Sensitivity of yellow passion fruit to ultraviolet‑B radiation
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por eng |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/12568 |
Resumo: | The objective of this work was to evaluate the effects of UV‑B radiation on the vegetative growth and on the gas exchange characteristics of passion fruit plants (Passiflora edulis) grown in greenhouse. The average unweighted UV‑B radiation near the apex of the plants was 8 W m-2 for the UV‑B treatment (high UV‑B), and 0.8 W m-2 for the control plants (low UV‑B). Plants were irradiated with UV‑B for 7 hours per day, centered on solar noon, during 16 days. High UV‑B radiation resulted in lower shoot dry matter accumulation per plant. The content of UV‑B absorbing compounds and anthocyanins was increased in the plants exposed to high UV‑B radiation, when compared with the control. UV‑B radiation did not affect stomatal conductance or transpiration rate, but reduced photosynthesis and instantaneous water‑use efficiency, and increased intercellular CO2 concentration. The accumulation of UV‑B‑absorbing compounds and anthocyanins did not effectively shield plants from supplementary UV‑B radiation, since the growth and photosynthetic processes were significantly reduced. |
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Sensitivity of yellow passion fruit to ultraviolet‑B radiationSensitividade do maracujazeiro‑amarelo à radiação ultravioleta‑BPassiflora edulis; anthocyanins; growth; phenolic compounds; photosynthesisPassiflora edulis; antocianinas; crescimento; compostos fenólicos; fotossínteseThe objective of this work was to evaluate the effects of UV‑B radiation on the vegetative growth and on the gas exchange characteristics of passion fruit plants (Passiflora edulis) grown in greenhouse. The average unweighted UV‑B radiation near the apex of the plants was 8 W m-2 for the UV‑B treatment (high UV‑B), and 0.8 W m-2 for the control plants (low UV‑B). Plants were irradiated with UV‑B for 7 hours per day, centered on solar noon, during 16 days. High UV‑B radiation resulted in lower shoot dry matter accumulation per plant. The content of UV‑B absorbing compounds and anthocyanins was increased in the plants exposed to high UV‑B radiation, when compared with the control. UV‑B radiation did not affect stomatal conductance or transpiration rate, but reduced photosynthesis and instantaneous water‑use efficiency, and increased intercellular CO2 concentration. The accumulation of UV‑B‑absorbing compounds and anthocyanins did not effectively shield plants from supplementary UV‑B radiation, since the growth and photosynthetic processes were significantly reduced.O objetivo deste trabalho foi avaliar o efeito da radiação UV‑B no crescimento vegetativo e nas características das trocas gasosas de plantas de maracujazeiro‑amarelo (Passiflora edulis), cultivadas em casa de vegetação. A radiação média não ponderada de UV‑B próximo ao topo das plantas foi de 8 W m-2, para plantas tratadas com UV‑B (alta UV‑B), e de 0,8 W m-2 para plantas controle (baixa UV‑B). As plantas foram irradiadas com UV‑B por 7 horas por dia, centralizadas ao redor do meio‑dia, durante 16 dias. Alta radiação de UV‑B reduziu o acúmulo de matéria seca da parte aérea da planta. O conteúdo de compostos que absorvem UV‑B e de antocianinas foi aumentado nas plantas expostas à alta radiação UV‑B, quando comparado às plantas controle. A radiação UV‑B não alterou a condutância estomática ou a taxa de transpiração, mas reduziu a fotossíntese e a eficiência instantânea do uso da água, e aumentou a concentração intercelular de CO2. O acúmulo de compostos que absorvem UV‑B e antocianinas não protegeram de forma efetiva as plantas contra o aumento da radiação suplementar UV‑B, visto que o crescimento e os processos fotossintéticos foram significativamente reduzidos.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCechin, InêsRocha, Valéria de JesusFumis, Terezinha de Fátima2012-11-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/12568Pesquisa Agropecuaria Brasileira; v.47, n.10, out. 2012; 1422-1427Pesquisa Agropecuária Brasileira; v.47, n.10, out. 2012; 1422-14271678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporenghttps://seer.sct.embrapa.br/index.php/pab/article/view/12568/8137https://seer.sct.embrapa.br/index.php/pab/article/view/12568/8138https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/12568/8243info:eu-repo/semantics/openAccess2012-12-04T20:46:39Zoai:ojs.seer.sct.embrapa.br:article/12568Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2012-12-04T20:46:39Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Sensitivity of yellow passion fruit to ultraviolet‑B radiation Sensitividade do maracujazeiro‑amarelo à radiação ultravioleta‑B |
title |
Sensitivity of yellow passion fruit to ultraviolet‑B radiation |
spellingShingle |
Sensitivity of yellow passion fruit to ultraviolet‑B radiation Cechin, Inês Passiflora edulis; anthocyanins; growth; phenolic compounds; photosynthesis Passiflora edulis; antocianinas; crescimento; compostos fenólicos; fotossíntese |
title_short |
Sensitivity of yellow passion fruit to ultraviolet‑B radiation |
title_full |
Sensitivity of yellow passion fruit to ultraviolet‑B radiation |
title_fullStr |
Sensitivity of yellow passion fruit to ultraviolet‑B radiation |
title_full_unstemmed |
Sensitivity of yellow passion fruit to ultraviolet‑B radiation |
title_sort |
Sensitivity of yellow passion fruit to ultraviolet‑B radiation |
author |
Cechin, Inês |
author_facet |
Cechin, Inês Rocha, Valéria de Jesus Fumis, Terezinha de Fátima |
author_role |
author |
author2 |
Rocha, Valéria de Jesus Fumis, Terezinha de Fátima |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Cechin, Inês Rocha, Valéria de Jesus Fumis, Terezinha de Fátima |
dc.subject.por.fl_str_mv |
Passiflora edulis; anthocyanins; growth; phenolic compounds; photosynthesis Passiflora edulis; antocianinas; crescimento; compostos fenólicos; fotossíntese |
topic |
Passiflora edulis; anthocyanins; growth; phenolic compounds; photosynthesis Passiflora edulis; antocianinas; crescimento; compostos fenólicos; fotossíntese |
description |
The objective of this work was to evaluate the effects of UV‑B radiation on the vegetative growth and on the gas exchange characteristics of passion fruit plants (Passiflora edulis) grown in greenhouse. The average unweighted UV‑B radiation near the apex of the plants was 8 W m-2 for the UV‑B treatment (high UV‑B), and 0.8 W m-2 for the control plants (low UV‑B). Plants were irradiated with UV‑B for 7 hours per day, centered on solar noon, during 16 days. High UV‑B radiation resulted in lower shoot dry matter accumulation per plant. The content of UV‑B absorbing compounds and anthocyanins was increased in the plants exposed to high UV‑B radiation, when compared with the control. UV‑B radiation did not affect stomatal conductance or transpiration rate, but reduced photosynthesis and instantaneous water‑use efficiency, and increased intercellular CO2 concentration. The accumulation of UV‑B‑absorbing compounds and anthocyanins did not effectively shield plants from supplementary UV‑B radiation, since the growth and photosynthetic processes were significantly reduced. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-11-29 |
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/12568 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/12568 |
dc.language.iso.fl_str_mv |
por eng |
language |
por eng |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/12568/8137 https://seer.sct.embrapa.br/index.php/pab/article/view/12568/8138 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/12568/8243 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf 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.47, n.10, out. 2012; 1422-1427 Pesquisa Agropecuária Brasileira; v.47, n.10, out. 2012; 1422-1427 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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1793416693938126848 |