Ecofisiologia de cryptostegia madagascariensis Bojer ex Decne submetida à restrição hídrica
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) |
Texto Completo: | https://repositorio.ufersa.edu.br/handle/tede/120 |
Resumo: | The introduction of exotic species in natural communities is usually mediated by human activity. One example is Cryptostegia madagascariensis, species considered invasive in almost every country in which it was introduced. In Brazil, it is invading wetlands in the Northeast and is known as the Carnaubeiras (Copernicia prunifera) killer. The species is highly tolerant to flooding, but it also has drought tolerance. It is necessary to understand how adaptation to drought occurs, to identify the capacity of this plant to invade new areas. The objective of this work is to understand the adaptation of C. madagascariensis to low water availability. This study was conducted in the seedling nursery of the Department of Plant Sciences at the Federal Rural University of the Semi-Arid (UFERSA). It was adopted a randomized blocks design in subdivided plots, with four blocks. In the plots, the water treatments were placed (irrigated and stressed). The subplots were the plant sages (4, 6 and 8 months). When the plants showed leaf senescence, irrigation was resumed and leaves were selected for biochemical analyzes of photosynthetic pigments, total soluble sugars and total free amino acids were made. At 5 days of water deprivation, the plants had reduced photosynthesis, stomatal conductance and transpiration. At that point, there was a statistical difference for the water potential at noon, pre-dawn, free amino acids and soluble sugars in plants that were subjected to stress. The behavior exhibited by Cryptostegia madagascariensis indicates that this species has a conservative profile, reducing their leaf area and promoting stomatal closure to conserve water |
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Ecofisiologia de cryptostegia madagascariensis Bojer ex Decne submetida à restrição hídricaEcophysiology of Cryptostegia madagascariensis Bojer ex Decne subjected to water restrictionEcofisiologiaBioquímicaEstresse hídricoFotossínteseWater stressPhotosynthesisBiochemistryPhotosynthesisCNPQ::CIENCIAS AGRARIAS::AGRONOMIAThe introduction of exotic species in natural communities is usually mediated by human activity. One example is Cryptostegia madagascariensis, species considered invasive in almost every country in which it was introduced. In Brazil, it is invading wetlands in the Northeast and is known as the Carnaubeiras (Copernicia prunifera) killer. The species is highly tolerant to flooding, but it also has drought tolerance. It is necessary to understand how adaptation to drought occurs, to identify the capacity of this plant to invade new areas. The objective of this work is to understand the adaptation of C. madagascariensis to low water availability. This study was conducted in the seedling nursery of the Department of Plant Sciences at the Federal Rural University of the Semi-Arid (UFERSA). It was adopted a randomized blocks design in subdivided plots, with four blocks. In the plots, the water treatments were placed (irrigated and stressed). The subplots were the plant sages (4, 6 and 8 months). When the plants showed leaf senescence, irrigation was resumed and leaves were selected for biochemical analyzes of photosynthetic pigments, total soluble sugars and total free amino acids were made. At 5 days of water deprivation, the plants had reduced photosynthesis, stomatal conductance and transpiration. At that point, there was a statistical difference for the water potential at noon, pre-dawn, free amino acids and soluble sugars in plants that were subjected to stress. The behavior exhibited by Cryptostegia madagascariensis indicates that this species has a conservative profile, reducing their leaf area and promoting stomatal closure to conserve waterA introdução de espécies exóticas em comunidades naturais é, geralmente, mediada pela atividade humana. Um exemplo disso é a Cryptostegia madagascariensis, que se tornou invasora em quase todos os países nos quais foi introduzida. No Brasil, está invadindo áreas alagáveis do