Aspectos fisiológicos e produtivos de gramíneas adaptadas ao semiárido submetidas a déficit hídrico

Detalhes bibliográficos
Autor(a) principal: CAVALCANTI, Guilherme Andrade
Data de Publicação: 2019
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações da UFRPE
Texto Completo: http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/8185
Resumo: In environments of semi-arid regions, where water restriction is the main limiting factor for agricultural production, cultivation of drought tolerant species is one of the most viable alternatives to food and dry matter production. One of the main aptitudes in these areas is livestock, however, it is necessary to have fodder plants capable of surviving and producing biomass under drought conditions. In order to study alternatives for forage production in semi-arid environments, the present study aimed to evaluate the levels of photosynthetic pigments in three grass species tolerant to water deficit. The experiment was carried out in a greenhouse at the Universidade Federal Rural de Pernambuco, Recife-PE. Plants of Cenchrus ciliaris, Urochloa mosambicensis, Andropogon gayanus were grown in six levels of pot capacity (100, 85, 70, 55, 40 e 25% of pot capacity - PC) with four evaluation times (5, 15, 25, 35 days after stress - DAS) for the variables related to the photosynthetic pigments and two times(20 and 40 DAS) for the gas exchanges. The experimental design was done in randomized blocks with a triple factorial arrangement. The decrease in moisture levels implied a significant reduction of most of the variables related to the gas exchange, suggesting that this could be one of the first processes to be impaired in the plant with the reduction of the availability of water in the soil. The chlorophyll a and b contents decreased throughout the evaluations while the fluorescence parameters showed higher overload on the remaining chlorophylls, most evidently from the 25 DAE in both cuts. Urochloa mosambicensis and Andropogon guayanus, were the most promising species.
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spelling FREIRE, Maria Betânia Galvão dos SantosFERNANDES, Josimar GurgelFREIRE, Maria Betânia Galvão dos SantosSANTOS JÚNIOR, José AmiltonCASTRO, Natália Maria Corte Real dehttp://lattes.cnpq.br/9817285684880772CAVALCANTI, Guilherme Andrade2019-09-04T13:09:54Z2019-05-09CAVALCANTI, Guilherme Andrade. Aspectos fisiológicos e produtivos de gramíneas adaptadas ao semiárido submetidas a déficit hídrico. 2019. 84 f. Dissertação (Programa de Pós-Graduação em Ciência do Solo) - Universidade Federal Rural de Pernambuco, Recife.http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/8185In environments of semi-arid regions, where water restriction is the main limiting factor for agricultural production, cultivation of drought tolerant species is one of the most viable alternatives to food and dry matter production. One of the main aptitudes in these areas is livestock, however, it is necessary to have fodder plants capable of surviving and producing biomass under drought conditions. In order to study alternatives for forage production in semi-arid environments, the present study aimed to evaluate the levels of photosynthetic pigments in three grass species tolerant to water deficit. The experiment was carried out in a greenhouse at the Universidade Federal Rural de Pernambuco, Recife-PE. Plants of Cenchrus ciliaris, Urochloa mosambicensis, Andropogon gayanus were grown in six levels of pot capacity (100, 85, 70, 55, 40 e 25% of pot capacity - PC) with four evaluation times (5, 15, 25, 35 days after stress - DAS) for the variables related to the photosynthetic pigments and two times(20 and 40 DAS) for the gas exchanges. The experimental design was done in randomized blocks with a triple factorial arrangement. The decrease in moisture levels implied a significant reduction of most of the variables related to the gas exchange, suggesting that this could be one of the first processes to be impaired in the plant with the reduction of the availability of water in the soil. The chlorophyll a and b contents decreased throughout the evaluations while the fluorescence parameters showed higher overload on the remaining chlorophylls, most evidently from the 25 DAE in both cuts. Urochloa mosambicensis and Andropogon guayanus, were the most promising species.Em ambientes sob clima