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Origin of Adventitious Roots in Coleus Cuttings

Margery C. Carlson
Botanical Gazette
Vol. 87, No. 1 (Feb., 1929), pp. 119-126
Stable URL: http://www.jstor.org/stable/2470924
Page Count: 10
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Origin of Adventitious Roots in Coleus Cuttings
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Abstract

1. Adventitious roots arising between the fibrovascular bundles from the bases of young cuttings of Coleus blumei originate in one to several adjacent cells of the pericycle. 2. The first division of the initial cells of a root is usually tangential, but it may be radial, or even oblique. 3. During the early stages of development the daughter cells divide without first increasing in size, so that a young primordium consisting of many cells may occupy the same space as the pericyclic cells from which it originated. 4. The primordium enlarges and bulges into the cortex before differentiating into the tissues of a root. 5. Subsequent development is precisely as described by the early investigators of the subject of root development.

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