Root and Shoot Development on Cuttings of Basswood (Tiliaamericana L.) as Affected by Auxin Treatments and Size of Cuttings

1974 ◽  
Vol 4 (2) ◽  
pp. 246-249 ◽  
Author(s):  
W. A. G. Morsink ◽  
V. G. Smith
Keyword(s):  
Aqueous Solution ◽  
Root Growth ◽  
Aqueous Solutions ◽  
Indoleacetic Acid ◽  
Shoot Development ◽  
Naphthaleneacetic Acid ◽  
Distilled Water ◽  
Water Control ◽  
Indolebutyric Acid

A population of saplings of basswood was studied to determine the effect of size of cutting and a 2-min basal dip in an aqueous solution of either indolebutyric acid (IBA), indoleacetic acid (IAA), or naphthaleneacetic acid (NAA) on root and shoot development of softwood cuttings grown under intermittent mist. Cuttings were 12–60 cm long, and treatments were: distilled water control; and aqueous solutions of auxin at levels of 1000, 5000, 10 000, and 20 000 p.p.m. Significant increases in the growth of roots were obtained with 5000 and 10 000 p.p.m. of IBA. Significant increases in root growth were also obtained with increasing sizes of cuttings.

REGENERATION OF PLANTLETS FROM HYPOCOTYL DERIVED CALLUS OF MORUS ALBA

1995 ◽  
Vol 43 (3) ◽  
pp. 259-262 ◽  
Author(s):  
K. Kathiravan ◽  
A. Shajahan ◽  
A. Ganapathi
Keyword(s):  
Indoleacetic Acid ◽  
Adventitious Shoot ◽  
Morus Alba ◽  
Naphthaleneacetic Acid ◽  
Ms Medium ◽  
Indolebutyric Acid ◽  
Shoot Buds ◽  
Adventitious Shoot Buds ◽  
Hypocotyl Segments

Plantlets were regenerated from hypocotyl callus of Morus alba cv. MR2. Calli were established from hypocotyl segments on Murashige and Skoog (MS) medium supplemented with indoleacetic acid (0.5 mg/1) and benzyladenine (BA) (0.5 mg/1). They were transferred to MS medium with different concentrations of naphthaleneacetic acid NAA and BA for four weeks. Adventitious shoot buds were observed by transferring callus onto fresh Linsmaier and Skoog (LS) medium containing NAA (0.5 mg/1) and BA (0.75 mg/1). Shoots produced in vitro were rooted on MS medium with indolebutyric acid (0.75 mg/1).

STUDIES ON THE FORMATION OF VITAMIN C IN SLICES OF POTATO TISSUE

1952 ◽  
Vol 30 (6) ◽  
pp. 665-673 ◽  
Author(s):  
E. A. M. Asselbergs ◽  
F. J. Francis
Keyword(s):  
Vitamin C ◽  
Direct Relationship ◽  
Indoleacetic Acid ◽  
Physiological Condition ◽  
Potassium Cyanide ◽  
Naphthaleneacetic Acid ◽  
Distilled Water ◽  
Potato Tissue ◽  
Enzyme Systems ◽  
Potato Slices

When slices of potato tissue are stored for two days at 23 °C. in moist chambers or in aerated distilled water, the vitamin C content increases 100-300% as measured by the method of Roe et al. The increase does not occur in slices from freshly harvested potatoes. The physiological condition of the potatoes at the time of the experiment is important in determining the amount of increase in slices from potatoes stored for several months. Experiments with auxins and mannitol solutions show that there is no direct relationship between the process of water uptake and vitamin C formation. Solutions of indoleacetic acid and naphthaleneacetic acid increase the amount of vitamin formed. The results of experiments with potassium cyanide, sodium azide, malachite green, 8-hydroxyquinoline, sodium diethyldithiocarbamate and 2,4-dinitrophenol suggest that the formation of vitamin C is not directly related to any of the enzyme systems inhibited by the above chemicals. Infiltration of potato slices with solutions of fumaric and malic acid results in an increased formation of vitamin C as compared with the water controls.