semiárido, onde a restrição hídrica é o principal fator limitante à produção agrícola, o cultivo de espécies tolerantes à seca é uma das alternativas mais viáveis à produção de alimentos e de matéria seca. Uma das principais aptidões nessas áreas é a pecuária, no entanto, é preciso dispor de plantas forrageiras capazes de sobreviver e produzir biomassa em condições de seca. Com o intuito de estudar alternativas para a produção de forragem em regiões semiáridas, a presente pesquisa objetivou avaliar o comportamento fisiológico de três espécies de gramíneas tolerantes ao déficit hídrico. O experimento foi realizado em casa de vegetação da Universidade Federal Rural de Pernambuco, Recife-PE, onde foram cultivadas plantas de Cenchrus ciliaris, Urochloa mosambicensis, Andropogon gayanus submetidas a seis níveis de capacidade máxima de retenção de água no solo (100, 85, 70, 55, 40 e 25% do máximo), com avaliações em quatro tempos (5, 15, 25, 35 dias após o estresse - DAE) para as variáveis relacionadas aos pigmentos fotossintéticos, e dois tempos (20 e 40 DAE) para as trocas gasosas. O delineamento experimental foi em blocos ao acaso em arranjo fatorial triplo. A diminuição dos níveis de umidade implicou em redução significativa da maior parte das variáveis relacionadas às trocas gasosas, sugerindo que este seria um dos primeiros processos a serem prejudicados na planta com a redução da disponibilidade de água no solo. Os teores de clorofila a e b foram reduzidos com o tempo de estresse, enquanto que as variáveis de fluorescência tiveram resultados mais evidentes a partir dos 25 DAE em ambos os cortes. U. mosambicensis e A. guayanus, mostraram ser as espécies mais promissoras.Submitted by Mario BC (mario@bc.ufrpe.br) on 2019-09-04T13:09:54Z No. of bitstreams: 1 Guilherme Andrade Cavalcanti.pdf: 1145638 bytes, checksum: 9f607dc4bad45c28f09820512ae24503 (MD5)Made available in DSpace on 2019-09-04T13:09:54Z (GMT). No. of bitstreams: 1 Guilherme Andrade Cavalcanti.pdf: 1145638 bytes, checksum: 9f607dc4bad45c28f09820512ae24503 (MD5) Previous issue date: 2019-05-09application/pdfporUniversidade Federal Rural de PernambucoPrograma de Pós-Graduação em Ciência do SoloUFRPEBrasilDepartamento de AgronomiaPlanta forrageiraEstresse hídricoSemiáridoAGRONOMIA::CIENCIA DO SOLOAspectos fisiológicos e produtivos de gramíneas adaptadas ao semiárido submetidas a déficit hídricoPhysiological and productive aspects of grasses adapted to the semi-arid region submitted to water deficitinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis8551734419043507650600600600-6800553879972229205-5919840527232375671info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFRPEinstname:Universidade Federal Rural de Pernambuco (UFRPE)instacron:UFRPEORIGINALGuilherme Andrade Cavalcanti.pdfGuilherme Andrade Cavalcanti.pdfapplication/pdf1145638http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/8185/2/Guilherme+Andrade+Cavalcanti.pdf9f607dc4bad45c28f09820512ae24503MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-82165http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/8185/1/license.txtbd3efa91386c1718a7f26a329fdcb468MD51tede2/81852019-09-04 10:09:54.833oai:tede2: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Biblioteca Digital de Teses e Dissertaçõeshttp://www.tede2.ufrpe.br:8080/tede/PUBhttp://www.tede2.ufrpe.br:8080/oai/requestbdtd@ufrpe.br ||bdtd@ufrpe.bropendoar:2024-05-28T12:36:38.780625Biblioteca Digital de Teses e Dissertações da UFRPE - Universidade Federal Rural de Pernambuco (UFRPE)false
dc.title.por.fl_str_mv Aspectos fisiológicos e produtivos de gramíneas adaptadas ao semiárido submetidas a déficit hídrico
dc.title.alternative.eng.fl_str_mv Physiological and productive aspects of grasses adapted to the semi-arid region submitted to water deficit
title Aspectos fisiológicos e produtivos de gramíneas adaptadas ao semiárido submetidas a déficit hídrico
spellingShingle Aspectos fisiológicos e produtivos de gramíneas adaptadas ao semiárido submetidas a déficit hídrico
CAVALCANTI, Guilherme Andrade
Planta forrageira
Estresse hídrico
Semiárido
AGRONOMIA::CIENCIA DO SOLO
title_short Aspectos fisiológicos e produtivos de gramíneas adaptadas ao semiárido submetidas a déficit hídrico
title_full Aspectos fisiológicos e produtivos de gramíneas adaptadas ao semiárido submetidas a déficit hídrico
