Above-ground phytomass and below-ground biomass prodution of Salvia verbenaca Linné
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/10005 |
Resumo: | Salvia verbenaca L. is a ruderal herbaceous plant, very common in the Mediterranean region. Its flowers are prized for their appearance, and it displays a high degree of adaptability in relatiopn to habitat sites with a paucity of resources. The objective of this study was to obtain data about the prodution of phytomass and root biomass, with a view to the probable use of this species in urban green spaces. A two-year field experiment was undertaken, comprising four tratments of eight randomly selected plots, four being used in each year. This species was manual seed broadcast at the following densities: 20 000, 15 000, 10 000,5 000 viable seeds m2. The prodution of phytomass and root biomass was assessed through periodic collections, during the seasonal cycle of the species under study. In the first year there appears to have been a tendency for an increase in seed density to cause an increase in phytomass production. In the second year, by which time the plants had settled, when seed density rose from 5 000 to 10 000, a slight increase in phytomass prodution occurred. However, when the seed density rose from 10 000 to 20 000 seed m2 a decrease in phytomass production was observed. Root biomass in the first year, had minimum value in January and a maximum value in june-July. In the second year, the highest values were observed in May. The relationship between above and below ground biomass, for the first-year experiment, decreased over the cutting dates. However, an inverse behaviour occurred in the second year. Although the values of the phytomass obtained did not reveal statistically significant differences between treatments, when the plants were found already established, they appeared to indicate that densities of seeding between 5 000 and 10 000 m2 could be more advantageous. |
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Above-ground phytomass and below-ground biomass prodution of Salvia verbenaca LinnéPhytomassseed densityroot biomassshoot/root ratioSalvia verbenaca L. is a ruderal herbaceous plant, very common in the Mediterranean region. Its flowers are prized for their appearance, and it displays a high degree of adaptability in relatiopn to habitat sites with a paucity of resources. The objective of this study was to obtain data about the prodution of phytomass and root biomass, with a view to the probable use of this species in urban green spaces. A two-year field experiment was undertaken, comprising four tratments of eight randomly selected plots, four being used in each year. This species was manual seed broadcast at the following densities: 20 000, 15 000, 10 000,5 000 viable seeds m2. The prodution of phytomass and root biomass was assessed through periodic collections, during the seasonal cycle of the species under study. In the first year there appears to have been a tendency for an increase in seed density to cause an increase in phytomass production. In the second year, by which time the plants had settled, when seed density rose from 5 000 to 10 000, a slight increase in phytomass prodution occurred. However, when the seed density rose from 10 000 to 20 000 seed m2 a decrease in phytomass production was observed. Root biomass in the first year, had minimum value in January and a maximum value in june-July. In the second year, the highest values were observed in May. The relationship between above and below ground biomass, for the first-year experiment, decreased over the cutting dates. However, an inverse behaviour occurred in the second year. Although the values of the phytomass obtained did not reveal statistically significant differences between treatments, when the plants were found already established, they appeared to indicate that densities of seeding between 5 000 and 10 000 m2 could be more advantageous.2014-01-24T16:09:56Z2014-01-242002-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10174/10005http://hdl.handle.net/10174/10005engnaonaonaomccastro@uevora.ptndnd202Castro, ConceiçãoRoquete, CarlosGazarim, Luisinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T18:52:26Zoai:dspace.uevora.pt:10174/10005Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:03:58.124255Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Above-ground phytomass and below-ground biomass prodution of Salvia verbenaca Linné |
title |
Above-ground phytomass and below-ground biomass prodution of Salvia verbenaca Linné |
spellingShingle |
Above-ground phytomass and below-ground biomass prodution of Salvia verbenaca Linné Castro, Conceição Phytomass seed density root biomass shoot/root ratio |
title_short |
Above-ground phytomass and below-ground biomass prodution of Salvia verbenaca Linné |
title_full |
Above-ground phytomass and below-ground biomass prodution of Salvia verbenaca Linné |
title_fullStr |
Above-ground phytomass and below-ground biomass prodution of Salvia verbenaca Linné |
title_full_unstemmed |
Above-ground phytomass and below-ground biomass prodution of Salvia verbenaca Linné |
title_sort |
Above-ground phytomass and below-ground biomass prodution of Salvia verbenaca Linné |
author |
Castro, Conceição |
author_facet |
Castro, Conceição Roquete, Carlos Gazarim, Luis |
author_role |
author |
author2 |
Roquete, Carlos Gazarim, Luis |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Castro, Conceição Roquete, Carlos Gazarim, Luis |
dc.subject.por.fl_str_mv |
Phytomass seed density root biomass shoot/root ratio |
topic |
Phytomass seed density root biomass shoot/root ratio |
description |
Salvia verbenaca L. is a ruderal herbaceous plant, very common in the Mediterranean region. Its flowers are prized for their appearance, and it displays a high degree of adaptability in relatiopn to habitat sites with a paucity of resources. The objective of this study was to obtain data about the prodution of phytomass and root biomass, with a view to the probable use of this species in urban green spaces. A two-year field experiment was undertaken, comprising four tratments of eight randomly selected plots, four being used in each year. This species was manual seed broadcast at the following densities: 20 000, 15 000, 10 000,5 000 viable seeds m2. The prodution of phytomass and root biomass was assessed through periodic collections, during the seasonal cycle of the species under study. In the first year there appears to have been a tendency for an increase in seed density to cause an increase in phytomass production. In the second year, by which time the plants had settled, when seed density rose from 5 000 to 10 000, a slight increase in phytomass prodution occurred. However, when the seed density rose from 10 000 to 20 000 seed m2 a decrease in phytomass production was observed. Root biomass in the first year, had minimum value in January and a maximum value in june-July. In the second year, the highest values were observed in May. The relationship between above and below ground biomass, for the first-year experiment, decreased over the cutting dates. However, an inverse behaviour occurred in the second year. Although the values of the phytomass obtained did not reveal statistically significant differences between treatments, when the plants were found already established, they appeared to indicate that densities of seeding between 5 000 and 10 000 m2 could be more advantageous. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002-01-01T00:00:00Z 2014-01-24T16:09:56Z 2014-01-24 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/10005 http://hdl.handle.net/10174/10005 |
url |
http://hdl.handle.net/10174/10005 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
nao nao nao mccastro@uevora.pt nd nd 202 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
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1799136523752308736 |