ALLELOPATHIC CHANGES OF FAGUS ORIENTALIS L. UNDER INFLUENCE OF RECREATION

2020 ◽  
Author(s):  
Виталий Георгиевич Щербина
Keyword(s):  
Allelopathic Effect ◽  
Spatial Change ◽  
Fagus Orientalis ◽  
Single Maximum ◽  
Phytogenic Field

Проводится оценка изменений аллелопатической составляющей фитогенного поля бука восточного под воздействием рекреационной нагрузки. Методом биотестов определено, что воздействие разовой предельно допустимой рекреационной нагрузки отражается на пространственном изменении величины аллелопатического влияния в зонах фитогенного поля. Changes in the allelopathic component of the phytogenic field of the beech eastern under the influence of recreational load were estimated. Using the biotest method, it was found that the influence of a single maximum permissible recreational load affects the spatial change in the magnitude of the allelopathic effect in the zones of the phytogenic field.

Allelopathic effect of cumin (Cuminum cyminum L.) on seed germination of three weeds

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
A Soleymanifard ◽  
R Naseri ◽  
A Mirzaei ◽  
H Naserirad
Keyword(s):  
Seed Germination ◽  
Allelopathic Effect ◽  
Cuminum Cyminum

Changes in the Population Density of Pathogenic Microorganisms in Response to the Allelopathic Effect of Thypha Latifolia

2014 ◽  
Vol 1 (1) ◽  
pp. 31-36 ◽  
Author(s):  
O. Zhukorskiy ◽  
O. Gulay ◽  
V. Gulay ◽  
N. Tkachuk
Keyword(s):  
Cell Density ◽  
Allelopathic Effect ◽  
Pathogenic Microorganisms ◽  
Sterile Water ◽  
Erysipelothrix Rhusiopathiae ◽  
Pathogenic Leptospira ◽  
Favorable Conditions ◽  
And Control ◽  
The Impact ◽  
Control Samples

Aim. To determine the response of the populations of Erysipelothrix rhusiopathiae and Leptospira interrogans pathogenic microorganisms to the impact of broadleaf cattail (Thypha latifolia) root diffusates. Methods. Aqueous solutions of T. latifolia root diffusates were sterilized by vacuum fi ltration through the fi lters with 0.2-micron pore diameter. The experimental samples contained cattail secretions, sterile water, and cultures of E. rhusiopathiae or L. interrogans. The same amount of sterile water, as in the experimental samples, was used for the purpose of control, and the same quantity of microbial cultures was added in it. After exposure, the density of cells in the experimental and control samples was determined. Results. Root diffusates of T. latifolia caused an increase in cell density in the populations of E. rhusiopathiae throughout the whole range of the studied dilutions (1:10–1:10000). In the populations of the 6 studied serological variants of L. interrogans spirochetes (pomona, grippotyphosa, copenhageni, kabura, tarassovi, canicola), the action of broadleaf cattail root diffusates caused the decrease in cell density. A stimulatory effect was marked in the experimental samples of the pollonica serological variant of leptospira. Conclusions. The populations of E. rhusiopathiae and L. interrogans pathogenic microorganisms respond to the allelopathic effect of Thypha latifolia by changing the cell density. The obtained results provide the background to assume that broadleaf cattail thickets create favorable conditions for the existence of E. rhusiopathiae pathogen bacteria. The reduced cell density of L. interrogans in the experimental samples compared to the control samples observed under the infl uence of T. latifolia root diffusates suggests that reservoirs with broadleaf cattail thickets are marked by the unfavorable conditions for the existence of pathogenic leptospira (except L. pollonica).

Der fliegende Pfeil

2010 ◽  
Vol 55 (1) ◽  
pp. 69-89
Author(s):  
Katharina Münchberg
Keyword(s):  
Lyric Poetry ◽  
Modern Art ◽  
Sensory Perception ◽  
Spatial Change ◽  
Modern Age ◽  
Time Space

Die Kunst der Moderne, insbesondere die Lyrik, entwickelt eine eigene ästhetische Konzeption der Bewegung, die mit der klassischen Vorstellung der Bewegung als räumlicher Veränderung eines Körpers in der Zeit bricht. Baudelaires À une Passante, Rimbauds Bateauivre und Paul Valérys Le Cimetière marin sind drei paradigmatische Texte der französischen Moderne, in denen Bewegung als zeiträumliches Kontinuum reflektiert und in der Dynamik der Sprache materialisiert wird. Die moderne Kunst, so erweist sich, ist selbst Bewegung und stiftet Bewegung. Sie wird zu einer Kunst des Werdens, nicht der Substanz, zu einer Kunst der reinen sinnlichen Wahrnehmung, nicht des Begriffes, zu einer Kunst der diskontinuierlichen Erlebnisse, nicht der Erfahrung.<br><br>The art of the modern age, particularly the lyric poetry, develops an own aesthetic conception of the movement which breaks with the classic idea of the movement as a spatial change of a body in time. Baudelaires À une Passante, Rimbauds Bateau ivre and Paul Valérys Le Cimetière Marin are three paradigmatic texts of the French modern age, in which movement is reflected as a time-space-continuum and materialized in the dynamic of language. Modern art is itself movement and causes movement. It becomes an art of the development, not sub- stance, an art of pure sensory perception, not concept, an art of discontinuous adventures, not experience.