Promotion by tryptophan of growth and root formation in lowbush blueberry pericarp callus cultures

1980 ◽  
Vol 58 (8) ◽  
pp. 881-885 ◽  
Author(s):  
Nancy L. Nickerson
Keyword(s):  
Growth Rates ◽  
Root Formation ◽  
Indoleacetic Acid ◽  
Callus Cultures ◽  
Callus Growth ◽  
Dichlorophenoxyacetic Acid ◽  
Naphthaleneacetic Acid ◽  
Indolebutyric Acid ◽  
Lowbush Blueberry ◽  
2,4 Dichlorophenoxyacetic Acid

Lowbush blueberry (Vaccinium angustifolium Ait.) pericarp callus grew slowly and formed normal tetraploid roots on Nitsch's medium containing L-tryptophan and kinetin. Both growth and rooting depended on the levels of these two substances in the medium. Rooting declined but callus growth rates changed little over successive subcultures. When tryptophan was replaced by indoleacetic acid, indolebutyric acid, 2,4-dichlorophenoxyacetic acid, or naphthaleneacetic acid, callus growth rates increased but no roots formed. Tryptophan medium did not support callus growth or induce rooting unless the tryptophan was autoclaved with the rest of the medium; thus suggesting that an active substance is produced by reaction of the tryptophan with some other constitutent(s) of the medium during heating.

Effect of thermal history of aqueous solutions of KCl on the metastable zone width

1984 ◽  
Vol 49 (3) ◽  
pp. 559-569 ◽  
Author(s):  
Jaroslav Nývlt
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Thermal History ◽  
Equilibrium Solubility ◽  
Metastable Zone Width ◽  
Zone Width ◽  
Preceding Experiment ◽  
History Of ◽  
Metastable Zone ◽  
The Given

The metastable zone width of an aqueous solution of KCI was measured as a function of the time and temperature of overheating above the equilibrium solubility temperature. It has been found that when the experiments follow close upon one another, the parameters of the preceding experiment affect the results of the experiment to follow.The results are interpreted in terms of hypotheses advanced in the literature to account for the effect of thermal history of solution. The plausibility and applicability of these hypotheses are assessed for the given cause of aqueous solution of a well soluble electrolyte.

scholarly journals I. Thermo-electric behaviour of aqueous solutions with mercurial electrodes

1879 ◽  
Vol 29 (196-199) ◽  
pp. 472-482 ◽  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Internal Diameter ◽  
Thermo Electric ◽  
Thin Glass ◽  
Mercury Surface

In order to investigate this subject, I devised and constructed the following apparatus :—A and B are two thin glass basins, 81 millims. internal diameter (= 5,153 sq. millims. of mercury surface), and 6·0 centims. deep; each containing a layer of mercury about 1·0 centim. deep, covered by a layer, about 3 centims. deep, of the aqueous solution to be examined.

scholarly journals Meta-studtite stability in aqueous solutions. Impact of HCO3−, H2O2 and ionizing radiation on dissolution and speciation

2021 ◽  
Author(s):  
Junyi Li ◽  
Zoltán Szabó ◽  
Mats Jonsson
Keyword(s):  
Aqueous Solution ◽  
Ionizing Radiation ◽  
Aqueous Solutions ◽  
Carbonate Complexes ◽  
C Nmr

Four different uranyl-(peroxide)-carbonate complexes were identified during studtite and meta-studtite dissolution in aqueous solution containing 10 mM HCO3− by 13C NMR.

scholarly journals Visualization of microwave near-field distribution in sodium chloride and glucose aqueous solutions by a thermo-elastic optical indicator microscope

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zhirayr Baghdasaryan ◽  
Arsen Babajanyan ◽  
Levon Odabashyan ◽  
Jung-Ha Lee ◽  
Barry Friedman ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Field Distribution ◽  
Near Field ◽  
Absorption Properties ◽  
Novel Approach ◽  
Concentration Changes ◽  
Biological Liquids ◽  
Optical Indicator ◽  
Distribution Intensity

AbstractIn this study, a new optical method is presented to determine the concentrations of NaCl and glucose aqueous solutions by using a thermo-elastic optical indicator microscope. By measuring the microwave near-field distribution intensity, concentration changes of NaCl and glucose aqueous solutions were detected in the 0–100 mg/ml range, when exposed to microwave irradiation at 12 GHz frequency. Microwave near-field distribution intensity decreased as the NaCl or glucose concentration increased due to the changes of the absorption properties of aqueous solution. This method provides a novel approach for monitoring NaCl and glucose in biological liquids by using a CCD sensor capable of visualizing NaCl and glucose concentrations without scanning.

