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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Allelopathic effect of Azadirachta indica L. on the germination of Abelmoschus esculentus L.

100%
Vaithiyanathan T., Soundari M., Rajesh M., Sankar Ganesh K., Sundaramoorthy P.
International Letters of Natural Sciences
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2014
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tom 10
The chemical compounds have been reported to be exuded by plants and their inhibitory effects of other plants. The research work was carried out to study the allelopathic effect of root, bark and leaf extracts of Azadirachta indica L. on the seed germination of Abelmoschus esculentus L. Germination studies were conducted in laboratory, the bhendi seeds treated with the root, bark and leaf extracts of Neem. On the seventh day the morphological parameters, photosynthetic pigment and biochemical contents were analysed. The result showed that the rate of germination of bhendi decreased in all Azadirachta indica L. extracts. The reduction in biochemical contents of bhendi was also noted. The highest rate of germination was observed in control (distilled water) treatment and the highest rate of inhibition was observed in root extract followed by bark and leaf extracts.
2

Nitrogen deposition influences the allelopathic effect of an invasive plant on the reproduction of a native plant: Solidago canadensis versus Pterocypsela laciniata

86%
Wang C., Liu J., Xiao H., Zhou J., Du D.
Polish Journal of Ecology
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2017
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tom 65
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nr 1
This study aims to gain insights into the allelopathic effects (by using leaf extracts) of the notorious invasive Solidago canadensis L. on seed germination of the associated Pterocypsela laciniata (Houtt.) C. Shih under different nitrogen (N) forms added: inorganic (NO3--N and NH4 -N), organic (urea-N), and mixed N (a mixture of the three N forms at 1:1:1 ratio). Among the two used concentrations of S. canadensis leaf extracts the higher exhibited inhibitory allelopathic effects on seedling height and biomass, germination potential, germination index, and vigor index of P. laciniata. N demonstrated positive effects on seed germination of P. laciniata. The effects of mixed and organic N on the seedling biomass of P. laciniata were more pronounced than those of inorganic N and control treatment. The vigor index of P. laciniata under mixed N was significantly higher than those under single N form and control treatment. Thus, organic and mixed N showed higher ecological effects on seed germination of P. laciniata than inorganic and single N form. All N forms could alleviate the inhibitory allelopathic effects of S. canadensis on seed germination of P. laciniata. Overall, the inhibitory allelopathic impact of S. canadensis on seed germination of native species may be attenuated under increased and diverse N deposition, thus it could prevent its further invasion.
3

Allelopathic effects and secondary metabolites in life yew (Taxus spp.)

86%
Filova A., Rovna K., Kovar M.
Acta Physiologiae Plantarum
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2007
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tom 29
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nr 1 Suppl.
4

Allelopathic effects of wood small-reed (Calamagrostis epigejos) on germination and growth of selected grassland species

72%
Pruchniewicz D., Halarewicz A.
Polish Journal of Ecology
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2019
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tom 67
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nr 2
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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The allelopathic effect of Taraxacum officinale F.G. Wigg on the seeds germination and initial growth of Lolium westerwoldicum R.Br.

72%
Jankowska J., Ciepiela G. A., Sosnowski J., Kolczarek R., Jankowski K.
Acta Agrobotanica
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2009
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tom 62
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nr 2
The common dandelion (Taraxacum officinale F.H. Wigg) is a perennial plant often found in large concentrations in the sward of natural meadows. This species expands quickly, displacing other species. In literature there is a lack of data relating to the effect of common dandelion on plants growing in its vicinity. It is also not known why this species creates large clusters. Perhaps it competes with different plants through the allelopathic effect. Hence, the aim of this study was to determine the influence of water extracts from leaves and roots of common dandelion (Taraxacum officinale) as well as soil extracts from the root layer of this species on seed germination and the initial growth of Lolium westerwoldicum R.Br. The investigated material comprised leaves and roots of Taraxacum officinale. The germination biotest most often used in experiments was applied. The seeds germination energy of westerwolds ryegrass was most inhibited by plant extracts prepared from roots and leaves of Taraxacum officinale. The germination ability of seeds of Lolium westerwoldicum was the highest in the treatments in which soil extracts were applied; however, the value of this feature was limited to a larger extent by the plant extracts from leaves of Taraxacum officinale than from roots. Higher concentrations of both soil and plant solutions had an inhibitory effect both on root growth and the growth of the leaf sheath and leaves of westerwolds ryegrass. The results of the tested parameters can confirm the allelopathic effect of Taraxacum officinale on germination and initial growth of Lolium westerwoldicum, and especially that of extracts prepared from leaves.
6