Allelopathic effect of potato on Orabanche aegyptiaca Pers seed germination

2013 ◽  
Vol 21 (3) ◽  
pp. 333
Author(s):  
Zhong WANG ◽  
YongQing MA ◽  
JinNan JIA ◽  
ShuQi DONG ◽  
XiaoXin YE
Keyword(s):  
Seed Germination ◽  
Allelopathic Effect

scholarly journals Plant Extract Valorization of Melissa officinalis L. for Agroindustrial Purposes through Their Biochemical Properties and Biological Activities

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Mouna Souihi ◽  
Rayda Ben Ayed ◽  
Imen Trabelsi ◽  
Marwa Khammassi ◽  
Nadia Ben Brahim ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Biological Activities ◽  
Biochemical Properties ◽  
Major Constituent ◽  
Allelopathic Effect ◽  
Melissa Officinalis ◽  
Lemon Balm ◽  
The North ◽  
Germacrene D ◽  
Leaf Essential Oil

Lemon balm (Melissa officinalis L.) is one of the rare medicinal plants in Tunisia. It was found only in two sites in the north of Tunisia with a small number of plants. The study of germination under the NaCl and PEG effect showed that Tunisian lemon balm seeds were sensitive to saline and osmotic stress. Morphological and biochemical characterizations of Tunisian M. officinalis were performed. Results showed that the Tunisian populations presented plants with long, broad leaves and weak branching. The major constituent in leaf essential oil was germacrene-D with a percentage ranging from 29.17 to 24.6%, and the major fatty acids were polyunsaturated fatty acids, linoleic acid, ranging from 73.93 to 66.74%. The phenolic content of M. officinalis extract varied significantly among origins which could explain the high variation in antiradical scavenging activity. The evaluation of allelopathic activities showed that the extract of the lemon balm leaves presented an allelopathic effect with the majority of the tested seeds.

scholarly journals Allelopathic Effect of Serphidium kaschgaricum (Krasch.) Poljak. Volatiles on Selected Species

Plants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 495
Author(s):  
Shixing Zhou ◽  
Toshmatov Zokir ◽  
Yu Mei ◽  
Lijing Lei ◽  
Kai Shi ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Volatile Oil ◽  
Amaranthus Retroflexus ◽  
Allelopathic Effect ◽  
Chemical Profile ◽  
Volatile Oils ◽  
Phytotoxic Activity ◽  
Volatile Organic ◽  
First Time ◽  
Stem Leaf

The chemical profile and allelopathic effect of the volatile organic compounds (VOCs) produced by a dominant shrub Serphidium kaschgaricum (Krasch.) Poljak. growing in northwestern China was investigated for the first time. Serphidium kaschgaricu was found to release volatile compounds into the surroundings to affect other plants’ growth, with its VOCs suppressing root elongation of Amaranthus retroflexus L. and Poa annua L. by 65.47% and 60.37% at 10 g/1.5 L treatment, respectively. Meanwhile, volatile oils produced by stems, leaves, flowers and flowering shoots exhibited phytotoxic activity against A. retroflexus and P. annua. At 0.5 mg/mL, stem, leaf and flower oils significantly reduced seedling growth of the receiver plants, and 1.5 mg/mL oils nearly completely prohibited seed germination of both species. GC/MS analysis revealed that among the total 37 identified compounds in the oils, 19 of them were common, with eucalyptol (43.00%, 36.66%, 19.52%, and 38.68% in stem, leaf, flower and flowering shoot oils, respectively) and camphor (21.55%, 24.91%, 21.64%, and 23.35%, respectively) consistently being the dominant constituents in all oils. Eucalyptol, camphor and their mixture exhibited much weaker phytotoxicity compared with the volatile oils, implying that less abundant compounds in the volatile oil might contribute significantly to the oils’ activity. Our results suggested that S. kaschgaricum was capable of synthesizing and releasing allelopathic volatile compounds into the surroundings to affect neighboring plants’ growth, which might improve its competitiveness thus facilitate the establishment of dominance.

scholarly journals The concept of the phytogenic field: theory, research experience and practical significance

2020 ◽  
Vol 614 ◽  
pp. 012164
Author(s):  
Z Shamsutdinov ◽  
Sh Ubaydullaev ◽  
N Shamsutdinov ◽  
B Mirzaev ◽  
F Mamatov ◽  
...  
Keyword(s):  
Field Theory ◽  
Practical Significance ◽  
Research Experience ◽  
Phytogenic Field ◽  
Theory Research
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