Ecophysiological studies of four amazonian weedy species: implications for their invasive potential.
Autor(a) principal: | |
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Data de Publicação: | 1994 |
Tipo de documento: | Tese |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/402604 |
Resumo: | This research focused on a comparative study of four important perenial weedy species from pastures and crop areas in eastern Brazilian Amazonia: Ipomoea asarifolia (Desr.) Roem. & Schultz (Convolvulaceae), Stachytarpheta cayennensis (Rich) Vahl. (Verbenaceae), Solanum crinitum Lam. (Solanaceae) and Vismia guianensis (Aubl.) Choisy (Guttiferae). Two major lines of experiments were conducted. The firts investigated some aspects of the seed ecology of the species: longevity in the soil, germination responses to light, nitrate and osmotic stress and the effect of planting depth on seedling emergence. The second line of experiments evaluated the effect of limited soil moisture or of contrasting light environments on physiological and morphological responses of thespecies. In addition, the effect of a simulated mowing regime on the fecundity of S. cayennensis was evaluated. The results from this research have identified ecophysiological characteristics which indicate that all four species studied are equiped with traits that can render them noxious weedy species in tropical regions. However, based on the environmental and management conditions known to exist in cultivated pastures and certain crop areas in eastern Brazilian Amazonia, the potential of these species to become persistent weeds and extend their ranges could be tentatively classified in the following sequence: Stachytapheta > Vismia > Solanum > Ipomoea. |
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Ecophysiological studies of four amazonian weedy species: implications for their invasive potential.EcofisiologiaBrasilIpanema asarifoliaStachytarpheta coyenannensisWeedErva DaninhaVismia GuianensisAmazoniaSolanum crinitumecophysiologyThis research focused on a comparative study of four important perenial weedy species from pastures and crop areas in eastern Brazilian Amazonia: Ipomoea asarifolia (Desr.) Roem. & Schultz (Convolvulaceae), Stachytarpheta cayennensis (Rich) Vahl. (Verbenaceae), Solanum crinitum Lam. (Solanaceae) and Vismia guianensis (Aubl.) Choisy (Guttiferae). Two major lines of experiments were conducted. The firts investigated some aspects of the seed ecology of the species: longevity in the soil, germination responses to light, nitrate and osmotic stress and the effect of planting depth on seedling emergence. The second line of experiments evaluated the effect of limited soil moisture or of contrasting light environments on physiological and morphological responses of thespecies. In addition, the effect of a simulated mowing regime on the fecundity of S. cayennensis was evaluated. The results from this research have identified ecophysiological characteristics which indicate that all four species studied are equiped with traits that can render them noxious weedy species in tropical regions. However, based on the environmental and management conditions known to exist in cultivated pastures and certain crop areas in eastern Brazilian Amazonia, the potential of these species to become persistent weeds and extend their ranges could be tentatively classified in the following sequence: Stachytapheta > Vismia > Solanum > Ipomoea.Dissertation (Doctor of Philosophy) - Cornell University, Cornell.MOACYR BERNARDINO DIAS FILHO, CPATU.DIAS FILHO, M. B.2011-04-10T11:11:11Z2011-04-10T11:11:11Z2011-04-10T11:11:11Z2011-04-10T11:11:11Z1995-06-2019942017-06-23T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisil.220 f.1994.http://www.alice.cnptia.embrapa.br/alice/handle/doc/402604enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2017-06-23T23:48:13Zoai:www.alice.cnptia.embrapa.br:doc/402604Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-06-23T23:48:13falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-06-23T23:48:13Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Ecophysiological studies of four amazonian weedy species: implications for their invasive potential. |
title |
Ecophysiological studies of four amazonian weedy species: implications for their invasive potential. |
spellingShingle |
Ecophysiological studies of four amazonian weedy species: implications for their invasive potential. DIAS FILHO, M. B. Ecofisiologia Brasil Ipanema asarifolia Stachytarpheta coyenannensis Weed Erva Daninha Vismia Guianensis Amazonia Solanum crinitum ecophysiology |
title_short |
Ecophysiological studies of four amazonian weedy species: implications for their invasive potential. |
title_full |
Ecophysiological studies of four amazonian weedy species: implications for their invasive potential. |
title_fullStr |
Ecophysiological studies of four amazonian weedy species: implications for their invasive potential. |
title_full_unstemmed |
Ecophysiological studies of four amazonian weedy species: implications for their invasive potential. |
title_sort |
Ecophysiological studies of four amazonian weedy species: implications for their invasive potential. |
author |
DIAS FILHO, M. B. |
author_facet |
DIAS FILHO, M. B. |
author_role |
author |
dc.contributor.none.fl_str_mv |
MOACYR BERNARDINO DIAS FILHO, CPATU. |
dc.contributor.author.fl_str_mv |
DIAS FILHO, M. B. |
dc.subject.por.fl_str_mv |
Ecofisiologia Brasil Ipanema asarifolia Stachytarpheta coyenannensis Weed Erva Daninha Vismia Guianensis Amazonia Solanum crinitum ecophysiology |
topic |
Ecofisiologia Brasil Ipanema asarifolia Stachytarpheta coyenannensis Weed Erva Daninha Vismia Guianensis Amazonia Solanum crinitum ecophysiology |
description |
This research focused on a comparative study of four important perenial weedy species from pastures and crop areas in eastern Brazilian Amazonia: Ipomoea asarifolia (Desr.) Roem. & Schultz (Convolvulaceae), Stachytarpheta cayennensis (Rich) Vahl. (Verbenaceae), Solanum crinitum Lam. (Solanaceae) and Vismia guianensis (Aubl.) Choisy (Guttiferae). Two major lines of experiments were conducted. The firts investigated some aspects of the seed ecology of the species: longevity in the soil, germination responses to light, nitrate and osmotic stress and the effect of planting depth on seedling emergence. The second line of experiments evaluated the effect of limited soil moisture or of contrasting light environments on physiological and morphological responses of thespecies. In addition, the effect of a simulated mowing regime on the fecundity of S. cayennensis was evaluated. The results from this research have identified ecophysiological characteristics which indicate that all four species studied are equiped with traits that can render them noxious weedy species in tropical regions. However, based on the environmental and management conditions known to exist in cultivated pastures and certain crop areas in eastern Brazilian Amazonia, the potential of these species to become persistent weeds and extend their ranges could be tentatively classified in the following sequence: Stachytapheta > Vismia > Solanum > Ipomoea. |
publishDate |
1994 |
dc.date.none.fl_str_mv |
1994 1995-06-20 2011-04-10T11:11:11Z 2011-04-10T11:11:11Z 2011-04-10T11:11:11Z 2011-04-10T11:11:11Z 2017-06-23T11:11:11Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
1994. http://www.alice.cnptia.embrapa.br/alice/handle/doc/402604 |
identifier_str_mv |
1994. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/402604 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
il. 220 f. |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
_version_ |
1794503354264584192 |