title_fullStr Aspectos fisiológicos e produtivos de gramíneas adaptadas ao semiárido submetidas a déficit hídrico
title_full_unstemmed Aspectos fisiológicos e produtivos de gramíneas adaptadas ao semiárido submetidas a déficit hídrico
title_sort Aspectos fisiológicos e produtivos de gramíneas adaptadas ao semiárido submetidas a déficit hídrico
author CAVALCANTI, Guilherme Andrade
author_facet CAVALCANTI, Guilherme Andrade
author_role author
dc.contributor.advisor1.fl_str_mv FREIRE, Maria Betânia Galvão dos Santos
dc.contributor.advisor-co1.fl_str_mv FERNANDES, Josimar Gurgel
dc.contributor.referee1.fl_str_mv FREIRE, Maria Betânia Galvão dos Santos
dc.contributor.referee2.fl_str_mv SANTOS JÚNIOR, José Amilton
dc.contributor.referee3.fl_str_mv CASTRO, Natália Maria Corte Real de
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/9817285684880772
dc.contributor.author.fl_str_mv CAVALCANTI, Guilherme Andrade
contributor_str_mv FREIRE, Maria Betânia Galvão dos Santos
FERNANDES, Josimar Gurgel
FREIRE, Maria Betânia Galvão dos Santos
SANTOS JÚNIOR, José Amilton
CASTRO, Natália Maria Corte Real de
dc.subject.por.fl_str_mv Planta forrageira
Estresse hídrico
Semiárido
topic Planta forrageira
Estresse hídrico
Semiárido
AGRONOMIA::CIENCIA DO SOLO
dc.subject.cnpq.fl_str_mv AGRONOMIA::CIENCIA DO SOLO
description In environments of semi-arid regions, where water restriction is the main limiting factor for agricultural production, cultivation of drought tolerant species is one of the most viable alternatives to food and dry matter production. One of the main aptitudes in these areas is livestock, however, it is necessary to have fodder plants capable of surviving and producing biomass under drought conditions. In order to study alternatives for forage production in semi-arid environments, the present study aimed to evaluate the levels of photosynthetic pigments in three grass species tolerant to water deficit. The experiment was carried out in a greenhouse at the Universidade Federal Rural de Pernambuco, Recife-PE. Plants of Cenchrus ciliaris, Urochloa mosambicensis, Andropogon gayanus were grown in six levels of pot capacity (100, 85, 70, 55, 40 e 25% of pot capacity - PC) with four evaluation times (5, 15, 25, 35 days after stress - DAS) for the variables related to the photosynthetic pigments and two times(20 and 40 DAS) for the gas exchanges. The experimental design was done in randomized blocks with a triple factorial arrangement. The decrease in moisture levels implied a significant reduction of most of the variables related to the gas exchange, suggesting that this could be one of the first processes to be impaired in the plant with the reduction of the availability of water in the soil. The chlorophyll a and b contents decreased throughout the evaluations while the fluorescence parameters showed higher overload on the remaining chlorophylls, most evidently from the 25 DAE in both cuts. Urochloa mosambicensis and Andropogon guayanus, were the most promising species.
publishDate 2019
dc.date.accessioned.fl_str_mv 2019-09-04T13:09:54Z
dc.date.issued.fl_str_mv 2019-05-09
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
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dc.identifier.citation.fl_str_mv CAVALCANTI, Guilherme Andrade. Aspectos fisiológicos e produtivos de gramíneas adaptadas ao semiárido submetidas a déficit hídrico. 2019. 84 f. Dissertação (Programa de Pós-Graduação em Ciência do Solo) - Universidade Federal Rural de Pernambuco, Recife.
dc.identifier.uri.fl_str_mv http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/8185
identifier_str_mv CAVALCANTI, Guilherme Andrade. Aspectos fisiológicos e produtivos de gramíneas adaptadas ao semiárido submetidas a déficit hídrico. 2019. 84 f. Dissertação (Programa de Pós-Graduação em Ciência do Solo) - Universidade Federal Rural de Pernambuco, Recife.
url http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/8185
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600
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dc.publisher.none.fl_str_mv Universidade Federal Rural de Pernambuco
dc.publisher.program.fl_str_mv Programa de Pós-Graduação em Ciência do Solo
dc.publisher.initials.fl_str_mv UFRPE
dc.publisher.country.fl_str_mv Brasil
dc.publisher.department.fl_str_mv Departamento de Agronomia
publisher.none.fl_str_mv Universidade Federal Rural de Pernambuco
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