Chemical structure and herbicidal activity of .ALPHA.,.ALPHA.-dialkylbenzyl containing thiolcarbamate compounds.

1989 ◽  
Vol 34 (1) ◽  
pp. 27-36
Author(s):  
Kaoru IKEDA ◽  
Kiyoshi SUGAYA
Keyword(s):  
Chemical Structure ◽  
Herbicidal Activity

Site of Action and Quantitative Structure-Activity Relationship of a Series of Herbicidal N-Aryl-Substituted 3,4-Dimethyl-2-hydroxy-5-oxo-2,5-dihydro-pyrrolones

1979 ◽  
Vol 34 (11) ◽  
pp. 1028-1031 ◽  
Author(s):  
G. P. Brugnoni ◽  
P. Moser ◽  
A. Trebst
Keyword(s):  
Chemical Structure ◽  
Electron Flow ◽  
Quantitative Structure Activity Relationship ◽  
Herbicidal Activity ◽  
Quantitative Structure ◽  
Photosynthetic Electron Flow ◽  
Acceptor Side ◽  
Structure Activity ◽  
Site Of Action ◽  
Relationship Of

Abstract Substituted phenyl-hydroxy pyrrolone derivatives are potential herbicides and are found to be effective inhibitors of photosynthetic electron flow in chloroplasts. Their site of inhibition is localized at the acceptor side of photosystem II similar to DCMU. They have no effect on photophosphoryla­tion. The correlation of photosynthetic acitivity to chemical structure is studied by comparing 36 derivatives. A clear dependence of inhibitory activity on lipophilicity is found. The dependence of herbicidal activity on chemical structure is more complex.

scholarly journals STIMULATING AND INHIBITING EFFECTS ON PLANTS OF SOME ACETYLENIC AMINO ALCOHOLS AND SALTS GUIDAMONACI

2021 ◽  
Vol 56 (1) ◽  
pp. 33-40
Author(s):  
E. Turgunov ◽  
◽  
M.F. Faizullaeva ◽  
K.Kh. Darmaganbet ◽  
L.A. Zhusupova ◽  
...  
Keyword(s):  
Biological Activity ◽  
Chemical Composition ◽  
Chemical Structure ◽  
Biological Effects ◽  
Amino Alcohols ◽  
Herbicidal Activity ◽  
Ammonium Salts ◽  
Wheat Coleoptile ◽  
High Biological Activity

The herbicidal effects of aminopentinols, aminohexinols and some synthesized acetylene aminospirths, hydrochloride compounds, as well as the biological activity of their effects in relation to such important crops as cotton and corn were studied. During pretreatment of seeds and weeds, it was found that the studied drugs show different herbicidal activity in relation to annual dicotyledonous and annual grain weeds, depending on their chemical composition and dosage. It has been established that many ammonium salts of acetylene amino alcohols have high biological activity and that their use, depending on the chemical structure and quantity, has biological effects. To determine the biological activity of the studied drugs, the authors used a well-known method of biotestylation in wheat coleoptile. Preemergence treatment by solutions of abovementioned preparates in dependence on their chemical structure and dose have rendered different action on the growth leguminous (nut) and cereals (wheat, sorghum) plants.

Relation of chemical structure and herbicidal activity in dimethylpropynylbenzamides

1971 ◽  
Vol 19 (3) ◽  
pp. 417-421 ◽  
Author(s):  
Colin. Swithenbank ◽  
Patrick J. McNulty ◽  
Kenneth L. Viste
Keyword(s):  
Chemical Structure ◽  
Herbicidal Activity

scholarly journals Chemical Structure and Herbicidal Activity of 1, 2, 4-Triazole-carboxamide Derivatives.

1999 ◽  
Vol 44 (2) ◽  
pp. 139-143 ◽  
Author(s):  
Mitsuru Kanzaki ◽  
Masaki Takeuchi ◽  
Norio Shirakawa
Keyword(s):  
Chemical Structure ◽  
Herbicidal Activity

Inelastic Electron-Matter Interactions

1978 ◽  
Vol 36 (3) ◽  
pp. 259-267
Author(s):  
J. Silcox
Keyword(s):  
Electron Microscope ◽  
Energy Loss ◽  
Chemical Structure ◽  
Inelastic Electron ◽  
Primary Concern ◽  
Unique Probe ◽  
Introductory Paper ◽  
Elastic Processes ◽  
Experimental Level ◽  
Inelastic Processes

In this introductory paper, my primary concern will be in identifying and outlining the various types of inelastic processes resulting from the interaction of electrons with matter. Elastic processes are understood reasonably well at the present experimental level and can be regarded as giving information on spatial arrangements. We need not consider them here. Inelastic processes do contain information of considerable value which reflect the electronic and chemical structure of the sample. In combination with the spatial resolution of the electron microscope, a unique probe of materials is finally emerging (Hillier 1943, Watanabe 1955, Castaing and Henri 1962, Crewe 1966, Wittry, Ferrier and Cosslett 1969, Isaacson and Johnson 1975, Egerton, Rossouw and Whelan 1976, Kokubo and Iwatsuki 1976, Colliex, Cosslett, Leapman and Trebbia 1977). We first review some scattering terminology by way of background and to identify some of the more interesting and significant features of energy loss electrons and then go on to discuss examples of studies of the type of phenomena encountered. Finally we will comment on some of the experimental factors encountered.

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