Above-ground phytomass and below-ground biomass prodution of Salvia verbenaca Linné

Detalhes bibliográficos
Autor(a) principal: Castro, Conceição
Data de Publicação: 2002
Outros Autores: Roquete, Carlos, Gazarim, Luis
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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spelling 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
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