Alelopathic effects of extracts of Tradescantia zebrina in germination of Lactuca sativa

Danielle Roballo de Moura, Emmanoella Costa Guaraná Araujo, Thiago Cardoso Silva, Shyrlaine Lilian Moura Leão, Tarcísio Viana de Lima

Abstract


By releasing allelopathic substances, produced in the secondary metabolism, an individual can influence the development of other organisms in their surroundings. This study aimed to evaluate the effect of aqueous extracts of Tradescantia zebrina Heynh. ex Bosse. (zebrina) in the germination and initial development of seeds of Lactuca sativa L. (lettuce). The experiment was conducted under natural environment conditions (25°C and 72% RH), with extracts leaf and roots of zebrine at concentrations of 100%, 75%, 50% and 25%, using distilled water as a control treatment. Fifty seeds of lettuce were used, uniformly distributed in germitest® paper, duly sterilized and moistened with the solution, in gerbox® boxes, with five replicates. The observations lasted seven days, evaluating the percentage of germination (%G), germination speed index (GSI), mean germination time (t) and average germination velocity (v). These data were submitted to the statistical analysis, after which the applications of leaf extracts and zebrine roots reduced the percentage of germination and the germination speed of lettuce seeds, indicating their allelopathic effect.

Keywords


Allelochemical potential; Exotic species; Aqueous extracts; Dois Irmãos State Park



DOI: https://doi.org/10.5902/2316980X30681

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INDEXING SOURCES:

AGRIS/CARIS, AGROBASE/BINAGRI, LATINDEX, REDE CARINIANA, DOAJ, EZB, PERIÓDICOS CAPES, TIB, CAB ABSTRACT, DIADORIM.

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Impact factor: 0.89

General DOI: 10.5902/2316980X (the specifics are in the ABSTRACTS - click on the article title, in summary)

"The papers published in the journal Ecology and Forest Nutrition / Ecology and Forest Nutrition are the responsibility of the authors and do not necessarily represent the opinion of the editors. The article reproduction is allowed, however citation the source ".

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