Influence of leaf water status on stomatal response to humidity, hydraulic conductance, and soil drought in Betula occidentalis

Planta ◽  
1995 ◽  
Vol 196 (2) ◽  
Author(s):  
NicanorZ. Saliendra ◽  
JohnS. Sperry ◽  
JonathanP. Comstock
Keyword(s):  
Water Status ◽  
Hydraulic Conductance ◽  
Leaf Water ◽  
Soil Drought ◽  
Stomatal Response ◽  
Leaf Water Status ◽  
Betula Occidentalis

scholarly journals Leaf water status and stem xylem flux in relation to soil drought in five temperate broad-leaved tree species with contrasting water use strategies

2009 ◽  
Vol 66 (1) ◽  
pp. 101-101 ◽  
Author(s):  
Paul Köcher ◽  
Tobias Gebauer ◽  
Viviana Horna ◽  
Christoph Leuschner
Keyword(s):  
Water Use ◽  
Tree Species ◽  
Water Status ◽  
Leaf Water ◽  
Soil Drought ◽  
Leaf Water Status

Leaf Gas Exchange and Water Relations of Lupins and Wheat. III. Abscisic Acid and Drought-Induced Stomatal Closure

1989 ◽  
Vol 16 (5) ◽  
pp. 429 ◽  
Author(s):  
IE Henson ◽  
CR Jensen ◽  
NC Turner
Keyword(s):  
Abscisic Acid ◽  
Water Potential ◽  
Leaf Water Potential ◽  
Leaf Gas Exchange ◽  
Water Status ◽  
Stomatal Closure ◽  
Triticum Aestivum L ◽  
Leaf Water ◽  
Stomatal Response ◽  
Leaf Water Status

Changes in the content of endogenous abscisic acid (ABA) were followed in glasshouse experiments during stomatal closure induced by drought in leaves of lupin (Lupinus cosentinii Guss. cv. Eregulla) and wheat (Triticum aestivum L. cvv. Gamenya and Warigal), species which differ in stomatal sensitivity to changes in leaf water potential. Increases in bulk leaf ABA concentration were closely correlated with decreases in leaf conductance in both species. In lupin, substantial increases in ABA and decreases in conductance occurred over a very narrow range of leaf water potential. ABA concentrations in wheat leaves were highly negatively correlated with bulk leaf turgor, but there was no significant relationship between ABA and turgor in lupin. However, ABA accumulated progressively in the leaves of both species as soil water content decreased. Stomatal closure in lupin could be induced by supplying exogenous ABA to detached leaves via the transpiration stream at concentrations of 10-4 to 10-2 mol m-3 of (+)-ABA. Abaxial stomata closed more readily than those on the adaxial surface in response to both drought and applied ABA. Stomatal response to ABA was not affected by the presence of the cytokinin zeatin, and zeatin by itself had no effect on conductance. When treatments designed to reduce endogenous cytokinin concentrations were imposed (prolonged leaf detachment or prior drought), stomatal response to low concentrations of ABA was enhanced. However, such treatments did not significantly change the stomatal response to high ABA concentrations, nor affect the stomatal conductance of leaves supplied with water alone. It is concluded that drought-induced stomatal closure could be mediated by ABA in both wheat and lupin, despite the initially small change in leaf water status in the latter species.

Effect of Soil Drought Stress on Leaf Water Status, Membrane Permeability and Enzymatic Antioxidant System of Maize

Pedosphere ◽  
2006 ◽  
Vol 16 (3) ◽  
pp. 326-332 ◽  
Author(s):  
Li-Ping BAI ◽  
Fang-Gong SUI ◽  
Ti-Da GE ◽  
Zhao-Hui SUN ◽  
Yin-Yan LU ◽  
...  
Keyword(s):  
Drought Stress ◽  
Membrane Permeability ◽  
Antioxidant System ◽  
Water Status ◽  
Leaf Water ◽  
Soil Drought ◽  
Leaf Water Status ◽  
Enzymatic Antioxidant

Employment of artificial neural networks for non-invasive estimation of leaf water status using color features: a case study in Spathiphyllum wallisii

2021 ◽  
Vol 43 (5) ◽  
Author(s):  
Amin Taheri-Garavand ◽  
Abdolhossein Rezaei Nejad ◽  
Dimitrios Fanourakis ◽  
Soodabeh Fatahi ◽  
Masoumeh Ahmadi Majd
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Water Status ◽  
Leaf Water ◽  
Leaf Water Status ◽  
Non Invasive ◽  
Color Features ◽  
Artificial Neural

Visual estimation of plant water status in cereals

1979 ◽  
Vol 92 (1) ◽  
pp. 83-89 ◽  
Author(s):  
H. G. Jones
Keyword(s):  
Spring Wheat ◽  
Water Status ◽  
Plant Morphology ◽  
Leaf Water ◽  
Plant Water Status ◽  
Plant Water ◽  
Visual Estimation ◽  
Leaf Water Status ◽  
Visual Scoring ◽  
Breeding Programmes

SummaryThe potential offered for plant breeding programmes by visual scoring techniques for plant water status was investigated in rice and spring wheat. It was found that differing plant morphology could seriously bias visual estimates of leaf water potential, particularly in spring wheat. In spite of this problem, it was found that at least for rice, this type of approach may have potential in future breeding programmes where an estimate of leaf water status is required, such as those for drought tolerance, so long as a high intensity of selection is not necessary.

Best hyperspectral indices for tracing leaf water status as determined from leaf dehydration experiments

2015 ◽  
Vol 54 ◽  
pp. 96-107 ◽  
Author(s):  
Zhenxing Cao ◽  
Quan Wang ◽  
Chaolei Zheng
Keyword(s):  
Water Status ◽  
Leaf Water ◽  
Leaf Water Status
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