Constitutive allelochemicals from Stratiotes aloides L.affect both biomass and community structure of phytoplankton

72%
Kufel L., Pasztaleniec A., Czapla G., Strzalek M.
Polish Journal of Ecology
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2007
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tom 55
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nr 2
The paper presents the results of a study on allelopathic effect of extracts from Stratiotes aloides on natural lake phytoplankton communities grown outdoor in 40 l containers under natural light conditions. The water and plants were taken from an oxbow lake in spring (when S. aloides plants were submerged) and in summer (when plants were floating on lake water surface). Water extracts were prepared from fresh healthy leaves obtained on both sampling occasions. Control containers were supplemented with N and P in amounts similar to those introduced to experimental containers with macrophyte extracts. That way the experimental set up excluded the possibility of phytoplankton limitation by nutrients. Under such conditions the extracts from S. aloides strongly reduced phytoplankton biomass measured as the concentration of chlorophyll a (from 370 to 141 mg chl. a m⁻³ in spring and from 266 to 50 mg chl. a m⁻³ in summer). The inhibition of phytoplankton growth was indirectly confirmed by higher concentrations of available nutrients in experimental versus control containers. The extracts affected also the spring phytoplankton community structure by selective inhibition of diatoms and, to a less extent, of green algae and Cryptophyceae. Similar response of phytoplankton biomass to extracts obtained from submerged and floating S. aloides might suggest that allelochemicals were the constitutive part of macrophyte tissue and their production was not induced by competition between macrophyte and algae.
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Allelopathic effect of lamiaceous weeds on seed germination and early growth of aromatic rice (Oryza sativa‘Gobindobhog’)

58%
Oraon S., Mondal S.
Acta Agrobotanica
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2021
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tom 74
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nr 1
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Allelopathic effect of organic mulches on vegetable germination and early development

58%
Judaugiene D., Sinkeviciene A., Pupaliene R., Ninkovic V., Kriauciuniene Z.
Acta Scientiarum Polonorum. Hortorum Cultus
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2018
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tom 17
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nr 3
Plants, as well as their residues (mulches), release physiologically active substances (allelochemicals), which may affect plant germination, development, and productivity. In this study we investigated the allelopathic effects of aqueous extracts of organic mulches (winter wheat straw, peat, sawdust, and gramineous grass) at different concentrations on germination and early growth of radish (Raphanus sativus L.), carrot (Daucus sativus Röhl.), and lettuce (Lactuca sativa L.). It was found, that the strongest negative effect on the germination and shoot and root development of investigated vegetables was with the highest concentration (1 : 10) of the grass aqueous extract. Peat mulch aqueous extracts had the least negative impact on all vegetable seed germination. Straw and peat mulches stimulated the early growth of R. sativus shoots, but there was a negative affect on D. sativus shoot development. The aqueous extracts of various organic mulches had negative effects on R. sativus, while mostly positive effects found on L. sativa root development.
9

Allelopathic effects of some weeds on rhizosphere algae at El-Kharga Oasis (New Valley), Egypt

51%
Hifney A. F., Adam M. S., Ghareib G., Issa A. A.
Journal of Biology and Earth Sciences
|
2013
|
tom 03
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nr 1
10
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Autoallelopathic and allelopathic influence of aqueous winter-cereal extracts

44%
Carvalho de M., Halecki W., Mozdzen K., Synowiec A.
Acta Agrobotanica
|
2022
|
tom 75
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nr 1
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