Arid
DOI10.1016/j.agwat.2017.05.003
Spinach biomass yield and physiological response to interactive salinity and water stress
Ors, Selda1; Suarez, Donald L.2
通讯作者Suarez, Donald L.
来源期刊AGRICULTURAL WATER MANAGEMENT
ISSN0378-3774
EISSN1873-2283
出版年2017
卷号190页码:31-41
英文摘要

Critical shortages of fresh water throughout arid regions are forcing growers to decide among the following options, applying insufficient fresh water, causing water stress, applying saline water causing salt stress or applying some combination minimizing saline water application, causing combined water and salt stress. A comprehensive approach to manage drought and salinity is to evaluate the impact of water stress and salt stress individually and then examine their interactions on plant production. To analyze salinity and water stress responses and their interaction together on spinach growth, an experiment was conducted from April 1 to May 21, 2013, using 6 different irrigation waters at electrical conductivity (EC): 0.85, 4, 7, 9, 12, 15 dS m(-1). Soil moisture was recorded by sensors and stress treatments had the following soil water matric pressure control (-45 kPa), -200 to -300 kPa, and -400 to -500 kPa. We evaluated three replicates per treatment for yield, vegetative parameters, ion composition, and physiological parameters. The results showed that the spinach yield response to salt and water stress was very different. Spinach yield initially increased with salinity and subsequently decreased only when the irrigation water was EC 9 dS m(-1) and above (osmotic pressure of -310 kPa). In contrast, yield decreased at the first water stress level (-230 kPa) relative to control. The additional presence of salinity stress decreased the relative yield response due to water stress. Similarly under water stress the relative yield response to increasing salinity was reduced. Although no model provided good prediction of stress response, the best predictive model (relative error) was one that considered the response to multiple stresses as the product of the response to the individual stresses. Published by Elsevier B.V.


英文关键词Stress Drought WUE Photosynthesis Ion composition
类型Article
语种英语
国家Turkey ; USA
收录类别SCI-E
WOS记录号WOS:000404700500004
WOS关键词SALT STRESS ; DROUGHT TOLERANCE ; STOMATAL RESPONSES ; MINERAL-CONTENT ; USE EFFICIENCY ; GROWTH ; PLANT ; DEFICIT ; LEAVES ; ION
WOS类目Agronomy ; Water Resources
WOS研究方向Agriculture ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/197159
作者单位1.Ataturk Univ, Dept Agr Struct & Irrigat, TR-25240 Erzurum, Turkey;
2.USDA ARS, Salin Lab, 450 W Big Springs Rd, Riverside, CA 92507 USA
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GB/T 7714
Ors, Selda,Suarez, Donald L.. Spinach biomass yield and physiological response to interactive salinity and water stress[J],2017,190:31-41.
APA Ors, Selda,&Suarez, Donald L..(2017).Spinach biomass yield and physiological response to interactive salinity and water stress.AGRICULTURAL WATER MANAGEMENT,190,31-41.
MLA Ors, Selda,et al."Spinach biomass yield and physiological response to interactive salinity and water stress".AGRICULTURAL WATER MANAGEMENT 190(2017):31-41.
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