Abstract
A RECENT paper by Dr. Edith Smith upon the vegetative propagation of Clematis (Trans. Roy. Soc. Edinburgh, 55, Part 3, 643-664; 1928) again directs attention to the question of the etiolation of shoots used for cuttings. Dr. Smith finds it necessary to modify an earlier statement to the effect that clematis cuttings do not root at the node under ordinary conditions, as in fact many commercial houses still employ nodal cuttings with this plant. Normally, however, cuttings made an inch below a node root more readily. It was found, though, that after previous etiolation the stem rooted readily at the node. In an earlier paper from the Edinburgh Botanic Garden, Reed has described the ready rooting of cuttings of camphor after previous etiolation (Trans, and Proc. Bot. Soc. Edin., 28, 184 188; 1922–23). Knight and Witt have also rooted shoots of apple and plum more successfully after previous etiolation, and pointed out that in the etiolated shoots the roots did not emerge through the callus as in the normal case, but arose higher up the cutting and emerged through the cortex (Journal of Pomology, 6, 47-60; 1927).
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The Etiolation of Shoots for Cuttings. Nature 121, 1002 (1928). https://doi.org/10.1038/1211002a0
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DOI: https://doi.org/10.1038/1211002a0