Germination ecology of Rhynchosia capitata: an emerging summer weed in Asia

Detalhes bibliográficos
Autor(a) principal: Ali,H.H.
Data de Publicação: 2013
Outros Autores: Tanveer,A., Nadeem,M.A., Asghar,H.N., Javaid,M.M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Planta daninha (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000200002
Resumo: Rhynchosia capitata is becoming an increasing problem in summer crops, such as cotton, soybean, pearl millet and mungbean in many Asian countries. Laboratory and greenhouse studies have been conducted to determine the effects of several environmental factors on seed germination patterns and seedling emergence of R. capitata. We investigated whether the diverse ecological factors such as temperature, light, salinity, moisture stress, pH, and soil depth affected germination and seedling emergence of R. capitata. Germination increased as temperature increased from 25ºC and significantly reduced at 45ºC. Presence or absence of light did not influence germination. Germination of R. capitata was sensitive to increased salt and moisture stress, as well as to seed burial depth. Only 48% of seeds germinated at 150 mM salt concentration compared to 100% in control (distilled water). Similarly, 15% of seeds germinated at an osmotic potential of ‑0.8 MPa compared to 88% at ‑0.2 MPa. The optimum pH for seed germination of R. capitata was 7 (98% germination), but the seeds also germinated at lower level of pH 5 (85%) and at higher level of pH 10 (75%). In seed burial trial, maximum seedling emergence of 93% occurred at 2 cm depth, and seedling did not emerge from a depth of 12 cm. The high germination ability of R. capitata under a wide range of ecological factors suggests that this species is likely to be the one to cause more problems in a near future, if not managed appropriately.
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spelling Germination ecology of Rhynchosia capitata: an emerging summer weed in Asiamoisture stresspHsalinityseedling emergenceburial depthRhynchosia capitata is becoming an increasing problem in summer crops, such as cotton, soybean, pearl millet and mungbean in many Asian countries. Laboratory and greenhouse studies have been conducted to determine the effects of several environmental factors on seed germination patterns and seedling emergence of R. capitata. We investigated whether the diverse ecological factors such as temperature, light, salinity, moisture stress, pH, and soil depth affected germination and seedling emergence of R. capitata. Germination increased as temperature increased from 25ºC and significantly reduced at 45ºC. Presence or absence of light did not influence germination. Germination of R. capitata was sensitive to increased salt and moisture stress, as well as to seed burial depth. Only 48% of seeds germinated at 150 mM salt concentration compared to 100% in control (distilled water). Similarly, 15% of seeds germinated at an osmotic potential of ‑0.8 MPa compared to 88% at ‑0.2 MPa. The optimum pH for seed germination of R. capitata was 7 (98% germination), but the seeds also germinated at lower level of pH 5 (85%) and at higher level of pH 10 (75%). In seed burial trial, maximum seedling emergence of 93% occurred at 2 cm depth, and seedling did not emerge from a depth of 12 cm. The high germination ability of R. capitata under a wide range of ecological factors suggests that this species is likely to be the one to cause more problems in a near future, if not managed appropriately.Sociedade Brasileira da Ciência das Plantas Daninhas 2013-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000200002Planta Daninha v.31 n.2 2013reponame:Planta daninha (Online)instname:Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD)instacron:SBCPD10.1590/S0100-83582013000200002info:eu-repo/semantics/openAccessAli,H.H.Tanveer,A.Nadeem,M.A.Asghar,H.N.Javaid,M.M.eng2013-04-17T00:00:00Zoai:scielo:S0100-83582013000200002Revistahttp://revistas.cpd.ufv.br/pdaninhaweb/https://old.scielo.br/oai/scielo-oai.php||rpdaninha@gmail.com1806-96810100-8358opendoar:2013-04-17T00:00Planta daninha (Online) - Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD)false
dc.title.none.fl_str_mv Germination ecology of Rhynchosia capitata: an emerging summer weed in Asia
title Germination ecology of Rhynchosia capitata: an emerging summer weed in Asia
spellingShingle Germination ecology of Rhynchosia capitata: an emerging summer weed in Asia
Ali,H.H.
moisture stress
pH
salinity
seedling emergence
burial depth
title_short Germination ecology of Rhynchosia capitata: an emerging summer weed in Asia
title_full Germination ecology of Rhynchosia capitata: an emerging summer weed in Asia
title_fullStr Germination ecology of Rhynchosia capitata: an emerging summer weed in Asia
title_full_unstemmed Germination ecology of Rhynchosia capitata: an emerging summer weed in Asia
title_sort Germination ecology of Rhynchosia capitata: an emerging summer weed in Asia
author Ali,H.H.
author_facet Ali,H.H.
Tanveer,A.
Nadeem,M.A.
Asghar,H.N.
Javaid,M.M.
author_role author
author2 Tanveer,A.
Nadeem,M.A.
Asghar,H.N.
Javaid,M.M.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Ali,H.H.
Tanveer,A.
Nadeem,M.A.
Asghar,H.N.
Javaid,M.M.
dc.subject.por.fl_str_mv moisture stress
pH
salinity
seedling emergence
burial depth
topic moisture stress
pH
salinity
seedling emergence
burial depth
description Rhynchosia capitata is becoming an increasing problem in summer crops, such as cotton, soybean, pearl millet and mungbean in many Asian countries. Laboratory and greenhouse studies have been conducted to determine the effects of several environmental factors on seed germination patterns and seedling emergence of R. capitata. We investigated whether the diverse ecological factors such as temperature, light, salinity, moisture stress, pH, and soil depth affected germination and seedling emergence of R. capitata. Germination increased as temperature increased from 25ºC and significantly reduced at 45ºC. Presence or absence of light did not influence germination. Germination of R. capitata was sensitive to increased salt and moisture stress, as well as to seed burial depth. Only 48% of seeds germinated at 150 mM salt concentration compared to 100% in control (distilled water). Similarly, 15% of seeds germinated at an osmotic potential of ‑0.8 MPa compared to 88% at ‑0.2 MPa. The optimum pH for seed germination of R. capitata was 7 (98% germination), but the seeds also germinated at lower level of pH 5 (85%) and at higher level of pH 10 (75%). In seed burial trial, maximum seedling emergence of 93% occurred at 2 cm depth, and seedling did not emerge from a depth of 12 cm. The high germination ability of R. capitata under a wide range of ecological factors suggests that this species is likely to be the one to cause more problems in a near future, if not managed appropriately.
publishDate 2013
dc.date.none.fl_str_mv 2013-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000200002
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000200002
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0100-83582013000200002
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira da Ciência das Plantas Daninhas
publisher.none.fl_str_mv Sociedade Brasileira da Ciência das Plantas Daninhas
dc.source.none.fl_str_mv Planta Daninha v.31 n.2 2013
reponame:Planta daninha (Online)
instname:Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD)
instacron:SBCPD
instname_str Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD)
instacron_str SBCPD
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reponame_str Planta daninha (Online)
collection Planta daninha (Online)
repository.name.fl_str_mv Planta daninha (Online) - Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD)
repository.mail.fl_str_mv ||rpdaninha@gmail.com
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