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The partitioning of resistances to gaseous diffusion in the leaf epidermis and the boundary layer
Year:
1968
Source of publication :
Annals of Botany
Authors :
Moreshet, Samuel
;
.
Stanhill, Gerald
;
.
Volume :
32
Co-Authors:

Moreshet, S., The Volcani Institute of Agricultural Research, Rehovot, Israel.
Koller, D., The Hebrew University, Jerusalem, Israel.
Stanhill, G., The Volcani Institute of Agricultural Research, Rehovot, Israel.

Facilitators :
From page:
695
To page:
701
(
Total pages:
7
)
Abstract:
The partitioning of total leaf resistance to gaseous diffusion into the cuticular, stomatal, and boundary-layer components of the upper and lower leaf surfaces was studied. A general formula was developed, which showed that the mean stomatal or even mean epidermal resistances may not be obtained by simple subtraction of the boundary-layer component from the total, except in very specific cases. The formula was used to study the relationship between the mean stomatal resistance, r¯s, and the residual leaf resistance, rl (obtained by subtracting the boundary-layer from the total resistance), in leaves differing in their degree of anisolaterality (with respect to stomatal resistance), cuticular resistance, and total resistance, as affected by the relative magnitude of the boundary-layer component. Graphical presentation of the analyses permits evaluation of the difference between r¯s, and rl in a wide variety of cases. It was shown experimentally that when the stomatal component of each leaf surface is known, the total resistance calculated from these values according to the formula closely matches the measured value. © 1968 OXFORD UNIVERSITY PRESS.
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DOI :
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
31499
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:03
Scientific Publication
The partitioning of resistances to gaseous diffusion in the leaf epidermis and the boundary layer
32

Moreshet, S., The Volcani Institute of Agricultural Research, Rehovot, Israel.
Koller, D., The Hebrew University, Jerusalem, Israel.
Stanhill, G., The Volcani Institute of Agricultural Research, Rehovot, Israel.

The partitioning of resistances to gaseous diffusion in the leaf epidermis and the boundary layer
The partitioning of total leaf resistance to gaseous diffusion into the cuticular, stomatal, and boundary-layer components of the upper and lower leaf surfaces was studied. A general formula was developed, which showed that the mean stomatal or even mean epidermal resistances may not be obtained by simple subtraction of the boundary-layer component from the total, except in very specific cases. The formula was used to study the relationship between the mean stomatal resistance, r¯s, and the residual leaf resistance, rl (obtained by subtracting the boundary-layer from the total resistance), in leaves differing in their degree of anisolaterality (with respect to stomatal resistance), cuticular resistance, and total resistance, as affected by the relative magnitude of the boundary-layer component. Graphical presentation of the analyses permits evaluation of the difference between r¯s, and rl in a wide variety of cases. It was shown experimentally that when the stomatal component of each leaf surface is known, the total resistance calculated from these values according to the formula closely matches the measured value. © 1968 OXFORD UNIVERSITY PRESS.
Scientific Publication
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