Nordeste, sendo conhecida como assassina das carnaubeiras (Copernicia prunifera). A espécie é altamente tolerante ao alagamento, mas também tem tolerância à seca. É necessário entender como ocorre a adaptação à seca para identificar a capacidade dessa planta para invadir novas áreas. Assim, o objetivo desse trabalho foi compreender a adaptação de C. madagascariensis a condições de baixa disponibilidade de água. O presente estudo foi conduzido em viveiro de mudas no delineamento em blocos casualizados no esquema de parcelas subdivididas, com quatro blocos. Nas parcelas, foram avaliados os regimes hídricos (irrigadas e estressadas) e as idades (4, 6 e 8 meses). Quando as plantas apresentaram senescência foliar, foi retomada a irrigação e selecionadas as folhas para serem feitas as análises bioquímicas. Foram feitas as análises de pigmentos fotossintéticos, açúcares solúveis totais e aminoácidos livres totais. Com cinco dias de estresse, as plantas apresentaram redução da fotossíntese, condutância estomática e transpiração. Nesse ponto, houve diferença estatística para o potencial hídrico ao meio dia, no pre-dawn, aminoácidos livres e açúcares solúveis nas plantas que foram submetidas ao estresse. O comportamento apresentado pela Cryptostegia madagascariensis indica que a espécie possui um perfil conservador, reduzindo sua área foliar e promovendo o fechamento estomático para conservar água no seu interiorCoordenação de Aperfeiçoamento de Pessoal de Nível SuperiorUniversidade Federal Rural do Semi-ÁridoBRCentro de Ciências Agrárias - CCAUFERSAPrograma de Pós-Graduação em FitotecniaDombroski, Jeferson Luiz DallabonaCPF:41974999149DOMBROSKI, Jeferson Luiz DallabonaSilva, Daniel ValadãoCPF:07015867613http://lattes.cnpq.br/2100406454919685Camacho, Ramiro Gustavo Valerahttp://lattes.cnpq.br/1079760233135463Saraiva, Jose Gidalto Oliveira2016-08-12T19:15:37Z2016-06-142016-02-22info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfapplication/pdfSARAIVA, Jose Gidalto Oliveira. Ecophysiology of Cryptostegia madagascariensis Bojer ex Decne subjected to water restriction. 2016. 50 f. Dissertação (Mestrado em Agricultura Tropical) - Universidade Federal Rural do Semi-Árido, Mossoró, 2016.https://repositorio.ufersa.edu.br/handle/tede/120porCC-BY-SAinfo:eu-repo/semantics/openAccessreponame:Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU)instname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSA2023-09-13T23:41:32Zoai:repositorio.ufersa.edu.br:tede/120Repositório Institucionalhttps://repositorio.ufersa.edu.br/PUBhttps://repositorio.ufersa.edu.br/server/oai/requestrepositorio@ufersa.edu.br || admrepositorio@ufersa.edu.bropendoar:2023-09-13T23:41:32Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) - Universidade Federal Rural do Semi-Árido (UFERSA)false |
dc.title.none.fl_str_mv |
Ecofisiologia de cryptostegia madagascariensis Bojer ex Decne submetida à restrição hídrica Ecophysiology of Cryptostegia madagascariensis Bojer ex Decne subjected to water restriction |
title |
Ecofisiologia de cryptostegia madagascariensis Bojer ex Decne submetida à restrição hídrica |
spellingShingle |
Ecofisiologia de cryptostegia madagascariensis Bojer ex Decne submetida à restrição hídrica Saraiva, Jose Gidalto Oliveira Ecofisiologia Bioquímica Estresse hídrico Fotossíntese Water stress Photosynthesis Biochemistry Photosynthesis CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
title_short |
Ecofisiologia de cryptostegia madagascariensis Bojer ex Decne submetida à restrição hídrica |
title_full |
Ecofisiologia de cryptostegia madagascariensis Bojer ex Decne submetida à restrição hídrica |
title_fullStr |
Ecofisiologia de cryptostegia madagascariensis Bojer ex Decne submetida à restrição hídrica |
title_full_unstemmed |
Ecofisiologia de cryptostegia madagascariensis Bojer ex Decne submetida à restrição hídrica |
title_sort |
Ecofisiologia de cryptostegia madagascariensis Bojer ex Decne submetida à restrição hídrica |
author |
Saraiva, Jose Gidalto Oliveira |
author_facet |
Saraiva, Jose Gidalto Oliveira |
author_role |
author |
dc.contributor.none.fl_str_mv |
