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פותח על ידי קלירמאש פתרונות בע"מ -
The effect of soil water and aeration on seed germination
Year:
1971
Source of publication :
Journal of Experimental Botany
Authors :
דסברג, שמואל
;
.
Volume :
22
Co-Authors:
Dasberg, S., The Volcani Institute of Agricultural Research, Bet Dagan, Israel
Mendel, K., The Volcani Institute of Agricultural Research, Bet Dagan, Israel
Facilitators :
From page:
992
To page:
998
(
Total pages:
7
)
Abstract:
The time rate of germination and the final germination percentage of Oryzopsis holciformis decreased with increasing water stress. The optimum matric potential for germination was-0.005 bar in coarse sand and -0.5 bar in sandy loam soil. This discrepancy was explained by changes in the rate of water-supply to the seed, as determined by the area of contact between seed and germination medium, and by the hydraulic conductivity of the medium.At high soil moisture potentials germination also decreased. Such a decrease was not foundat equivalent osmotic potentials. It seems that this decrease in germination was brought about by the thickening of the water films around the seeds, which interfered with oxygen diffusion. This assumption was supported by determinations with Pt electrodes, and by previous work on germination at lowered oxygen concentrations. © 1971 OXFORD UNIVERSITY PRESS.
Note:
Related Files :
עוד תגיות
תוכן קשור
More details
DOI :
10.1093/jxb/22.4.992
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
22882
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:55
Scientific Publication
The effect of soil water and aeration on seed germination
22
Dasberg, S., The Volcani Institute of Agricultural Research, Bet Dagan, Israel
Mendel, K., The Volcani Institute of Agricultural Research, Bet Dagan, Israel
The effect of soil water and aeration on seed germination
The time rate of germination and the final germination percentage of Oryzopsis holciformis decreased with increasing water stress. The optimum matric potential for germination was-0.005 bar in coarse sand and -0.5 bar in sandy loam soil. This discrepancy was explained by changes in the rate of water-supply to the seed, as determined by the area of contact between seed and germination medium, and by the hydraulic conductivity of the medium.At high soil moisture potentials germination also decreased. Such a decrease was not foundat equivalent osmotic potentials. It seems that this decrease in germination was brought about by the thickening of the water films around the seeds, which interfered with oxygen diffusion. This assumption was supported by determinations with Pt electrodes, and by previous work on germination at lowered oxygen concentrations. © 1971 OXFORD UNIVERSITY PRESS.
Scientific Publication
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