2 edition of Ion uptake by wheat (Triticum aestivum VILL., Host) as a function of soil water suction and soil temperature found in the catalog.
Ion uptake by wheat (Triticum aestivum VILL., Host) as a function of soil water suction and soil temperature
Richard Su-Shung Young
Written in English
|Statement||by Richard Su-Shung Young.|
|The Physical Object|
|Pagination||, 98 leaves, bound :|
|Number of Pages||98|
Cadmium in the nutrient medium inhibited ion uptake by 55–60%. This was ob-served within 1h of the start of treatment (Table 1). Table 1. Ion uptake by control and Cd-treated wheat seedlings during the first hour after the start of treatment. Values represent means +SE, n=5. Concentration of Cd Ion uptake, µmol seedling–1.h–1. INTRODUCTION. Arsenate, the dominant form of arsenic (As) in aerobic conditions, is taken up by plants via the phosphate (Pi) transport systems because of the chemical similarity between arsenate and Pi (Dixon, ).It has been demonstrated that arsenate inhibits Pi uptake by yeast (Rothstein and Donovan, ), phytoplankton (), Arabidopsis thaliana (Clark et al., ), wheat (Geng et al.
THE theory that plants absorb ions by the action of carriers has become general during the past decades. It is an intermediate labile complex, formed by a combination of the carrier and the ion. Alter- natively, if the uptake mechanism can preferentially absorb one of these ions as its concentration increases, even though it may possess near-identical physico-chemical properties to the other ions, there is the possibility of a selectively competitive exclusion of the radionuclide by the preferred ion. Recent evidence for wheat.
The effects of low root zone temperatures (RZT) on nutrient demand for growth and the capacity for nutrient acquisition were compared in maize and wheat growing in nutrient solution. To differentiate between direct temperature effects on nutrient uptake and indirect effects via an altered ratio of shoot to root growth, the plants were grown with their shoot base including apical shoot meristem. Kirkby, E. and Knight, A. Influence of the level of nitrate nutrition on ion uptake and assimilation, organic acid accumulation and cation-anion balance in whole tomato plants. Plant Physiol. 60, – PubMed CrossRef Google Scholar.
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GROWTH AND ION UPTAKE BY WHEAT SUPPLIED NITROGEN AS NITRATE, OR AMMONIUM, OR BOTH * by W. COX and H. REISENAUER SUMMARY The effects Ion uptake by wheat book concentration and source (NH4, N03, and N03 plus NH4) of added N on the rate of growth, final yield, and content and rate of intake of N, P, K, Ca, Mg and S by wheat seedlings were evaluated.
Rate of growth. Varieties of wheat or barley differed considerably in their effect on the pH Level of complete nutrient solutions. Ion uptake and H + transfer between plants of three varieties of wheat and KNO 3 ‐Ca(NO 3) 2 solutions were measured to determine the reason for varietal differences in plant‐induced pH by: Roots of wheat seedlings (Triticum aestivum L.
Weibulls Starke) were cooled (+1°C) for 24 h while the shoots were kept at 25° treatment induced an increased water deficit in the leaves. Fresh weight, dry weight, and the uptake and distribution of potassium and calcium were measured before and Cited by: Growth and ion uptake by wheat supplied nitrogen as nitrate, or ammonium, or both.
Cox & H. Reisenauer Plant and Soil vol pages – ()Cite this articleCited by: Uptake and distribution of Ca was studied with excised roots and intact seedlings of wheat.
Patterns characteristic of inorganic ion uptake by roots were obtained, namely a rapid initial adsorption phase followed by a linear rate of accumulation. The former was relatively large compared to the by: Electron paramagnetic resonance (EPR) spectroscopy has been used to monitor, in vivo, the uptake of the vanadyl ion by wheat plants.
The use of high levels of vanadyl ion produced, in the plant, high molecular weight complexes with EFR parameters similar to those obtained from. Eﬀects of sowing method on survival, ion uptake and yield of wheat (Triticum aestivum L.) in sodic soils and * School of Agricultural & Forest Sciences, University of Wales, Bangor, Gwynedd LL57 2UW, UK (Revised MS received 17 January ) SUMMARY Two separate experiments, in clay loam and loamy sand (prepared by mixing the.
-1 on wheat grain, yield components and leaf ion uptake of four Iranian wheat genotypes, i.e. Kouhdasht, Atrak, Rasoul and Tajan. Treatments were replicated three times in a completely randomized design in a factorial arrangement.
