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Carnegie Institution of Washington Publication Volume 50 (Paperback) Loot Price: R238
Discovery Miles 2 380
Carnegie Institution of Washington Publication Volume 50 (Paperback): Carnegie Institution of Washington
Carnegie Institution of Washington Publication Volume 50 (Paperback): Carnegie Institution of Washington

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Carnegie Institution of Washington Publication Volume 50 (Paperback)

Carnegie Institution of Washington

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Loot Price R238 Discovery Miles 2 380

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 Excerpt: ...the plumule occurs. This transverse enlargement is accompanied by marked hardening of the tissues and by the formation of a true bark. In the meantime the primary root grows directly downward without branching, probably attaining a length in the open soil of many decimeters. In the seedlings grown in pots the roots extended around the base of the pot and finally branched profusely in their distal portions. Not until the root has obtained a remarkable length and the hypocotyl has become enormously thickened and very woody, does elongation of this organ begin again. The plumule, which has been dormant up to this time, then begins slowly to elongate, the first true leaves being produced as much as a full month after the first appearance of the cotyledons. Several cultivated plants of the more humid regions, such as squash, beans, etc., were also grown from the seed and used for purposes of comparison. Growth of all these forms, excepting the aerial portions of Fouquieria, was exceedingly rapid at this season of the year. The Boerhavia and Tribulus plants were in full bloom within four or five weeks after their cotyledons appeared. This, it is to be remembered, was during the hottest season. The high temperatures which prevailed seemed to have no deleterious effect upon any of the native plants, nor upon the cultivated plants experimented with, so long as an ample supply of water was provided for the roots, thus allowing the excessively high transpiration to be kept up. WATER REQUIREMENT FOR GERMINATION. Seeds of Fouquieria splendens were planted in Stender dishes containing soil of several different water contents and note made of their germination. In soils containing 5 and 10 per cent of water by volume the seeds failed to germinate. In the latter soil the w...

General

Imprint: Rarebooksclub.com
Country of origin: United States
Release date: May 2012
First published: May 2012
Authors: Carnegie Institution of Washington
Dimensions: 246 x 189 x 2mm (L x W x T)
Format: Paperback - Trade
Pages: 30
ISBN-13: 978-1-153-31776-4
Barcode: 9781153317764
Categories: Books
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LSN: 1-153-31776-1

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