Fabrication of monodisperse polypyrrole/SBA-15 composite for the selective removal of Cr(Ⅵ) from aqueous solutions

2021 ◽  
Author(s):  
Liang Wang ◽  
Peng Gao ◽  
Mengxin Liu ◽  
Ziqing Huang ◽  
Shixia Lan ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Adsorption Process ◽  
In Situ Polymerization ◽  
Selective Removal ◽  
Factors Affecting

Monodisperse polypyrrole/SBA-15 composite (PPy/SBA-15) was fabricated by in-situ polymerization and used for Cr(Ⅵ) adsorption from aqueous solution. PPy/SBA-15 was characterized by numerous approaches. Factors affecting the Cr(Ⅵ) adsorption process included...

Penetration Dynamics of Solid Particles into Liquids High-Speed Experimental Results and Modelling

2005 ◽  
Vol 473-474 ◽  
pp. 429-434 ◽  
Author(s):  
Olga Verezub ◽  
György Kaptay ◽  
Tomiharu Matsushita ◽  
Kusuhiro Mukai
Keyword(s):  
Contact Angle ◽  
Particle Size ◽  
Aqueous Solutions ◽  
Particle Velocity ◽  
Weber Number ◽  
High Speed ◽  
Solid Particles ◽  
Bulk Liquid ◽  
Distilled Water ◽  
Critical Weber Number

Penetration of model solid particles (polymer, teflon, nylon, alumina) into transparent model liquids (distilled water and aqueous solutions of KI) were recorded by a high speed (500 frames per second) camera, while the particles were dropped from different heights vertically on the still surface of the liquids. In all cases a cavity has been found to form behind the solid particle, penetrating into the liquid. For each particle/liquid combination the critical dropping height has been measured, above which the particle was able to penetrate into the bulk liquid. Based on this, the critical impact particle velocity, and also the critical Weber number of penetration have been established. The critical Weber number of penetration was modelled as a function of the contact angle, particle size and the ratio of the density of solid particles to the density of the liquid.

Shear degradation resistance of star poly(ethyleneimine) - polyacrylamides during elongational flow

e-Polymers ◽  
2011 ◽  
Vol 11 (1) ◽  
Author(s):  
Ming Duan ◽  
Shenwen Fang ◽  
Liehui Zhang ◽  
Fuxiao Wang ◽  
Peng Zhang ◽  
...  
Keyword(s):  
Shear Rate ◽  
Aqueous Solutions ◽  
Relative Viscosity ◽  
Reduction Rate ◽  
Elongational Flow ◽  
Exponential Dependence ◽  
Distilled Water ◽  
Shear Stability ◽  
Low Viscosity ◽  
Shear Degradation

AbstractAn experimental study of the flow-induced scission behaviour of four star hydrolyzed polyacrylamides (HPMA) with different arms during planar elongational flow in a cross-slot flow cell is described. The results showed that the shear stability of linear HPAM in distilled water was not essentially different from star HPAM. Polymer scission was not observed in either system in a shear rate range from 20,000 to 100,000s-1, which can be attributed to the strong polyelectrolyte behaviour of HPAM in distilled water. However, at the same shear rate, the star HPAMs exhibited superior shear stability in comparison to the linear HPAMs in aqueous solutions containing NaCl (CNaCl=0.2-1.0%wt) and, in particular, the initial reduction rate of relative viscosity (R) decreased with the degree of branching of the HPAMs. In addition, it was found that the R of five HPAMs in NaCl aqueous solutions exhibited an exponential dependence on shear rate, in which the coefficient C1 can be used to quantitatively evaluate shear stability. In star HPAM NaCl aqueous solutions, the increase of R with shear rate is very likely due to the decrease of the hydrodynamic radius (Rh) of these HPAMs, while the increase of R with NaCl concentrations can be attributed to the relatively low viscosity of these polymers at high NaCl concentrations.

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