Variation in salinity tolerance and water use strategies in an introduced woody halophyte ( Tamarix spp.)

2021 ◽  
Author(s):  
Randall W Long ◽  
Carla M D’Antonio ◽  
Tom L Dudley ◽  
Kevin R Hultine
Keyword(s):  
Water Use ◽  
Salinity Tolerance ◽  
Tamarix Spp

scholarly journals Water Loss and Salvage in Saltcedar (Tamarix spp.) Stands on the Pecos River, Texas

2009 ◽  
Vol 2 (4) ◽  
pp. 309-317 ◽  
Author(s):  
William L. Hatler ◽  
Charles R. Hart
Keyword(s):  
Water Use ◽  
Water Loss ◽  
Management Strategy ◽  
Control Site ◽  
Ecological Functions ◽  
Pecos River ◽  
Tamarix Spp ◽  
A Site ◽  
Saltcedar Control

AbstractWater use by saltcedar, an invasive phreatophyte, is of significant concern in many riparian zones in the western United States. Diurnal groundwater fluctuations were analyzed to estimate evapotranspiration and water salvage (water available for other ecological functions) in saltcedar stands over a 6-yr period on a site along the Pecos River in Texas. Seasonal stand-level saltcedar water loss at an untreated control site ranged from 0.42 to 1.18 m/yr. Seasonal water salvage following application of imazapyr ranged from 31% 4 yr after treatment to 82% 2 yr after treatment. Significant water savings may be achieved by chemical saltcedar control, dependent upon water use by replacement vegetation and saltcedar regrowth. A regrowth management strategy is essential to maintain long-term water salvage.

Wide-Area Estimates of Stand Structure and Water Use of Tamarix spp. on the Lower Colorado River: Implications for Restoration and Water Management Projects

2008 ◽  
Vol 16 (1) ◽  
pp. 136-145 ◽  
Author(s):  
Pamela L. Nagler ◽  
Edward P. Glenn ◽  
Kamel Didan ◽  
John Osterberg ◽  
Fiona Jordan ◽  
...  
Keyword(s):  
Water Management ◽  
Water Use ◽  
Colorado River ◽  
Stand Structure ◽  
Wide Area ◽  
Tamarix Spp ◽  
Lower Colorado River

Kaolin improves salinity tolerance, water use efficiency and quality of tomato

2016 ◽  
Vol 167 ◽  
pp. 29-37 ◽  
Author(s):  
Francesca Boari ◽  
Antonio Donadio ◽  
Bernardo Pace ◽  
Maria Immacolata Schiattone ◽  
Vito Cantore
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Salinity Tolerance ◽  
Use Efficiency

Early impacts of biological control on canopy cover and water use of the invasive saltcedar tree (Tamarix spp.) in western Nevada, USA

Oecologia ◽  
2010 ◽  
Vol 165 (3) ◽  
pp. 605-616 ◽  
Author(s):  
Robert R. Pattison ◽  
Carla M. D’Antonio ◽  
Tom L. Dudley ◽  
Kip K. Allander ◽  
Benjamin Rice
Keyword(s):  
Biological Control ◽  
Water Use ◽  
Canopy Cover ◽  
Tamarix Spp

scholarly journals Salinity Tolerance and Leaf Water Use Efficiency in Citrus

2010 ◽  
Vol 135 (1) ◽  
pp. 33-39 ◽  
Author(s):  
James P. Syvertsen ◽  
Juan C. Melgar ◽  
Francisco García-Sánchez
Keyword(s):  
Plant Growth ◽  
Water Use Efficiency ◽  
Water Use ◽  
Salinity Tolerance ◽  
Weight Ratio ◽  
High Growth ◽  
Poncirus Trifoliata ◽  
Published Data ◽  
Citrus Rootstock ◽  
Use Efficiency

