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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

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Hertle points out that once a mosaic cell in a graft callus starts to produce roots, shoots and flowers, it could give rise to a new species or subspecies, especially if cell walls open wide enough to admit nuclear genomes.
This callus may form upon any cut surface, or even where the bark has been abraded.
AMERICAN POMOLOGYJ. A. WARDER
You can get the callus almost every time, but it is very difficult to secure the development of roots afterwards.
President Morris: How about getting callus by three months, we will say, in storage?
On January 11 the cambium ring at the lower end of the cuttings had begun to callus.
The butternut and black walnut hardly showed any callus at all after keeping the sphagnum wet as long as my men would do it.
I don't think there was a callus on the hickory in less than thirty days.
In most cases either a pure nightshade or a pure tomato grew out from this callus.
Grafted walnuts show callus growth from the cambium, and also from the pith of stems and the endodermis of the root.
This may have been too high, as on raising the cuttings it was found the callus had rotted.

WORDS RELATED TO CALLUS

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

WORD OF THE DAY

pulchritudinousadjective | [puhl-kri-tood-n-uhs, -tyood- ]SEE DEFINITION