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1. Effect of temperature and water potential on Alyssum homolocarpum seed germination: Quantification of the cardinal temperatures and using hydro thermal time

Author:
Zaferanieh, Mohsen; Mahdavi, Batool; Torabi, Benjamin
Source:
South African journal of botany 2020 v.131 pp. 259-266
ISSN:
0254-6299
Subject:
water potential,   etc   ; Alyssum homalocarpum; regression analysis; seed germination; seeds; standard deviation; temperature;     Show all 7 Subjects
Abstract:
... This research was carried out to quantify the rate of Alyssum homolocarpum germination in response to temperature, and water potential. We compared three nonlinear regression models (Dent-like, segmented, and beta) to describe the germination rate-temperature relationships of Alyssum homolocarpum. The seeds were germinated at seven temperatures (5,10,15,20,25,30 and 35 °C) and six water potentials ...
DOI:
10.1016/j.sajb.2020.02.006

2. Quantifying seed germination response of melon (Cucumis melo L.) to temperature and water potential: Thermal time, hydrotime and hydrothermal time models

Author:
Saberali, S.F.; Shirmohamadi-Aliakbarkhani, Z.
Source:
South African journal of botany 2020 v.130 pp. 240-249
ISSN:
0254-6299
Subject:
water potential,   etc   ; Cucumis melo; data collection; environmental factors; melons; models; prediction; seed germination; seeds; temperature;     Show all 10 Subjects
Abstract:
... Quantifying the germination behaviour of seeds against fluctuating environmental conditions can use as a useful tool for seed ecological studies. The response of seed germination rate to temperature (T) and water potential (Ψ) can be described using thermal time (TT), hydrotime (HT), and hydrothermal time (HTT) models. The germination behaviour of Persian melons (C. melo L.) were studied over a ra ...
DOI:
10.1016/j.sajb.2019.12.024

3. Molecular mechanisms mediating root hydrotropism: what we have observed since the rediscovery of hydrotropism

Author:
Miyazawa, Yutaka; Takahashi, Hideyuki
Source:
Journal of plant research 2020 v.133 no.1 pp. 3-14
ISSN:
0918-9440
Subject:
water potential,   etc   ; Arabidopsis thaliana; genetic analysis; gravitropism; hydrotropism; plant adaptation; roots;     Show all 7 Subjects
Abstract:
... Roots display directional growth toward moisture in response to a water potential gradient. Root hydrotropism is thought to facilitate plant adaptation to continuously changing water availability. Hydrotropism has not been as extensively studied as gravitropism. However, comparisons of hydrotropic and gravitropic responses identified mechanisms that are unique to hydrotropism. Regulatory mechanism ...
DOI:
10.1007/s10265-019-01153-3
PubMed:
31797131
PubMed Central:
PMC7082378

4. Physical modeling investigation of rainfall infiltration in steep layered volcanoclastic slopes

Author:
Capparelli, Giovanna; Damiano, E.; Greco, R.; Olivares, L.; Spolverino, G.
Source:
Journal of hydrology 2020 v.580 pp. 124199
ISSN:
0022-1694
Subject:
water potential,   etc   ; groundwater recharge; models; rain; runoff; soil profiles; soil texture; subsurface flow;     Show all 8 Subjects
Abstract:
... Infiltration processes in layered slopes can be strongly affected by the different hydraulic properties of the soils constituting the layers, with potential downslope flow diversion that can have effects on slope stability as well as on runoff generation and groundwater recharge. In this respect, volcanoclastic soil covers represent a typical example, as layers with strongly contrasting textures a ...
DOI:
10.1016/j.jhydrol.2019.124199

5. Water potential control of turgor‐driven tracheid enlargement in Scots pine at its xeric distribution edge

Author:
Cabon, Antoine; Fernández‐de‐Uña, Laura; Gea‐Izquierdo, Guillermo; Meinzer, Frederick C.; Woodruff, David R.; Martínez‐Vilalta, Jordi; De Cáceres, Miquel
Source:
Thenew phytologist 2020 v.225 no.1 pp. 209-221
ISSN:
0028-646X
Subject:
water potential,   etc   ; Pinus sylvestris; empirical research; mechanistic models; seasonal variation; time series analysis; tracheids; trees; Spain;     Show all 9 Subjects
Abstract:
... The extent to which water availability can be used to predict the enlargement and final dimensions of xylem conduits remains an open issue. We reconstructed the time course of tracheid enlargement in Pinus sylvestris trees in central Spain by repeated measurements of tracheid diameter on microcores sampled weekly during a 2 yr period. We analyzed the role of water availability in these dynamics em ...
DOI:
10.1111/nph.16146

