Physiological Studies in Plant Anatomy

Priestley, J. H.; Tupper-Carey, R. M.

doi:10.1111/j.1469-8137.1922.tb07588.x

Cited by 21 publications

(8 citation statements)

References 7 publications

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“…As pointed out in a previous paper (12), one of the most striking differences between etiolated and normtd stems, is the delimitation of the stele in the shoot of the etiolated plant by a typical endodermis with Casparian strip. The endodermis may be present at the very base of the stem in the nortnal pkuit, but is absent throughout the greater part of the epicotyl.…”

Section: Endodermis and Starch Sheathmentioning

confidence: 75%

Light and Growth

Priestley¹

1926

New Phytologist

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Section: Endodermis and Starch Sheathmentioning

confidence: 75%

Light and Growth

Priestley¹

1926

New Phytologist

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“…Determinations of the average diameter and height of the water column at each contact were made at frequent intervals, depending upon the nature of the experiment. No measurements were made during the first 5 to 10 hours after the onion had been placed in the chamber, in order to permit it to come into flux equilibrium with the conditions of the environment. Favorable conditions for growth were present in the experimental chamber, for the roots and leaves of the onions grew in a normal manner.…”

Section: Apparatus and Methodsmentioning

confidence: 99%

“…Discussion The experimental evidence which has been presented heretofore regarding the absorption of water by the apical meristem is not in agreement. PRIESTLEY and TUPPER-CAREY (5) showed that the apex was relatively impermeable, HOiaN (1) that comparatively little absorption occurred, while SIERP and BREWIG (8) maintained that the first 5 mm. of the apex not only showed an absence of absorption, but that it actually gave off water.…”

Section: Effect Of Age On the Rates Of Absorption In Apical Regionsmentioning

confidence: 99%

Distribution of the Velocities of Absorption of Water in the Onion Root

Rosene

1937

Plant Physiol.

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Although many investigations have been made there is, up to the present, no available study which furnishes reliable quantitative data on the distribution of the rates of water absorption in any one root. Only recently (1, 8) has there been any attempt to make the investigations strictly quantitative in character but all studies are open to adverse criticism since none were carried out under adequately controlled conditions. It appears that the only method at present available which provides for complete control of conditions using the intact, uninjured, and unstimulated root is that used in the present study.Since reviews have been presented by other investigators (1,4,8,9) no comprehensive survey of the literature will be attempted. It is important, however, to call attention to certain inadequacies of the methods employed by the more recent investigators. POPESCO (4) made determinations of the rates of water absorption on single roots of a number of different plants, but his results were only relatively quantitative. He employed both direct and indirect methods which involved: (1) the isolation of given regions of a root by covering these with cocoa-butter and then placing the root in a U-tube, one arm of which, drawn out to a capillary, was graduated in arbitrary units; (2) the use of dyes and microchemical reagents; and (3) plasmolysis. HOHN (1) made unsuccessful attempts to use a modified form of PoPEsco's "cocoa-butter" procedure. He was unable to obtain a perfect seal with rings of cocoa-butter and he points out the impossibility of employing inelastic material to cover the region of elongation. To cover various regions of the root HOHnN substituted oil for cocoa-butter. His experiments were carefully carried out under known conditions of temperature and humidity. The chief criticism of his work is given by SIERP and 1 www.plantphysiol.org on May 9, 2018 -Published by Downloaded from

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“…A very considerable amount of work has already been done along these lines by Professor Priestley and his collaborators, on the differentiation of endodermis, cork, cuticle and conducting-tissiies ( (120,121,122,123); see also (124,125,126,127,128,157)); by Petersen (115) and by Kostytschew(97) on the differentiation of vascular bundles in the individual; by Professor Thoday on the comparative structure of sunflower stems of different ages and sizes (167); by Professor Holden and his assistants on abnormal seedhngs ((78); see also (79,83, Work along these lines-and there is still much waiting to be done-will lead to a better understanding of the real causes and determining factors in the development of forms and structures, which, from the purely morphological standpoint, are already familiar,…”

Section: Suggestions Concerning Future Investigations On the Primmentioning

confidence: 99%

The Arborescent Habit in Angiosperms

Bancroft¹

1930

New Phytologist

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Physiological Studies in Plant Anatomy

Cited by 21 publications

References 7 publications

Light and Growth

Light and Growth

Distribution of the Velocities of Absorption of Water in the Onion Root

The Arborescent Habit in Angiosperms

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