Desired salinity levels. Wheat (Triticum aestivum L.) is the third most vital cereal in the world after rice and maize .Therefore, wheat was selected to discuss cadmium uptake by plants in the current work. Almost 60% of the wheat produced globally is consumed as food , and wheat demand is globally expected to rise by an estimated 70% in the next few decades (–) as the human population increases and.
The net influx (uptake) rates of NO3−, NH4+, NO2−, and urea into roots of wheat (Triticum aestivumcv Yecora Rojo) seedlings from complete nutrient solutions containing all four compounds were monitored simultaneously. Although urea uptake was too slow to monitor, its presence had major inhibitory effects on the uptake of each of the other compounds.
Physical Mechanisms of Plant Ion Uptake. The soil environment to which a root is exposed can vary greatly within a field, where nutrient concentrations are often lower than the internal concentrations of the root cells (Barber, ; Lark et al., ).Therefore, plants have evolved mechanisms to passively facilitate and regulate ion transport down favorable electrochemical gradients as well.
'The Evaluation of uptake rate and distribution of nutrient ions in wheat (Triticum aestivum L.) under waterlogging condition'. Iranian Journal of Plant Physiology 8 (4), _____ Introduction Wheat (Triticum aestivum L.) is the first cereal grain consumed by humans around the globe.
(Anonymous, ). Wheat production. Then, wheat seedlings were exposed to two Cd concentrations ( and 5 μM) applied as CdCl 2 and two B concentrations ( and μM) applied as H 3 BO 3 in three replicates for 4 d. At harvest, wheat seedlings were separated into roots and shoots and dried at 80℃ for 3 d until constant weight for element content analysis.
Cox, W. & Reisenauer, H. Growth and ion uptake by wheat supplied nitrogen as nitrate, or ammonium, or both. Plant S – (). CAS Article Google Scholar. Ion uptake by wheat (Triticum aestivum VILL., Host) As a result of the reduced growth rate at the higher suction the rate of ion uptake was also reduced even though the concentrations in the plant tissue at the two suctions were the same.
Under the conditions of these experiments water availability affected plant growth apparently more by. It discusses the general aspects of ion transport at the membrane, root, and whole‐plant level.
It considers the mechanisms of absorption of iron (Fe), manganese, copper, zinc, boron, and nickel into the plant cell and analyzes the translocation of the specific micronutrients in the xylem and phloem.
Pathway of Malic Acid Synthesis in Response to Ion Uptake in Wheat and Lupin Roots: Evidence from Fixation of 13 C and 14 C Marianne Popp, C.
Barry Osmond, Roger E. Summons Plant Physiology Jun69 (6) ; DOI: /pp Although usually less dramatic, selective ion uptake is also a typical feature of higher plants. When plants are grown in a nutrient solution of limited volume, the external concentrations of ions change with time.
Uptake rates, especially for potassium and calcium, differ. The uptake and distribution of eight metallic elements were examined in wheat seedlings for a period of 12 d with a radioactive multitracer technique.
The radioactive nuclides of the seedlings were simultaneously determined by γ-ray spectrometry. All of the elements studied were taken up by the wheat seedlings and mainly accumulated in the roots. The nutrient uptake process.
Movement of nutrients to roots. For nutrient uptake to occur, the individual nutrient ion most be in position adjacent to the root. This process of positioning occurs through three basic ways. The root can "bump into" the ion as it grows through the soil.
This mechanism is. Wheat is consumed as a staple food by more than 36% of world population. Wheat provides nearly 55% of the carbohydrates and 20% of the food calories consumed globally.
The productivity of wheat is often adversely affected by salt stress which is associated with decreased germination percentage, reduced growth, altered reproductive behavior, altered enzymatic activity, disrupted photosynthesis.
inhibition of ion uptake Triticum aestivum Kurze Mitteilungen' Short Communications Isotopen-Laboratorium, Forschungsanstalt fiir Landwirtschaft, Braunschweig, Federal Republic of Germany Inhibition of Rb+ Absorption and Transport by Ethrel in Wheat Seedlings SESHADRI KANNAN With 3 figures Received Ap Mixtures of zeolite and phosphate rock react to release cations and anions into soil solution through dissolution and ion exchange.
These mixtures have the potential to serve as slow‐release sources.