6. Pitcher Irrigation: Some Theoretical and Practical Aspects

Author:
Martínez de Azagra Paredes, A.; Del Río San José, J.
Source:
Irrigation and drainage 2019 v.68 no.3 pp. 542-550
ISSN:
1531-0353
Subject:
water potential,   etc   ; containers; equations; irrigation systems;     Show all 4 Subjects
Abstract:
... After a brief introduction about pitcher irrigation, the concepts of ‘suction emitter’ and ‘oozer’ are defined and the discharge equation for the latter is determined. On the basis of this formula and fixing a ‘desired water potential’, the ‘emptying time’ of porous containers is obtained, which is a parameter necessary for the design and management of these irrigation systems. All these formulas ...
DOI:
10.1002/ird.2330

7. Drought survival is positively associated with high turgor loss points in temperate perennial grassland species

Author:
Sun, Shanwen; Jung, Eun‐Young; Gaviria, Julian; Engelbrecht, Bettina M. J.
Source:
Functional ecology 2020 v.34 no.4 pp. 788-798
ISSN:
0269-8463
Subject:
leaf water potential,   etc   ; climate change; drought; drought tolerance; forbs; grasses; grasslands; herbaceous plants; plant response; prediction; turgor; woody plants; Germany;     Show all 13 Subjects
Abstract:
... Turgor loss point (πₜₗₚ) has been suggested to be a key trait for drought resistance in woody species. In herbaceous grassland species, the role of πₜₗₚ for species drought survival has not yet been tested, although grasslands are projected to experience more frequent and intense droughts with climate change. To gain insights into the role of πₜₗₚ for drought resistance of temperate perennial gras ...
DOI:
10.1111/1365-2435.13522

8. The role of leaf water potential in the temperature response of mesophyll conductance

Author:
Li, Yong; Song, Xin; Li, Si; Salter, William T.; Barbour, Margaret M.
Source:
Thenew phytologist 2020 v.225 no.3 pp. 1193-1205
ISSN:
0028-646X
Subject:
leaf water potential,   etc   ; Oryza sativa; Triticum aestivum; empirical models; energy; membrane permeability; mesophyll; photosynthesis; rice; temperature; wheat;     Show all 11 Subjects
Abstract:
... Variation in temperature (T) is usually accompanied by changes in leaf water potential (Ψₗₑₐf), which may influence mesophyll conductance (gₘ). However, the effects of Ψₗₑₐf on gₘ have not yet been considered in models of the gₘ response to temperature. Temperature responses of gₘ and Ψₗₑₐf and the response of gₘ to Ψₗₑₐf were studied in rice (Oryza sativa) and wheat (Triticum aestivum), and then ...
DOI:
10.1111/nph.16214

9. Frost fatigue and its spring recovery of xylem conduits in ring-porous, diffuse-porous, and coniferous species in situ

Author:
Dai, Yongxin; Wang, Lin; Wan, Xianchong
Source:
Plant physiology and biochemistry 2020 v.146 pp. 177-186
ISSN:
0981-9428
Subject:
xylem water potential,   etc   ; autumn; branches; conifers; embolism; frost; frost injury; hydraulic conductivity; spring; translocation (plant physiology); trees; winter; wood; xylem;     Show all 14 Subjects
Abstract:
... Frost-induced embolism and frost fatigue are two major aspects of frost damage to xylem water transport in trees. In this study, three species of each ring-porous, diffuse-porous, and coniferous trees growing in situ were used to explore their differences in winter embolism and frost fatigue. Changes in predawn water potential, predawn native embolism, maximal specific conductivity (Kmax), and cav ...
DOI:
10.1016/j.plaphy.2019.11.014

10. Linking reliance on deep soil water to resource economy strategies and abundance among coexisting understorey shrub species in subtropical pine plantations

Author:
Jiang, Peipei; Wang, Huimin; Meinzer, Frederick C.; Kou, Liang; Dai, Xiaoqin; Fu, Xiaoli
Source:
Thenew phytologist 2020 v.225 no.1 pp. 222-233
ISSN:
0028-646X
Subject:
leaf water potential,   etc   ; drought; dry season; fine roots; plantations; shrubs; soil water; species abundance; understory; water use efficiency; wood density;     Show all 11 Subjects
Abstract:
... Strategies for deep soil water acquisition (WAdₑₑₚ) are critical to a species’ adaptation to drought. However, it is unknown how WAdₑₑₚ determines the abundance and resource economy strategies of understorey shrub species. With data from 13 understorey shrub species in subtropical coniferous plantations, we investigated associations between the magnitude of WAdₑₑₚ, the seasonal plasticity of WAdₑₑ ...
DOI:
10.1111/nph.16027

