Phytotoxic substances present in annoni-2 grass

Detalhes bibliográficos
Autor(a) principal: Coelho, Rogério Waltrick
Data de Publicação: 2014
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/14722
Resumo: A greenhouse investigation was conducted throughout 1982 to detect the presence of phytotoxic substances in the annoni-2 grass (Eragrostis plana Nees) plants. Ryegrass (Loilum multiflorum Lam.), white clover (Trifolium repents L.) and birdsfoot trefoil (Lotus comiculatus L.) plants were selected as testers. Three experiments were conducted. The results showed that the seed germination of white clover was inhibited significantly; the same occurred with the development of the aerial part of the seedlings. The ryegrass seedlings development was very poor in both aerial part and in the roots. Birdsfoot trefoil seed germination and seedlings growth were normal. Irrigation of ryegrass plants with water extracts of different plant parts of annoni-2 grass resulted in a stimulatory growth effect. It was concluded that the plants of this grass released phytotoxic substances to the environment which remained biologically active in the soil. These phytotoxic substances released were specific to the inhibited species. In the plants of this grass there is an interspecific allelopathy.
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spelling Phytotoxic substances present in annoni-2 grassSubstâncias fitotóxicas presentes no capim-annoni-2Eragrostis plana; ryegrass; Lolium multiflorum; white clover; Trifolium repens; birdsfoot trefoil; Lotus corniculatus; seed germination; seedling development; allelopathy; plant extractEragrostis plana; azevém; Lolium multiflorum; trevo-branco; Trifolium repens; Cornichão; Lotus corniculatus; germinação de sementes; desenvolvimento de plântulas; alelopatia; extrato de plantasA greenhouse investigation was conducted throughout 1982 to detect the presence of phytotoxic substances in the annoni-2 grass (Eragrostis plana Nees) plants. Ryegrass (Loilum multiflorum Lam.), white clover (Trifolium repents L.) and birdsfoot trefoil (Lotus comiculatus L.) plants were selected as testers. Three experiments were conducted. The results showed that the seed germination of white clover was inhibited significantly; the same occurred with the development of the aerial part of the seedlings. The ryegrass seedlings development was very poor in both aerial part and in the roots. Birdsfoot trefoil seed germination and seedlings growth were normal. Irrigation of ryegrass plants with water extracts of different plant parts of annoni-2 grass resulted in a stimulatory growth effect. It was concluded that the plants of this grass released phytotoxic substances to the environment which remained biologically active in the soil. These phytotoxic substances released were specific to the inhibited species. In the plants of this grass there is an interspecific allelopathy.Durante 1982 foi conduzido, em casa-de-vegetação, trabalho que teve como objetivo principal detectar a presença de substâncias fitotóxicas em plantas de capim-annoni-2 (Eragrostis plana Nees). O azevém (Lolium multiflorum Lam.), trevo-branco (Trifolium repens L.) e comichão (Lotus comiculatus L.) foram escolhidas como plantas indicadoras. Foram realizados três experimentos. Os resultados indicaram que a germinação de sementes de trevo-branco foi prejudicada de maneira significativa; o mesmo ocorreu com o desenvolvimento aéreo das plântulas. O azevém teve o crescimento de suas plântulas prejudicado, tanto nas raízes como na parte aérea. O comichão teve a germinação de sementes e o desenvolvimento das plântulas normais. A irrigação de plantas de azevém com extratos aquosos de diferentes partes de plantas de capim-annoni-2, resultaram em efeitos estimulatórios. Concluiu-se que esse capim libera substâncias fitotóxicas ao ambiente e que estas permanecem biologicamente ativas no solo. Existe uma especificidade da substância fitotóxica liberada à espécie prejudicada. Existe, nesse capim, uma atividade alelopática interespecífica.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCoelho, Rogério Waltrick2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/14722Pesquisa Agropecuaria Brasileira; v.21, n.3, mar. 1986; 255-263Pesquisa Agropecuária Brasileira; v.21, n.3, mar. 1986; 255-2631678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/14722/8404info:eu-repo/semantics/openAccess2014-10-17T18:40:19Zoai:ojs.seer.sct.embrapa.br:article/14722Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-10-17T18:40:19Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Phytotoxic substances present in annoni-2 grass
Substâncias fitotóxicas presentes no capim-annoni-2
title Phytotoxic substances present in annoni-2 grass
spellingShingle Phytotoxic substances present in annoni-2 grass
Coelho, Rogério Waltrick
Eragrostis plana; ryegrass; Lolium multiflorum; white clover; Trifolium repens; birdsfoot trefoil; Lotus corniculatus; seed germination; seedling development; allelopathy; plant extract
Eragrostis plana; azevém; Lolium multiflorum; trevo-branco; Trifolium repens; Cornichão; Lotus corniculatus; germinação de sementes; desenvolvimento de plântulas; alelopatia; extrato de plantas
title_short Phytotoxic substances present in annoni-2 grass
title_full Phytotoxic substances present in annoni-2 grass
title_fullStr Phytotoxic substances present in annoni-2 grass
title_full_unstemmed Phytotoxic substances present in annoni-2 grass
title_sort Phytotoxic substances present in annoni-2 grass
author Coelho, Rogério Waltrick
author_facet Coelho, Rogério Waltrick
author_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Coelho, Rogério Waltrick
dc.subject.por.fl_str_mv Eragrostis plana; ryegrass; Lolium multiflorum; white clover; Trifolium repens; birdsfoot trefoil; Lotus corniculatus; seed germination; seedling development; allelopathy; plant extract
Eragrostis plana; azevém; Lolium multiflorum; trevo-branco; Trifolium repens; Cornichão; Lotus corniculatus; germinação de sementes; desenvolvimento de plântulas; alelopatia; extrato de plantas
topic Eragrostis plana; ryegrass; Lolium multiflorum; white clover; Trifolium repens; birdsfoot trefoil; Lotus corniculatus; seed germination; seedling development; allelopathy; plant extract
Eragrostis plana; azevém; Lolium multiflorum; trevo-branco; Trifolium repens; Cornichão; Lotus corniculatus; germinação de sementes; desenvolvimento de plântulas; alelopatia; extrato de plantas
description A greenhouse investigation was conducted throughout 1982 to detect the presence of phytotoxic substances in the annoni-2 grass (Eragrostis plana Nees) plants. Ryegrass (Loilum multiflorum Lam.), white clover (Trifolium repents L.) and birdsfoot trefoil (Lotus comiculatus L.) plants were selected as testers. Three experiments were conducted. The results showed that the seed germination of white clover was inhibited significantly; the same occurred with the development of the aerial part of the seedlings. The ryegrass seedlings development was very poor in both aerial part and in the roots. Birdsfoot trefoil seed germination and seedlings growth were normal. Irrigation of ryegrass plants with water extracts of different plant parts of annoni-2 grass resulted in a stimulatory growth effect. It was concluded that the plants of this grass released phytotoxic substances to the environment which remained biologically active in the soil. These phytotoxic substances released were specific to the inhibited species. In the plants of this grass there is an interspecific allelopathy.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-17
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/14722
url https://seer.sct.embrapa.br/index.php/pab/article/view/14722
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/14722/8404
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.21, n.3, mar. 1986; 255-263
Pesquisa Agropecuária Brasileira; v.21, n.3, mar. 1986; 255-263
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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