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פותח על ידי קלירמאש פתרונות בע"מ -
Sap flow in the stem of water stressed soybean and maize plants
Year:
1990
Source of publication :
Irrigation Science
Authors :
כהן, יחזקאל
;
.
Volume :
11
Co-Authors:
Cohen, Y., Institute of Soils and Water, A.R.O., The Volcani Center, Bet Dagan, Israel, Agronomy Department, University of Illinois, Urbana, 61801, IL, United States
Huck, M.G., USDA-ARS Agricultural Research Service in cooperation with Illinois Agr. Experiment Station, Urbana, 61801, IL, United States
Hesketh, J.D., USDA-ARS Agricultural Research Service in cooperation with Illinois Agr. Experiment Station, Urbana, 61801, IL, United States
Frederick, J.R., USDA-ARS Agricultural Research Service in cooperation with Illinois Agr. Experiment Station, Urbana, 61801, IL, United States
Facilitators :
From page:
45
To page:
50
(
Total pages:
6
)
Abstract:
Water stress was imposed upon soybean [Glyxine max (L.) Merr. cv. Williams] and maize [Zea mays (L.) cv. Pioneer 3377] plants grown under controlled-environment conditions during a growing period of several irrigation cycles. Transpiration rates of individual plants were measured with a calibrated heat-pulse method and correlated to the rate of water loss obtained from successive weighings of the pots containing irrigated or water-stressed plants. Transpiration rate was reduced in the stressed plants of both species, but the reduction was not linear with decreasing soil matric potential. Transpiration rates declined rapidly at high soil matric potential, and dropped more slowly as the soil dried. Although measured transpiration rate declined by nearly 30% following a reduction of soil matric potential to -0.1 MPa, differences in leaf water potential and CO2 assimilation rate were small and less than the sensitivity of the measurement techniques used. Total system resistance to water flow increased as the soil dried. © 1990 Springer-Verlag.
Note:
Related Files :
Flow of Fluids--Analysis
Glycine max
Grain
irrigation
Maize Plants
sap flow
Soils--Moisture
Soybean Plants
water stress
Zea mays
עוד תגיות
תוכן קשור
More details
DOI :
10.1007/BF00189994
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
29203
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:45
Scientific Publication
Sap flow in the stem of water stressed soybean and maize plants
11
Cohen, Y., Institute of Soils and Water, A.R.O., The Volcani Center, Bet Dagan, Israel, Agronomy Department, University of Illinois, Urbana, 61801, IL, United States
Huck, M.G., USDA-ARS Agricultural Research Service in cooperation with Illinois Agr. Experiment Station, Urbana, 61801, IL, United States
Hesketh, J.D., USDA-ARS Agricultural Research Service in cooperation with Illinois Agr. Experiment Station, Urbana, 61801, IL, United States
Frederick, J.R., USDA-ARS Agricultural Research Service in cooperation with Illinois Agr. Experiment Station, Urbana, 61801, IL, United States
Sap flow in the stem of water stressed soybean and maize plants
Water stress was imposed upon soybean [Glyxine max (L.) Merr. cv. Williams] and maize [Zea mays (L.) cv. Pioneer 3377] plants grown under controlled-environment conditions during a growing period of several irrigation cycles. Transpiration rates of individual plants were measured with a calibrated heat-pulse method and correlated to the rate of water loss obtained from successive weighings of the pots containing irrigated or water-stressed plants. Transpiration rate was reduced in the stressed plants of both species, but the reduction was not linear with decreasing soil matric potential. Transpiration rates declined rapidly at high soil matric potential, and dropped more slowly as the soil dried. Although measured transpiration rate declined by nearly 30% following a reduction of soil matric potential to -0.1 MPa, differences in leaf water potential and CO2 assimilation rate were small and less than the sensitivity of the measurement techniques used. Total system resistance to water flow increased as the soil dried. © 1990 Springer-Verlag.
Scientific Publication
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