11. Application of the hydrotime model to assess seed priming effects on the germination of rapeseed (Brassica napus L.) in response to water stress

Author:
Tatari, Samaneh; Ghaderi-Far, Farshid; Yamchi, Ahad; Siahmarguee, Asieh; Shayanfar, Ali; Baskin, Carol C.
Source:
Botany 2020 v.98 no.5 pp. 283-291
ISSN:
1916-2804
Subject:
water potential,   etc   ; Brassica napus; cultivars; dormancy; dormancy breaking; environmental factors; germination; models; rapeseed; seed priming; seeds; water stress;     Show all 12 Subjects
Abstract:
... Our aim was to determine whether the parameters of the hydrotime model can be used to compare the effects of seed priming treatments on germination. Seeds of three rapeseed cultivars (‘H61’, ‘H4815’, and ‘DK003’) were exposed to priming treatments and then their germination was tested at different water potentials. Seed priming improved the germination percentage, which was higher in ‘H4815’ than ...
DOI:
10.1139/cjb-2019-0192

12. Calibrating Spanner psychrometers for the effects of ambient temperature: theoretical and experimental considerations

Author:
Hou, Xuemin; Matsumoto, Nicholas J.; Matthews, Mark A.; Shackel, Kenneth A.
Source:
Biosystems engineering 2019 v.183 pp. 85-94
ISSN:
1537-5110
Subject:
water potential,   etc   ; ambient temperature; empirical models; mechanistic models; psychrometers;     Show all 5 Subjects
Abstract:
... Calibration models are indispensable for the use of Spanner-type psychrometers, but the existing calibration models have not been adequately evaluated. A non-zero intercept in the regression between electrical output (E) and water potential (Ψ) is commonly observed during Spanner psychrometer calibration, but is incompatible with the temperature correction factor (TCF) model, used to describe the ...
DOI:
10.1016/j.biosystemseng.2019.04.008

13. Hydropower system operation stability considering the coupling effect of water potential energy in surge tank and power grid

Author:
Guo, Wencheng; Peng, Zhiyuan
Source:
Renewable energy 2019 v.134 pp. 846-861
ISSN:
0960-1481
Subject:
water potential,   etc   ; differential equation; potential energy; vibration; water power;     Show all 5 Subjects
Abstract:
... This paper aims to study the hydropower system operation stability considering the coupling effect of water potential energy in surge tank and power grid. Firstly, the mathematical formulation for hydropower system with surge tank that connected to power grid is established. Then, the hydropower system operation stability is investigated. The coupling effect mechanism of surge tank and power grid ...
DOI:
10.1016/j.renene.2018.11.064

14. Influence of Drought on Foliar Water Uptake Capacity of Temperate Tree Species

Author:
Schreel, Jeroen D.M.; von der Crone, Jonas S.; Kangur, Ott; Steppe, Kathy
Source:
Forests 2019 v.10 no.7
ISSN:
1999-4907
Subject:
leaf water potential; soil water potential,   etc   ; climate change; drought; leaves; temperate zones; trees; water stress; water uptake;     Show all 9 Subjects
Abstract:
... Foliar water uptake (FWU) has been investigated in an increasing number of species from a variety of areas but has remained largely understudied in deciduous, temperate tree species from non-foggy regions. As leaf wetting events frequently occur in temperate regions, FWU might be more important than previously thought and should be investigated. As climate change progresses, the number of drought ...
DOI:
10.3390/f10070562

15. Beyond soil water potential: An expanded view on isohydricity including land–atmosphere interactions and phenology

Author:
Novick, Kimberly A.; Konings, Alexandra G.; Gentine, Pierre
Source:
Plant, cell and environment 2019 v.42 no.6 pp. 1802-1815
ISSN:
0140-7791
Subject:
leaf water potential; soil water potential,   etc   ; drought; ecosystems; leaf area index; phenology; soil water; stomatal conductance; vapor pressure deficit;     Show all 9 Subjects
Abstract:
... Over the past decade, the concept of isohydry or anisohydry, which describes the link between soil water potential (ΨS), leaf water potential (ΨL), and stomatal conductance (gₛ), has soared in popularity. However, its utility has recently been questioned, and a surprising lack of coordination between the dynamics of ΨL and gₛ across biomes has been reported. Here, we offer a more expanded view of ...
DOI:
10.1111/pce.13517
CHORUS:
10.1111/pce.13517

