Response of Schizolobium parahyba seedlings to water stress

Response of Schizolobium parahyba seedlings to water stress

The objective of this study was to identify the response mechanisms to water stress Schizolobium parahyba Vell. Blake seedlings. At 90 days after emergency the plants were subjected to 10 days of water deficit, then they were irrigated with different percentages of evapotranspiration (20, 40, 60, 80 and 100%) for ten more days. In the initial stage of development, seedlings of Schizolobium parahyba were partially tolerant to the caused water deficit. They presented dehydration delay as a strategy, reducing growth in height, diameter and number of leaves and directing the production of photoassimilates for maintenance, with low transpiration rate.

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Main Authors: Duarte, Daiane Marques, Rocha, Gabriela Teodoro, Resende, Cecília Leão Pereira, Silva, Bruno Melo, Rodrigues, Fabricio
Format: Digital revista
Language:eng
Published: Embrapa Florestas 2020
Online Access:https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1644
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spelling oai:ojs.pkp.sfu.ca:article-16442021-06-17T20:48:29Z Response of Schizolobium parahyba seedlings to water stress Resposta de mudas de Schizolobium parahyba ao estresse hídrico Duarte, Daiane Marques Rocha, Gabriela Teodoro Resende, Cecília Leão Pereira Silva, Bruno Melo Rodrigues, Fabricio Guapuruvu Water deficiency Evapotranspiration Guapuruvu Deficiência hídrica Evapotranspiração The objective of this study was to identify the response mechanisms to water stress Schizolobium parahyba Vell. Blake seedlings. At 90 days after emergency the plants were subjected to 10 days of water deficit, then they were irrigated with different percentages of evapotranspiration (20, 40, 60, 80 and 100%) for ten more days. In the initial stage of development, seedlings of Schizolobium parahyba were partially tolerant to the caused water deficit. They presented dehydration delay as a strategy, reducing growth in height, diameter and number of leaves and directing the production of photoassimilates for maintenance, with low transpiration rate. O objetivo deste trabalho foi identificar mecanismos de resposta ao estresse hídrico em mudas de Schizolobium parahyba Vell. Blake. Aos 90 dias após a emergência, as plantas foram submetidas a 10 dias de déficit hídrico, sendo irrigadas com diferentes porcentagens de evapotranspiração (20, 40, 60, 80 e 100%), por mais dez dias. No estágio inicial de desenvolvimento, as mudas de Schizolobium parahyba apresentaram tolerância parcial ao déficit hídrico causado e apresentaram um atraso na desidratação. Como estratégia de defesa, as plantas reduziram seu crescimento em altura, diâmetro e número de folhas, direcionando a produção de fotoassimilados para sua manutenção, com baixa taxa de transpiração. Embrapa Florestas 2020-07-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed works Trabalhos avaliados pelos pares application/pdf https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1644 10.4336/2020.pfb.40e201801644 Pesquisa Florestal Brasileira; Vol. 40 (2020) Pesquisa Florestal Brasileira; v. 40 (2020) 1983-2605 1809-3647 eng https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1644/919 Copyright (c) 2020 Autores https://creativecommons.org/licenses/by-nc-nd/4.0
institution EMBRAPA
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-pfb-br
tag revista
region America del Sur
libraryname Sistema de bibliotecas de EMBRAPA
language eng
format Digital
author Duarte, Daiane Marques
Rocha, Gabriela Teodoro
Resende, Cecília Leão Pereira
Silva, Bruno Melo
Rodrigues, Fabricio
spellingShingle Duarte, Daiane Marques
Rocha, Gabriela Teodoro
Resende, Cecília Leão Pereira
Silva, Bruno Melo
Rodrigues, Fabricio
Response of Schizolobium parahyba seedlings to water stress
author_facet Duarte, Daiane Marques
Rocha, Gabriela Teodoro
Resende, Cecília Leão Pereira
Silva, Bruno Melo
Rodrigues, Fabricio
author_sort Duarte, Daiane Marques
title Response of Schizolobium parahyba seedlings to water stress
title_short Response of Schizolobium parahyba seedlings to water stress
title_full Response of Schizolobium parahyba seedlings to water stress
title_fullStr Response of Schizolobium parahyba seedlings to water stress
title_full_unstemmed Response of Schizolobium parahyba seedlings to water stress
title_sort response of schizolobium parahyba seedlings to water stress
description The objective of this study was to identify the response mechanisms to water stress Schizolobium parahyba Vell. Blake seedlings. At 90 days after emergency the plants were subjected to 10 days of water deficit, then they were irrigated with different percentages of evapotranspiration (20, 40, 60, 80 and 100%) for ten more days. In the initial stage of development, seedlings of Schizolobium parahyba were partially tolerant to the caused water deficit. They presented dehydration delay as a strategy, reducing growth in height, diameter and number of leaves and directing the production of photoassimilates for maintenance, with low transpiration rate.
publisher Embrapa Florestas
publishDate 2020
url https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1644
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