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 (ə-lē-lŏp′ə-thē, ăl′ə-)
A usually negative effect on the growth or development of an organism of one species, caused by a chemical released by an organism of another species. Usually used of plants.

[Greek allēlōn, reciprocally (from allos, another; see al- in Indo-European roots) + -pathy.]

al·le′lo·path′ic (ə-lē′lə-păth′ĭk, ə-lĕl′ə-) adj.


relating to or characterized by allelopathy
References in periodicals archive ?
Allelopathic relationships may occur in a positive or negative manner through the production of chemical compounds known as allelochemicals.
Its aggressive growth, in addition to allelopathic properties, results in displacement of native vegetation and changes in plant community structure (Morton 1978; Morgan & Overholt 2005).
In addition, other factors such as an initial shading in the crops, possible translocation of herbicide from target plants (cover crops) to non-target plants (cash crops), increasing demand for nitrogen by decomposing microorganisms, allelopathic effects and other aspects still must be studied, understood and avoided (Weston, 1990; Miyazawa et al.
ex Steudel, with allelopathic effects produced by a cyanobacterial bloom where the cyanobacteria Microcystis predominated (Yamasaki, 1993).
Because the 25% level had a smaller amount of extract this was not enough to facilitate germination but at other levels, and with increased extract allelopathic comparisons with the controls showed significant difference.
Additionally, some invasive exotic plant species release allelopathic toxins that can inhibit or kill native plants (Ridenour and Callaway, 2001; Prati and Bossdorf, 2004; Thorpe et al.
Parthenium plant contains chemicals, like parthenin, hysterin, hymenin, and ambrosin, and due to the presence of these chemicals, the weed exerts strong allelopathic effects on different crops.
ABSTRACT: A field study was conducted at Agronomic Research Area, University of Agriculture, Faisalabad, during summer season in the year 2007 to explore the possibility of reducing herbicide doses in combination with water leachates of allelopathic crops in rice.
Allelopathic effects may also interact with competition for resources between some Amaranthus species and the crop in which they are growing (Connick et al.
The sand roads at Archbold Biological Station provide habitats for plant and animal species that ordinarily colonize gaps produced by fire or the allelopathic litter of Ceratiola ericoides Michx.