Cultivated species sensibility to aqueous extract of Eragrostis plana with high total phenolic content

Agrarian

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Title Cultivated species sensibility to aqueous extract of Eragrostis plana with high total phenolic content
Sensibilidade de espécies cultivadas ao extrato aquoso de Eragrostis plana com elevado conteúdo de fenólicos totais
 
Creator Bittencourt, Henrique von Hetwig
Bonome, Lisandro Tomas da Silva
Trezzi, Michelangelo Muzell
Bitencourt, Thiago Bergler
Pagnoncelli, Fortunato de Bortoli
Siqueira, Diogo José
 
Subject Fitotecnica; matologia
Urochloa brizantha cv. Marandu. Medicago sativa cv. Monarca. Triticum aestivum cv. IPR Catuara. Phytochemical ecology. Allelopathy.

Urochloa brizantha cv. Marandu. Medicago sativa cv. Monarca. Triticum aestivum cv. IPR Catuara. Ecologia fitoquímica. Alelopatia.
 
Description Eragrostis plana is one of the most invasive alien species in pasture lands of southern South America, due to its biological and ecological characteristics. The objectives of the present work were to quantify the total phenols in an aqueous extract from incubated dry matter of E. plana shoots and to evaluate its effect on seed germination and seedling development of three cultivated species. The amount of total phenols present in the aqueous extract of the degraded biomass was approximately 0.75 g L-1, which is equivalent to 1.35 % of the dry mass of the shoots. Alfalfa was the species that showed greater sensitivity to the aqueous extract, being impaired in both germination and seedling development. Palisade grass and wheat were harmed only during seedling development. Palisade grass was the only species that benefited from the aqueous extract, presenting a smaller number of abnormal seedlings. More studies are needed to characterize the allelochemicals present in the aqueous extract of E. plana phytomass, its release rate, and its behavior in soils of infested areas.
Eragrostis plana é uma das espécies alóctones com maior potencial invasivo nas áreas de pastagem natural do Sul da América do Sul, devido suas características biológicas e ecológicas. Os objetivos desse trabalho foram quantificar os fenóis totais presentes no extrato aquoso de extratos de parte aérea incubada de E. plana e avaliar o seu efeito na germinação e no desenvolvimento de plântulas de três espécies cultivadas. A quantidade total de fenóis presentes no extrato aquoso da biomassa degradada foi de aproximadamente 0,75 g L-1, o que equivale a 1,35% da massa seca da parte aérea das plantas. A alfafa foi a espécie com maior sensibilidade ao estrato aquoso, tendo tanto a germinação quanto o desenvolvimento de plântula inibidos. Braquiária brizanta e trigo sofreram apenas no desenvolvimento das plântulas. Braquiária brizanta foi a única espécie que se beneficiou do extrato aquoso, apresentando menor número de plântulas anormais. Mais estudos são necessários para caracterizar os aleloquímicos presentes no extrato aquoso da fitomassa de E. plana, sua taxa de liberação e seu comportamento no solo de áreas infestadas.
 
Publisher Editora UFGD
 
Contributor Conselho Nacional de Desenvolvimento Científico e Tecnológico
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Universidade Federal da Fronteira Sul
Universidade Tecnológica Federal do Paraná

 
Date 2020-11-23
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion


 
Format application/pdf
 
Identifier https://ojs.ufgd.edu.br/index.php/agrarian/article/view/10582
10.30612/agrarian.v13i50.10582
 
Source Agrarian Journal; v. 13, n. 50 (2020); 448-459
Agrarian; v. 13, n. 50 (2020); 448-459
1984-2538
 
Language eng
 
Relation https://ojs.ufgd.edu.br/index.php/agrarian/article/view/10582/6391
https://ojs.ufgd.edu.br/index.php/agrarian/article/downloadSuppFile/10582/2154
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Rights Direitos autorais 2020 Agrarian
https://creativecommons.org/licenses/by-nc-sa/3.0/br/
 

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