In three separate experiments, the growth and water use of salinized citrus rootstock seedlings and grafted trees were modified using different growth substrates, elevated CO2, or 50% shade screen under field conditions. By reanalyzing previously published data, we tested the hypothesis that salinity tolerance in citrus can be characterized as the ability to maintain low levels of leaf Cl− accumulation through high plant growth and high water use efficiency (WUE) under saline conditions. Well-irrigated salinized seedlings of the relatively salt-sensitive Carrizo citrange [Carr (Citrus sinensis × Poncirus trifoliata)] were grown in sand, clay, or a peat-based soilless media. Salinity stress reduced plant growth and water use. Leaf Cl− concentration was negatively related to plant growth, but leaf Cl− increased with transpiration rate in low-saline treatments. In a second experiment using salinized seedlings of the relatively salt-tolerant Cleopatra mandarin [Cleo (Citrus reticulata)] grown along with Carr seedlings with or without elevated CO2, leaf Cl− was negatively related to growth and to shoot/root dry weight ratio, but was positively related to water use such that leaf Cl− was negatively related to leaf WUE. In a third experiment using salinized 2-year-old ‘Valencia’ orange (C. sinensis) trees grafted on Cleo or Carr rootstocks and grown with or without shadecloth, leaf Cl− was positively related to leaf transpiration as both were higher in the spring than in the fall, regardless of rootstock or shade treatment. Overall, leaf Cl− was positively related to water use and was negatively related to leaf WUE. High growth, low water use, and consequently, high WUE of salinized citrus were related to low leaf Cl−. Such relationships can be used as indicators of salinity tolerance.

scholarly journals Salinity Tolerance of Cleopatra Mandarin and Carrizo Citrange Citrus Rootstock Seedlings Is Affected by CO2 Enrichment during Growth

2006 ◽  
Vol 131 (1) ◽  
pp. 24-31 ◽  
Author(s):  
Francisco García-Sánchez ◽  
J.P. Syvertsen
Keyword(s):  
Gas Exchange ◽  
Plant Growth ◽  
Water Use Efficiency ◽  
Water Use ◽  
Salinity Tolerance ◽  
Leaf Growth ◽  
Carrizo Citrange ◽  
Citrus Rootstock ◽  
Use Efficiency ◽  
Cleopatra Mandarin

Three-month-old citrus rootstock seedlings of the Cl- excluder Cleopatra mandarin (Citrus reticulata Blanco) and the Cl- accumulator Carrizo citrange [C. sinensis (L.) Osb. × Poncirus trifoliata L.] were fertilized with nutrient solution with or without additional 50 mm NaCl and grown at either ambient CO2 (360 μL·L-1) or elevated CO2 (700 μL·L-1) in similar controlled environment greenhouses for 8 weeks. Elevated CO2 increased plant growth, shoot/root ratio, leaf dry weight per area, net assimilation of CO2, chlorophyll, and water-use efficiency but decreased transpiration rate. Elevated CO2 decreased leaf Ca2+ and N concentration in non-salinized Cleopatra. Salinity increased leaf Cl- and Na+ in both genotypes. Carrizo had higher concentrations of Cl-but lower Na+ in leaves than Cleopatra. Salinity decreased plant growth, shoot/root ratio, net gas exchange, water use, and root Ca+2 but increased root N in both genotypes regardless of CO2 level. Neither salinity nor elevated CO2 affected leaf chlorophyll fluorescence (Fv/Fm). Carrizo had higher Fv/Fm, leaf gas exchange, chlorophyll, N, and Ca2+ than Cleopatra. Salinity-induced decreases in leaf osmotic potential increased leaf turgor especially at elevated CO2. The increase in leaf growth at elevated CO2 was greater in salinized than in nonsalinized Carrizo but was similar in Cleopatra seedlings regardless of salt treatment. In addition, salinity decreased water-use efficiency more at elevated CO2 than at ambient CO2 in Cleopatra but not in Carrizo. Elevated CO2 also decreased leaf Cl- and Na+ in Carrizo but tended to increase both ions in Cleopatra leaves. Based on leaf growth, water-use efficiency and salt ion accumulation, elevated CO2 increased salinity tolerance in the relatively salt-sensitive Carrizo more than in the salt-tolerant Cleopatra. In salinized seedlings of both genotypes, Cl- and Na+ concentration changes in response to eCO2 in leaves vs. roots were generally in opposite directions. Thus, the modifications of citrus seedling responses to salinity by the higher growth and lower transpiration at elevated CO2 were not only species dependent, but also involved whole plant growth and allocations of Na+ and Cl-.

Sign in / Sign up

Export Citation Format

Share Document