Tolerance of canola to drought and salinity stresses in terms of root water uptake model parameters

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Title:Tolerance of canola to drought and salinity stresses in terms of root water uptake model parameters
Creators:
Yanagawa, Aki; akihoshi0619 at gmail dot com; Department of Mechanical and Environmental Informatics, Tokyo Institute of Technology, 2-12-1-W8-4 O-okayama, Meguro-ku, Tokyo, 152-8552, Japan.
Fujimaki, Haruyuki; The National University Corporation Arid Land Research Center, Tottori University, 1390 Hamasaka, Tottori, 680-0001, Japan.
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 61, 1, pp. 73-80
Uncontrolled Keywords:Irrigation with saline water, Biofuel crops, Electrical conductivity, Feddes’s model

Abstract

Canola (Brassica napus) is cultivated for oil as a biofuel crop. Few quantitative data concerning its tolerance to abiotic stresses has been presented. We evaluated the tolerances of canola to drought and salinity stresses in terms of parameter values in a macroscopic root water uptake model. We conducted an experiment using nine columns with two plants in each: three columns were under drought stresses, another three were under saline stress and others provided potential transpiration. Two soil moisture and salinity probes were inserted into each of the six columns under stress to monitor water content and electrical conductivity. Weight of the columns was manually measured to obtain daily transpiration. Water uptake at each depth and time was calculated by substituting linearly interpolated matric and osmotic potentials into the stress response function. Determined stress response functions indicated that canola is more sensitive to drought compared to Jatropha. While, it was found to be as tolerant as Jatropha to salinity stress in terms of transpiration. Matric potential was more determining than osmotic potential to root water uptake of canola.

Official URL: http://147.213.145.2/vc/vc1.asp

Title:Tolerance of canola to drought and salinity stresses in terms of root water uptake model parameters
Translated title:Tolerance of canola to drought and salinity stresses in terms of root water uptake model parameters
Creators:
Yanagawa, Aki; akihoshi0619 at gmail dot com; Department of Mechanical and Environmental Informatics, Tokyo Institute of Technology, 2-12-1-W8-4 O-okayama, Meguro-ku, Tokyo, 152-8552, Japan.
Fujimaki, Haruyuki; The National University Corporation Arid Land Research Center, Tottori University, 1390 Hamasaka, Tottori, 680-0001, Japan.
Uncontrolled Keywords:Irrigation with saline water, Biofuel crops, Electrical conductivity, Feddes’s model
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:61
Number:1
Page Range:pp. 73-80
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:7670
Item Type:Article
Deposited On:26 Mar 2013 15:39
Last Modified:26 Mar 2013 14:39

Citation

Yanagawa, Aki; Fujimaki, Haruyuki (2013) Tolerance of canola to drought and salinity stresses in terms of root water uptake model parameters. Journal of Hydrology and Hydromechanics, 61 (1). pp. 73-80. ISSN 0042-790X

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