scholarly journals Determination of Hydraulic and Osmotic Properties of Soybean Root Systems

1977 ◽  
Vol 59 (6) ◽  
pp. 1013-1020 ◽  
Author(s):  
Edwin L. Fiscus
Keyword(s):  
Root Systems ◽  
Soybean Root ◽  
Osmotic Properties

A biochemical study of BAS 517 using excised corn and soybean root systems

Weed Science ◽  
1999 ◽  
Vol 47 (1) ◽  
pp. 28-36
Author(s):  
Hwei-Yiing Li ◽  
Chester L. Foy
Keyword(s):  
Root System ◽  
Biochemical Study ◽  
Lipid Fraction ◽  
Root Systems ◽  
Water Soluble ◽  
Root Tips ◽  
Soybean Root ◽  
Corn Roots ◽  
Tracer Techniques ◽  
High Degree

The mode of action of BAS 517 in a susceptible plant species, corn, was investigated using an excised root system and14C-tracer techniques. The root system of a tolerant species, soybean, was used for comparison. When UL-14C- glucose was used as a precursor,14C incorporation into lipids was reduced in BAS 517-treated corn roots, although14C incorporation from UL-14C-glucose into lipids was relatively low. Inhibition of14C incorporation into water-soluble compounds was not definite because of a high degree of variability. Using14C-acetate as a precursor, 49, 43, and 34% of the recovered radioactivity was found in the lipid fractions of root tips treated with 0, 1.0, and 10 μM BAS 517, respectively. In nontreated soybean root tips, 47% of the recovered radioactivity was found in the lipid fraction compared to 49% in root tips treated with 10 μM BAS 517. Further analysis of lipids showed that BAS 517 inhibited the incorporation of14C from14C-acetate into phosphatidylethanolamine, a phospholipid, whereas the labeling of sterols in treated corn roots was not adversely affected. Acetyl CoA carboxylase extracted from root systems of corn and soybean showed different sensitivity to BAS 517, suggesting its role as the herbicide target site and as a basis for the selectivity.

scholarly journals Penetration of Soybean Root Systems by Abscisic Acid Isomers

1982 ◽  
Vol 69 (6) ◽  
pp. 1350-1352 ◽  
Author(s):  
Albert H. Markhart
Keyword(s):  
Abscisic Acid ◽  
Root Systems ◽  
Soybean Root

Cryomicroscopic determination of the membrane osmotic properties of human monocytes at subfreezing temperatures

Cryobiology ◽  
1991 ◽  
Vol 28 (4) ◽  
pp. 391-399 ◽  
Author(s):  
Cameron McCaa ◽  
K.R. Diller ◽  
S.J. Aggarwal ◽  
T. Takahashi
Keyword(s):  
Human Monocytes ◽  
Osmotic Properties

Localization of micropores in polymer films

1978 ◽  
Vol 36 (1) ◽  
pp. 490-491
Author(s):  
W.F. Geymayer ◽  
F. Grasenick
Keyword(s):  
Polymer Films ◽  
Pore Volume ◽  
Porous Polymer ◽  
The Other ◽  
Monomer Mixture ◽  
Interesting Problem ◽  
Sensitive Material ◽  
High Importance ◽  
Osmotic Properties

For studying corrosion problems, for the understanding of osmotic processes or generally for the investigation of reactions inside porous polymer films the knowledge of the frequency and the size of the pores as well as the registration of the course of penetrating pores is of high importance for the determination of the active pore-volume.In most of these processes at least one of the reactants is a fluid being in contact with the diaphragm through which it reacts with the medium on the other side. The fluid often begins to swell the polymer layer, a process that may even be necessary to develop the osmotic properties of the membrane.Thus it was an interesting problem, to find a way of detecting the pores in a possibly swollen organic diaphragm without altering it. Drying the specimens completely disturbs the original conditions, chemical dehydration with subsequent soaking the pores with a suitable monomer-mixture causes strong changes of the sensitive material by uncontrolled shrinkag.

scholarly journals Influence of participation of root system and earth on slope stability

2010 ◽  
Vol 58 (2) ◽  
pp. 229-234
Author(s):  
Michaela Tvrzníková
Keyword(s):  
Slope Stability ◽  
Root System ◽  
Woody Plants ◽  
Root Systems ◽  
Root Cohesion ◽  
Root Strength

Plan for stabilization of endangered slopes of reservoirs often receives little attention during project stage of preparation of water structures. Many of the potentially endangered slopes can be preventively stabilized with the use of vegetational or biotechnological stabilizations.The article deals with the problem of determining value of root cohesion as one of the important factors in participation of root systems of woody plants in earthfill bodies. It is an analysis of impact of various factors which influence the functionality of the root system within the process of improving the slope stability.Mainly foreign authors dealing with theoretical as well as practical determination of root strength va­lues are introduced in the article.

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