16. Impact of sugar beet seed priming using the SMP method on the properties of the pericarp

Author:
Chomontowski, C.; Podlaski, S.
Source:
BMC plant biology 2020 v.20 no.1 pp. 32
ISSN:
1471-2229
Subject:
water potential,   etc   ; diffusivity; electrical conductivity; helium; humidity; imbibition; pericarp; porosity; seed germination; seed moisture; seeds; solid matrix priming; sugar beet; vigor; water content; water flow;     Show all 16 Subjects
Abstract:
... BACKGROUND: This study determined the effects of two solid matrix priming methods on changes in the characteristics of two lots of the same variety of sugar beet fruits that differ in the level of vigour. RESULTS: Seed treatment within each level of vigour did not significantly affect helium and apparent density, total pore volume and total porosity. However, there was a tendency to increase poros ...
DOI:
10.1186/s12870-020-2246-4
PubMed:
31959098
PubMed Central:
PMC6972028

17. Germination response to temperature and water potential for Sprawling bauhinia (Tylosema fassoglense), a potential crop for Kenya

Author:
Otieno, V.; Ulian, T.; Nzuve, F.; Kimenju, J.
Source:
South African journal of botany 2020 v.132 pp. 463-470
ISSN:
0254-6299
Subject:
water potential,   etc   ; Bauhinia; Tylosema; analysis of variance; domestication; farmers; germplasm; nutrition; paper; seed germination; seeds; sustainable agriculture; temperature; Kenya; Lake Victoria;     Show all 15 Subjects
Abstract:
... The knowledge of cardinal temperatures is critical for understanding environmental tolerance limits for germinating plant species. However, this information is not readily available for Tylosema fassoglense [Family: Fabaceae]; despite its potential as a future crop to improve nutrition and enhance sustainable agriculture in Kenya.The objective of this study was to characterise seed germination res ...
DOI:
10.1016/j.sajb.2020.02.020

18. Assessment of pore space changes during drying and wetting cycles in hysteresis of soil water retention curve in Russia using X-ray computed tomography

Author:
Mady, Ahmed Y.; Shein, Evgeny V.
Source:
Geoderma regional 2020 v.21 pp. e00259
ISSN:
2352-0094
Subject:
soil water potential,   etc   ; computed tomography; computer software; drying; geometry; hysteresis; porosity; shrinkage; soil sampling; soil water; soil water characteristic; wet-dry cycles; Russia;     Show all 13 Subjects
Abstract:
... Hysteresis of soil water retention curve (SWRC hysteresis) is a unique character of SWRC. It can be attributed to changes in distribution, form, geometry, and connectivity of pores, as well as entrapping air. X-ray computed tomography (X-CT) is widely used for estimating the number, volume, shape, size distribution, and structure of pores. The aim of the work was to monitor visually and quantitati ...
DOI:
10.1016/j.geodrs.2020.e00259

19. Moistube Irrigation Technology: A Review

Author:
Kanda, Edwin Kimutai; Niu, Wenquan; Mabhaudhi, Tafadzwanashe; Senzanje, Aidan
Source:
Agricultural research 2020 v.9 no.2 pp. 139-147
ISSN:
2249-720X
Subject:
soil water potential,   etc   ; crop quality; deficit irrigation; evaporation; field capacity; irrigated farming; microirrigation; nanopores; runoff; soil water; water resources; water use efficiency;     Show all 12 Subjects
Abstract:
... Irrigated agriculture is under pressure to increase water use efficiency and crop water productivity because of inter-sectoral competition for scarce water resources. The shift to micro-irrigation has improved crop quality, yield and water use efficiency. Subsurface drip irrigation significantly reduces non-beneficial water balance components such as runoff and soil evaporation. However, the probl ...
DOI:
10.1007/s40003-019-00448-0

20. Estimating impacts of water-table depth on groundwater evaporation and recharge using lysimeter measurement data and bromide tracer

Author:
Huo, Siyuan; Jin, Menggui; Liang, Xing; Li, Xiang; Hao, Hongbo
Source:
Hydrogeology journal 2020 v.28 no.3 pp. 955-971
ISSN:
1431-2174
Subject:
soil water potential,   etc   ; evaporation; extinction; groundwater; groundwater recharge; irrigation; lysimeters; soil water; soil water deficit; tracer techniques; water table; wet season;     Show all 12 Subjects
Abstract:
... The presented study evaluates the effect of water-table depth on groundwater evaporation (Eg) and recharge (Rg) when they occurred alternately. A lysimeter experiment incorporating a 1-year-long bromide tracer test was conducted under conditions with a range of maintained water-table depths. The results revealed that both the Rg and Eg decreased as the water table fell, until it was down to the ex ...
DOI:
10.1007/s10040-019-02098-6