scholarly journals ENVIRONMENTAL CONDITIONS THAT MODIFY PLANT RESPONSE TO NEUTRON IRRADIATION.

1972 ◽  
Author(s):  
H.H. Smith
Keyword(s):  
Neutron Irradiation ◽  
Environmental Conditions ◽  
Plant Response

scholarly journals A comparative assessment of C02/H20 gas exchange in evergreen woody and shrubby plants under favorable and stressful environmental conditions

2020 ◽  
pp. 9-23
Author(s):  
Yu. V. Plugatar ◽  
S. P. Korsakova ◽  
M. S. Kovalev
Keyword(s):  
Water Balance ◽  
Water Deficit ◽  
Environmental Conditions ◽  
Photosynthetic Apparatus ◽  
Plant Response ◽  
Comparative Assessment ◽  
Nerium Oleander ◽  
Laurus Nobilis ◽  
Aucuba Japonica ◽  
Response To Water

A comparative assessment of the adaptive response of the photosynthetic apparatus and water regime in 6 evergreen tree and shrub plant species to the effect of abiotic factors and their strategies in supporting optimal water balance in accordance with environmental conditions was carried out. Parameters of photosynthesis light response curves under conditions of full sunlight and moderate shading were determined. It is shown that due to the low plasticity to changes in the light regime Arbutus andrachne L. may have a significant lack of light in strong shading. Important adaptive features of Laurus nobilis L., Aucuba japónica Thunb. and Viburnum tinus L. is the ability of the photosynthetic apparatus to effectively use low light and maintain a positive carbon balance in conditions of strong shading. Three types of plant response to water deficit have been identified. Drought- resistant type of water balance regulation by closing stomata is characteristic of Nerium oleander L. and Laurus nobilis. In Aucuba japónica and Prunus laurocerasus L. a reaction aimed at preserving the water balance in the plant by maintaining a high level of transpiration has been identified. The third type of plant response to water deficit which combines both types of reaction provides high adaptive ability to drought Viburnum tinus and Arbutus andrachne. Drought tolerance of Arbutus andrachne was the highest among the studied species.

scholarly journals Al toxicity of wheat grown in acidic subsoils in relation to soil solution properties and exchangeable cations

Soil Research ◽  
1993 ◽  
Vol 31 (5) ◽  
pp. 583 ◽  
Author(s):  
SJ Carr ◽  
GSP Ritchie
Keyword(s):  
Ionic Strength ◽  
Soil Solution ◽  
Western Australia ◽  
Environmental Conditions ◽  
Chemical Properties ◽  
Plant Response ◽  
Solution Properties ◽  
Fresh Weight ◽  
High Concentrations ◽  
Major Chemical

Toxic concentrations of soluble A1 in the subsoil decrease the yield of wheat grown on many yellow earths in the eastern wheatbelt of Western Australia. In our previous research (Carr et al. 1991), we observed variable plant response to high concentrations of soluble Al in subsoils of yellow earths in different regions of the wheatbelt. Environmental conditions (e.g. water supply) and/or an unidentified soil mitigating factor may have contributed to the variable plant response to soluble Al in some of the regions studied. We collected ten soils from four regions of the eastern wheatbelt of Western Australia. In a glasshouse experiment using these soils, we studied the effect of soil solution and KCl extract properties on wheat growth under uniform environmental conditions. The concentration of Al in a 0.005 M KCl extract was able to explain 97% of the variation in root fresh weight of wheat grown in the 10 soils, even though the soil solution properties were found to differ markedly between regions. For example, 97% of the variation in root fresh weight (RFW) was explained by the total [Al] in soil solution extracted from soils in one region (Merredin). In comparison, 58% of the variation in RFW was explained by the total [Al] in the soil solution extracted from soils collected from all four regions studied. Ionic strength differences and possibly [SO4] were the major chemical properties that differed between Merredin and the other regions studied. These chemical differences presumably altered the toxic proportion of Al in the soil solution, and hence, the plant response in some regions. The effect of ionic strength on toxic Al appeared to be simulated by extraction of the soil with 0.005 M KCl.

Auxins and Plant Response to Adverse Environmental Conditions

2021 ◽  
pp. 49-69
Author(s):  
Swati T. Gurme ◽  
Pankaj S. Mundada ◽  
Mahendra L. Ahire ◽  
Supriya S. Salunkhe
Keyword(s):  
Environmental Conditions ◽  
Plant Response ◽  
Adverse Environmental Conditions

Biostimulants and Plant Response Under Adverse Environmental Conditions: A Functional Interplay

2021 ◽  
pp. 417-436
Author(s):  
Giacomo Cocetta ◽  
Andrea Ertani ◽  
Roberta Bulgari ◽  
Giulia Franzoni ◽  
Silvana Nicola ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Plant Response ◽  
Adverse Environmental Conditions

Abscisic Acid and Plant Response Under Adverse Environmental Conditions

2021 ◽  
pp. 17-47
Author(s):  
Jorge Gonzalez-Villagra ◽  
Carla Figueroa ◽  
Ana Luengo-Escobar ◽  
Melanie Morales ◽  
Claudio Inostroza-Blancheteau ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Environmental Conditions ◽  
Plant Response ◽  
Adverse Environmental Conditions

Voids in Irradiated Tungsten and Molybdenum

1969 ◽  
Vol 27 ◽  
pp. 190-191
Author(s):  
Robert C. Rau ◽  
Robert L. Ladd
Keyword(s):  
Melting Point ◽  
Fast Neutron ◽  
Neutron Irradiation ◽  
Elevated Temperatures ◽  
Irradiation Temperature ◽  
The Body ◽  
Face Centered Cubic ◽  
Body Centered Cubic ◽  
Cubic Metals ◽  
Face Centered

Recent studies have shown the presence of voids in several face-centered cubic metals after neutron irradiation at elevated temperatures. These voids were found when the irradiation temperature was above 0.3 Tm where Tm is the absolute melting point, and were ascribed to the agglomeration of lattice vacancies resulting from fast neutron generated displacement cascades. The present paper reports the existence of similar voids in the body-centered cubic metals tungsten and molybdenum.

Vibration Isolator System for Electron Microscope

1990 ◽  
Vol 48 (1) ◽  
pp. 182-183
Author(s):  
K. Ohi ◽  
M. Mizuno ◽  
T. Kasai ◽  
Y. Ohkura ◽  
K. Mizuno ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Magnetic Fields ◽  
Environmental Conditions ◽  
Vibration Isolator ◽  
Air Conditioners ◽  
Vibration Isolators ◽  
Large Size ◽  
Electron Microscopes

In recent years, with electron microscopes coming into wider use, their installation environments do not necessarily give their performance full play. Their environmental conditions include air-conditioners, magnetic fields, and vibrations. We report a jointly developed entirely new vibration isolator which is effective against the vibrations transmitted from the floor.Conventionally, large-sized vibration isolators which need the digging of a pit have been used. These vibration isolators, however, are large present problems of installation and maintenance because of their large-size.Thus, we intended to make a vibration isolator which1) eliminates the need for changing the installation room2) eliminates the need of maintenance and3) are compact in size and easily installable.

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