Abstract
THE recent publication of Hudson1 recording an annual fluctuation of regenerating capacity in raspberry root-cuttings is paralleled by a number of observations on root-cuttings of horse-radish (Armoracia rusticana) made incidentally in this Department in the course of other work. These observations indicate that under constant conditions horse-radish cuttings show a seasonal variation in regenerating capacity, expressed as the mean number of primordia formed per root-scar in 10–14 days (Fig. 1). The results shown are at present incomplete, but it is hoped to extend them in the future. The point of particular interest, however, is that the regenerating capacity is low during the months of flowering (in Armoracia, during May and June); and an inspection of Hudson's graph shows that the same relationship holds for the raspberry (flowering June to August).
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References
Hudson, J. P., Nature, 172, 412 (1953).
Graham, R. J. D., Sci. Hort., 4, 97 (1936).
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DORE, J. Seasonal Variation in the Regeneration of Root-Cuttings. Nature 172, 1189 (1953). https://doi.org/10.1038/1721189a0
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DOI: https://doi.org/10.1038/1721189a0
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