Growth and plant-water relations of sweet potato (Ipomea batata) as affected by soil moisture regimes

1983 ◽  
Vol 70 (1) ◽  
pp. 95-106 ◽  
Author(s):  
B. S. Ghuman ◽  
R. Lal
Keyword(s):  
Soil Moisture ◽  
Sweet Potato ◽  
Water Relations ◽  
Plant Water Relations ◽  
Plant Water ◽  
Moisture Regimes ◽  
Ipomea Batata

Soil–plant water relations of two subalpine herbs from Mount St. Helens

1988 ◽  
Vol 66 (5) ◽  
pp. 809-818 ◽  
Author(s):  
David M. Chapin ◽  
L. C. Bliss
Keyword(s):  
Soil Moisture ◽  
Water Relations ◽  
Plant Water Relations ◽  
Plant Water ◽  
Evaporative Demand ◽  
Xylem Pressure ◽  
Turgor Loss Point ◽  
High Maximum ◽  
Tephra Deposits ◽  
Mount St Helens

The subalpine environment of Mount St. Helens and other southern Cascade volcanoes is characterized by porous, pyroclastic soils and summer droughts. To evaluate plant drought stress in this environment, we examined plant water relations of Eriogonum pyrolifolium, a wintergreen, shallow-rooted, rosette perennial, and Polygonum newberryi, a deciduous, deep-rooted semierect perennial (both in Polygonaceae), at a subalpine site (elevation 1575 m) on Mount St. Helens. In a very dry summer, soil moisture below 20 cm remained above −0.1 MPa, but surface tephra deposits developed soil water potentials below −4.0 MPa. Surface tephra deposits had a mulching effect on underlying pre-eruption soils. Predawn xylem pressure potentials for adults of each species were never below −0.8 MPa, but midday xylem pressure potentials were often measured near or below the estimated turgor-loss point when vapor pressure deficits were high (maximum 3.1 kPa). Compared with Polygonum, Eriogonum had lower xylem pressure potentials, a lower turgor-loss point (mean −1.00 and −1.42 MPa, respectively), and higher conductance. In both species there was no midday depression in leaf conductance and little photosynthetic response to high evaporative demand. Thus, these species are not particularly conservative in water use and appear to rely on abundant soil moisture throughout the short growing season.

Plant water relations ofTamarix ramosissimain response to the imposition and alleviation of soil moisture stress

1997 ◽  
Vol 36 (3) ◽  
pp. 527-540 ◽  
Author(s):  
D.A Devitt ◽  
J.M Piorkowski ◽  
S.D Smith ◽  
J.R Cleverly ◽  
A Sala
Keyword(s):  
Soil Moisture ◽  
Water Relations ◽  
Moisture Stress ◽  
Plant Water Relations ◽  
Plant Water ◽  
Soil Moisture Stress

Elevated CO2increases soil moisture and enhances plant water relations in a long-term field study in semi-arid shortgrass steppe of Colorado

2004 ◽  
Vol 259 (1/2) ◽  
pp. 169-179 ◽  
Author(s):  
Jim A. Nelson ◽  
Jack A. Morgan ◽  
Daniel R. LeCain ◽  
Arvin R. Mosier ◽  
Daniel G. Milchunas ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Field Study ◽  
Water Relations ◽  
Shortgrass Steppe ◽  
Plant Water Relations ◽  
Plant Water ◽  
Semi Arid ◽  
Term Field

scholarly journals Growth response and soil–plant water relations of 4 dominant psammophyte species with soil moisture in central Inner Mongolia

2014 ◽  
Vol 38 ◽  
pp. 325-333
Author(s):  
Yuanrun ZHENG ◽  
Lianhe JIANG ◽  
Yong GAO ◽  
Xi CHEN ◽  
Geping LUO ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Water Relations ◽  
Inner Mongolia ◽  
Growth Response ◽  
Plant Water Relations ◽  
Plant Water

scholarly journals Applying ‘drought’ to potted plants by maintaining suboptimal soil moisture improves plant water relations

2017 ◽  
Vol 68 (9) ◽  
pp. 2413-2424 ◽  
Author(s):  
Jaime Puértolas ◽  
Elisabeth K. Larsen ◽  
William J. Davies ◽  
Ian C. Dodd
Keyword(s):  
Soil Moisture ◽  
Water Relations ◽  
Plant Water Relations ◽  
Plant Water ◽  
Potted Plants

scholarly journals Trait plasticity and covariance along a continuous soil moisture gradient

2020 ◽  
Author(s):  
J. Grey Monroe ◽  
Haoran Cai ◽  
David L. Des Marais
Keyword(s):  
Soil Moisture ◽  
Water Relations ◽  
Moisture Gradient ◽  
Plant Water Relations ◽  
Plant Water ◽  
Soil Moisture Gradient ◽  
Non Linear ◽  
Model Grass ◽  
Soil Moisture Variability ◽  
Moisture Variability

Water availality is perhaps the greatest environmental determinant of plant yield and fitness. Yet our understanding of plant-water relations is limited because it is primarily informed by experiments considering soil moisture variability at two discrete levels - wet and dry - rather than as a continually varying environmental gradient. Here we used experimental and statistical methods based on function-valued traits to explore responses to continuously varying soil moisture gradient in physiological and morphological traits in two species and five genotypes each of the model grass Brachypodium. We find that most traits exhibit non-linear responses to soil moisture variability. We also observe differences in the shape of these non-linear responses between traits, species, and genotypes. Emergent phenomena arise from this variation including changes in trait correlations and evolutionary constraints as a function of soil moisture. These results point to the importance of considering non-linearity in plant-water relations to understand plastic and evolutionary responses to changing climates.

scholarly journals Oxygen Availability in Polyethylene Glycol Solutions and Its Implications in Plant-Water Relations

1975 ◽  
Vol 55 (1) ◽  
pp. 20-24 ◽  
Author(s):  
John Mexal ◽  
James T. Fisher ◽  
Janet Osteryoung ◽  
C. P. Patrick Reid
Keyword(s):  
Polyethylene Glycol ◽  
Water Relations ◽  
Oxygen Availability ◽  
Plant Water Relations ◽  
Plant Water
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