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פותח על ידי קלירמאש פתרונות בע"מ -
Is osmotic potential a more appropriate property than electrical conductivity for evaluating whole-plant response to salinity?
Year:
2009
Authors :
בן-גל, אלון
;
.
ירמיהו, אורי
;
.
Volume :
65
Co-Authors:
Ben-Gal, A., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Gilat Research Center, Mobile Post Negev 2, 85280, Israel
Borochov-Neori, H., Southern Arava Research and Development, Mobile Post Hevel Eilot, 88820, Israel
Yermiyahu, U., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Gilat Research Center, Mobile Post Negev 2, 85280, Israel
Shani, U., Department of Soil and Water Sciences, Faculty of Agricultural, Food and Environmental Quality Sciences, P.O. Box 12, Rehovot, 76100, Israel
Facilitators :
From page:
232
To page:
237
(
Total pages:
6
)
Abstract:
Studies of whole-plant or crop responses to salinity often focus on yield or growth reduction in terms of solution ion concentration or electrical conductivity. The response functions describing salt stress may be better presented in terms of solution osmotic potential. We looked at the effect of increasing concentrations of NaCl and CaCl2, either alone or in equinormal combination, on three different plant species: bean (Phaseolus vulgaris L.), corn (Zea mays L.) and melon (Cucumis melo L.). Corn and melon were found to be relatively tolerant and beans more sensitive to salinity. When yield response was related to the electrical charge concentration of the salts, i.e. salinity was expressed in units of mequiv. L-1 or electrical conductivity, the stress effects of Na and Ca appeared to be of different magnitudes: plant growth was more sensitive to excess Na than to excess Ca and the effect of combined Na and Ca was intermediate. The effects of the two salts were, however, indistinguishable when salinity was expressed in terms of osmotic potential of the water. For all three species, the response curves of yield as a function of level of equipotential solutions of NaCl, CaCl2 or combinations of the two salts practically overlapped. Presentation and interpretation of the whole-plant salinity response in terms of osmotic potential would be beneficial in attempts to differentiate between the osmotic and toxic effects of salinity, in normalizing data sets and in increasing their relevance in practical applications. © 2008 Elsevier B.V. All rights reserved.
Note:
Related Files :
Corn (Zea mays L.)
crop yield
Cucumis melo
growth response
Phaseolus vulgaris
Response functions
Zea mays
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.envexpbot.2008.09.006
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
30426
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:54
Scientific Publication
Is osmotic potential a more appropriate property than electrical conductivity for evaluating whole-plant response to salinity?
65
Ben-Gal, A., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Gilat Research Center, Mobile Post Negev 2, 85280, Israel
Borochov-Neori, H., Southern Arava Research and Development, Mobile Post Hevel Eilot, 88820, Israel
Yermiyahu, U., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Gilat Research Center, Mobile Post Negev 2, 85280, Israel
Shani, U., Department of Soil and Water Sciences, Faculty of Agricultural, Food and Environmental Quality Sciences, P.O. Box 12, Rehovot, 76100, Israel
Is osmotic potential a more appropriate property than electrical conductivity for evaluating whole-plant response to salinity?
Studies of whole-plant or crop responses to salinity often focus on yield or growth reduction in terms of solution ion concentration or electrical conductivity. The response functions describing salt stress may be better presented in terms of solution osmotic potential. We looked at the effect of increasing concentrations of NaCl and CaCl2, either alone or in equinormal combination, on three different plant species: bean (Phaseolus vulgaris L.), corn (Zea mays L.) and melon (Cucumis melo L.). Corn and melon were found to be relatively tolerant and beans more sensitive to salinity. When yield response was related to the electrical charge concentration of the salts, i.e. salinity was expressed in units of mequiv. L-1 or electrical conductivity, the stress effects of Na and Ca appeared to be of different magnitudes: plant growth was more sensitive to excess Na than to excess Ca and the effect of combined Na and Ca was intermediate. The effects of the two salts were, however, indistinguishable when salinity was expressed in terms of osmotic potential of the water. For all three species, the response curves of yield as a function of level of equipotential solutions of NaCl, CaCl2 or combinations of the two salts practically overlapped. Presentation and interpretation of the whole-plant salinity response in terms of osmotic potential would be beneficial in attempts to differentiate between the osmotic and toxic effects of salinity, in normalizing data sets and in increasing their relevance in practical applications. © 2008 Elsevier B.V. All rights reserved.
Scientific Publication
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