Dombroski, Jeferson Luiz Dallabona CPF:41974999149 DOMBROSKI, Jeferson Luiz Dallabona Silva, Daniel Valadão CPF:07015867613 http://lattes.cnpq.br/2100406454919685 Camacho, Ramiro Gustavo Valera http://lattes.cnpq.br/1079760233135463 |
dc.contributor.author.fl_str_mv |
Saraiva, Jose Gidalto Oliveira |
dc.subject.por.fl_str_mv |
Ecofisiologia Bioquímica Estresse hídrico Fotossíntese Water stress Photosynthesis Biochemistry Photosynthesis CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
topic |
Ecofisiologia Bioquímica Estresse hídrico Fotossíntese Water stress Photosynthesis Biochemistry Photosynthesis CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
description |
The introduction of exotic species in natural communities is usually mediated by human activity. One example is Cryptostegia madagascariensis, species considered invasive in almost every country in which it was introduced. In Brazil, it is invading wetlands in the Northeast and is known as the Carnaubeiras (Copernicia prunifera) killer. The species is highly tolerant to flooding, but it also has drought tolerance. It is necessary to understand how adaptation to drought occurs, to identify the capacity of this plant to invade new areas. The objective of this work is to understand the adaptation of C. madagascariensis to low water availability. This study was conducted in the seedling nursery of the Department of Plant Sciences at the Federal Rural University of the Semi-Arid (UFERSA). It was adopted a randomized blocks design in subdivided plots, with four blocks. In the plots, the water treatments were placed (irrigated and stressed). The subplots were the plant sages (4, 6 and 8 months). When the plants showed leaf senescence, irrigation was resumed and leaves were selected for biochemical analyzes of photosynthetic pigments, total soluble sugars and total free amino acids were made. At 5 days of water deprivation, the plants had reduced photosynthesis, stomatal conductance and transpiration. At that point, there was a statistical difference for the water potential at noon, pre-dawn, free amino acids and soluble sugars in plants that were subjected to stress. The behavior exhibited by Cryptostegia madagascariensis indicates that this species has a conservative profile, reducing their leaf area and promoting stomatal closure to conserve water |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-08-12T19:15:37Z 2016-06-14 2016-02-22 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
SARAIVA, Jose Gidalto Oliveira. Ecophysiology of Cryptostegia madagascariensis Bojer ex Decne subjected to water restriction. 2016. 50 f. Dissertação (Mestrado em Agricultura Tropical) - Universidade Federal Rural do Semi-Árido, Mossoró, 2016. https://repositorio.ufersa.edu.br/handle/tede/120 |
identifier_str_mv |
SARAIVA, Jose Gidalto Oliveira. Ecophysiology of Cryptostegia madagascariensis Bojer ex Decne subjected to water restriction. 2016. 50 f. Dissertação (Mestrado em Agricultura Tropical) - Universidade Federal Rural do Semi-Árido, Mossoró, 2016. |
url |
https://repositorio.ufersa.edu.br/handle/tede/120 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
CC-BY-SA info:eu-repo/semantics/openAccess |
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CC-BY-SA |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido BR Centro de Ciências Agrárias - CCA UFERSA Programa de Pós-Graduação em Fitotecnia |
publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido BR Centro de Ciências Agrárias - CCA UFERSA Programa de Pós-Graduação em Fitotecnia |
dc.source.none.fl_str_mv |
reponame:Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) instname:Universidade Federal Rural do Semi-Árido (UFERSA) instacron:UFERSA |
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Universidade Federal Rural do Semi-Árido (UFERSA) |
instacron_str |
UFERSA |
institution |
UFERSA |
reponame_str |
Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) |
collection |
Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) |
repository.name.fl_str_mv |
Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) - Universidade Federal Rural do Semi-Árido (UFERSA) |
repository.mail.fl_str_mv |
repositorio@ufersa.edu.br || admrepositorio@ufersa.edu.br |
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1809747446015721472 |