Nature 183, 1593 (1959). https://doi.org/10.1038/1831593a0
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DOI: https://doi.org/10.1038/1831593a0
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