Artigo

Physiological changes during hydration of dalbergia nigra ((vell.) Fr. All. ex Benth.) seeds

During germination, a series of sequential events occur in seeds in response to endogenous and / or exogenous factors. The objective of this study was to investigate the physiological changes resulting from the controlled hydration in water and temperature in seeds of jacaranda-da-bahia (Dalbergia n...

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Autor principal: Ataíde, Glauciana da Batista
Outros Autores: e Borges, Eduardo Euclydes de Limae E., Gonçalves, José Francisco Carvalho de, Guimarães, Valéria Monteze, Flôres, Andressa Vasconcelos
Grau: Artigo
Idioma: pt_BR
Publicado em: Ciência Florestal 2020
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/15395
id oai:repositorio:1-15395
recordtype dspace
spelling oai:repositorio:1-15395 Physiological changes during hydration of dalbergia nigra ((vell.) Fr. All. ex Benth.) seeds Alterações fisiológicas durante a hidratação de sementes de Dalbergia nigra ((Vell.) Fr. All. ex Benth.) Ataíde, Glauciana da Batista e Borges, Eduardo Euclydes de Limae E. Gonçalves, José Francisco Carvalho de Guimarães, Valéria Monteze Flôres, Andressa Vasconcelos During germination, a series of sequential events occur in seeds in response to endogenous and / or exogenous factors. The objective of this study was to investigate the physiological changes resulting from the controlled hydration in water and temperature in seeds of jacaranda-da-bahia (Dalbergia nigra). To this end, two lots of seeds separated as high and low vigor were used in the tests. Seeds belonging to the two lots, after desinfect, were hydrated in water, with the method of humid atmosphere (relative humidity 95-99%) to reach four hydration levels: 10, 15, 20 and 25% moisture content in seeds, in temperatures (exogenous factor) of 15 and 25 ° C. After hydration and temperature treatments, were analyzed the following variables: curve soaking, germination percentage, germination speed index (GSI) and electrical conductivity. The results showed no significant difference in seeds physiological response between the temperatures. On the other hand, for hydration was found that up to 15% moisture content increased the seeds physiological quality of both lots, which showed higher germination values, IVG and smaller amounts of leached compounds. From 15% moisture content were found a reduction in the quality of seeds classified as high vigor, while those of low vigor continued to show positive responses in 20 and 25% humidity. Given this, it is concluded that the technique of controlled hydration in water favors the germination of Dalbergia nigra seeds, independent of the vigor. Hydration moisture content of 15% is more appropriate to increase the seeds quality. The hydration in values below or above resulted in a decrease in the stimulus. © 2016, Universidade Federal de Santa Maria. All Rights Reserved. 2020-05-08T20:40:40Z 2020-05-08T20:40:40Z 2016 Artigo https://repositorio.inpa.gov.br/handle/1/15395 10.5902/1980509822761 pt_BR Volume 26, Número 2, Pags. 615-625 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Ciência Florestal
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language pt_BR
description During germination, a series of sequential events occur in seeds in response to endogenous and / or exogenous factors. The objective of this study was to investigate the physiological changes resulting from the controlled hydration in water and temperature in seeds of jacaranda-da-bahia (Dalbergia nigra). To this end, two lots of seeds separated as high and low vigor were used in the tests. Seeds belonging to the two lots, after desinfect, were hydrated in water, with the method of humid atmosphere (relative humidity 95-99%) to reach four hydration levels: 10, 15, 20 and 25% moisture content in seeds, in temperatures (exogenous factor) of 15 and 25 ° C. After hydration and temperature treatments, were analyzed the following variables: curve soaking, germination percentage, germination speed index (GSI) and electrical conductivity. The results showed no significant difference in seeds physiological response between the temperatures. On the other hand, for hydration was found that up to 15% moisture content increased the seeds physiological quality of both lots, which showed higher germination values, IVG and smaller amounts of leached compounds. From 15% moisture content were found a reduction in the quality of seeds classified as high vigor, while those of low vigor continued to show positive responses in 20 and 25% humidity. Given this, it is concluded that the technique of controlled hydration in water favors the germination of Dalbergia nigra seeds, independent of the vigor. Hydration moisture content of 15% is more appropriate to increase the seeds quality. The hydration in values below or above resulted in a decrease in the stimulus. © 2016, Universidade Federal de Santa Maria. All Rights Reserved.
format Artigo
author Ataíde, Glauciana da Batista
spellingShingle Ataíde, Glauciana da Batista
Physiological changes during hydration of dalbergia nigra ((vell.) Fr. All. ex Benth.) seeds
author2 e Borges, Eduardo Euclydes de Limae E.
Gonçalves, José Francisco Carvalho de
Guimarães, Valéria Monteze
Flôres, Andressa Vasconcelos
author2Str e Borges, Eduardo Euclydes de Limae E.
Gonçalves, José Francisco Carvalho de
Guimarães, Valéria Monteze
Flôres, Andressa Vasconcelos
title Physiological changes during hydration of dalbergia nigra ((vell.) Fr. All. ex Benth.) seeds
title_short Physiological changes during hydration of dalbergia nigra ((vell.) Fr. All. ex Benth.) seeds
title_full Physiological changes during hydration of dalbergia nigra ((vell.) Fr. All. ex Benth.) seeds
title_fullStr Physiological changes during hydration of dalbergia nigra ((vell.) Fr. All. ex Benth.) seeds
title_full_unstemmed Physiological changes during hydration of dalbergia nigra ((vell.) Fr. All. ex Benth.) seeds
title_sort physiological changes during hydration of dalbergia nigra ((vell.) fr. all. ex benth.) seeds
publisher Ciência Florestal
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/15395
_version_ 1787141620744847360
score 11.755432

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