Resposta da mamoneira (Ricinus communis L., cv. Al Guarany 2002) a diferentes tensões de água no solo.
Autor(a) principal: | |
---|---|
Data de Publicação: | 2011 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFPel - Guaiaca |
Texto Completo: | http://repositorio.ufpel.edu.br/handle/ri/2433 |
Resumo: | With the incentive of biodiesel production in Brazil, the castor bean crop has gained importance in the agricultural scenario, mainly because its seeds have high oil content of good quality. Being considered drought resistant plant in most reports of the literature, this is a controversial aspect because under water deficit conditions low yield has been recorded. Therefore this study had the objective to evaluate the growth and development of the castor bean submitted to different soil water tensions. A greenhouse experiment was carried out with plants of the cultivar Al Guarany 2002. Plants were cultivated in pots with one tensiometer installed at the 0.15 m depth to monitor the water soil tension. The experimental design was completely randomized with three treatments and four replications: 1- water tension maintained at 0.01 MPa; 2 when the soil water tension reached 0.03 MPa, water was added to until returning 0.01 MPa; 3 when the soil water tension reached 0.06 MPa, water was added to until returning to 0.01 MPa. Between 30 and 105 days after plant emergence (DAE) plant transpiration, leaf area, plant height and stem diameter were biweekly evaluated. The time lapse to onset of flowering and height of insertion of the first raceme were evaluated. Physiological parameters such as leaf water potential, leaf firmness and stomatal resistance were measured at 105 DAE. Results show that increasing soil water tension decreased the transpiration and growth rates of the castor bean plant. The time to flowering and height of insertion of the first raceme were greater for plants submitted to lower soil water tension. The leaf water potential and leaf firmness decreased as the soil water tension decreased. As soil water tension increased the stomatal resistance increased mainly with the rise of the atmosphere evaporative demand. Keywords: transpiration, water stress, growth e development. |
id |
UFPL_cbc4cead9457265ce2c135205c0539e7 |
---|---|
oai_identifier_str |
oai:guaiaca.ufpel.edu.br:123456789/2433 |
network_acronym_str |
UFPL |
network_name_str |
Repositório Institucional da UFPel - Guaiaca |
repository_id_str |
|
spelling |
http://lattes.cnpq.br/6165552562992388http://lattes.cnpq.br/9067196302691355Reisser Júnior, Carloshttp://lattes.cnpq.br/3835688748235091Timm, Luís CarlosPinto, Marília Alves Brito2014-08-20T14:36:54Z2012-08-062014-08-20T14:36:54Z2011-03-04PINTO, Marília Alves Brito. Resposta da mamoneira (Ricinus communis L., cv. Al Guarany 2002) a diferentes tensões de água no solo. 2011. 64 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Pelotas, Pelotas, 2011.http://repositorio.ufpel.edu.br/handle/ri/2433With the incentive of biodiesel production in Brazil, the castor bean crop has gained importance in the agricultural scenario, mainly because its seeds have high oil content of good quality. Being considered drought resistant plant in most reports of the literature, this is a controversial aspect because under water deficit conditions low yield has been recorded. Therefore this study had the objective to evaluate the growth and development of the castor bean submitted to different soil water tensions. A greenhouse experiment was carried out with plants of the cultivar Al Guarany 2002. Plants were cultivated in pots with one tensiometer installed at the 0.15 m depth to monitor the water soil tension. The experimental design was completely randomized with three treatments and four replications: 1- water tension maintained at 0.01 MPa; 2 when the soil water tension reached 0.03 MPa, water was added to until returning 0.01 MPa; 3 when the soil water tension reached 0.06 MPa, water was added to until returning to 0.01 MPa. Between 30 and 105 days after plant emergence (DAE) plant transpiration, leaf area, plant height and stem diameter were biweekly evaluated. The time lapse to onset of flowering and height of insertion of the first raceme were evaluated. Physiological parameters such as leaf water potential, leaf firmness and stomatal resistance were measured at 105 DAE. Results show that increasing soil water tension decreased the transpiration and growth rates of the castor bean plant. The time to flowering and height of insertion of the first raceme were greater for plants submitted to lower soil water tension. The leaf water potential and leaf firmness decreased as the soil water tension decreased. As soil water tension increased the stomatal resistance increased mainly with the rise of the atmosphere evaporative demand. Keywords: transpiration, water stress, growth e development.Com o incentivo à produção de biodiesel no Brasil, a cultura da mamona ganhou importância no cenário agrícola, visto que suas sementes tem alto teor de óleo de boa qualidade. Aliada a estas características está a resistência à seca, que envolve um aspecto controverso, pois o que se tem observado são baixas produtividades em condições de déficit hídrico. Em virtude disso, este trabalho teve como objetivo avaliar a resposta da cultura da mamona a diferentes tensões de água no solo, determinando o efeito das condições de déficit hídrico no crescimento e desenvolvimento da planta. Para tal, foi desenvolvido um experimento em ambiente protegido, com plantas de mamona da cultivar Al Guarany 2002. As plantas foram cultivadas em vasos nos quais foram instalados tensiômetros a 0,15 m de profundidade para monitoramento da tensão de água no solo. O delineamento experimental foi inteiramente casualizado, com três tratamentos e quatro repetições: 1 tensão mantida em 0,01 MPa; 2 quando a tensãochegava a 0,03 MPa as plantas eram irrigadas para retorna-la a 0,01 MPa; 3 quando a tensão chegava a 0,06 MPa as plantas eram irrigadas pararetorna-la a 0,01 MPa. No intervalo entre 30 e 105 dias após a emergência (DAE) foram avaliadas quinzenalmente a transpiração, a área foliar, a altura da planta e o diâmetro caulinar. Determinou-se ainda o tempo para início da floração e altura de inserção do primeiro racemo. Aos 105 DAE foram realizadas as avaliações dos parâmetros fisiológicos, potencial de água na folha, firmeza da folha e resistência estomática. Os resultados indicam que a mamona é sensível ao aumento da tensão de água no solo, sendo que em condições de maior tensão ela diminui a transpiração e o seu crescimento. O tempo para floração e a altura de inserção do primeiro racemo foram maiores nas plantas submetidas a menores tensões de água. O potencial de água na folha e a sua firmeza diminuiram com o aumento da tensão de água. O aumento da tensão de água no substrato aumentou a resistência estomática nas folhas da mamoneira, principalmente com o aumento da demanda evaporativa da atmosfera.application/pdfporUniversidade Federal de PelotasPrograma de Pós-Graduação em AgronomiaUFPelBRFaculdade de Agronomia Eliseu MacielMamoneiraTranspiraçãoEstresse hídricoCrescimentoDesenvolvimentoRicinus communisTranspirationWater stressGrowthDevelopmentCNPQ::CIENCIAS AGRARIAS::AGRONOMIAResposta da mamoneira (Ricinus communis L., cv. Al Guarany 2002) a diferentes tensões de água no solo.Response of the castor bean (Ricinus communis L., cv. Al Guarany 2002) to different soil water tensions.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFPel - Guaiacainstname:Universidade Federal de Pelotas (UFPEL)instacron:UFPELORIGINALDissertacao_Marilia_Alves_Brito_Pinto.pdfapplication/pdf1469883http://guaiaca.ufpel.edu.br/xmlui/bitstream/123456789/2433/1/Dissertacao_Marilia_Alves_Brito_Pinto.pdf0e148abbe007d166eb1aa6a2992757acMD51open accessTEXTDissertacao_Marilia_Alves_Brito_Pinto.pdf.txtDissertacao_Marilia_Alves_Brito_Pinto.pdf.txtExtracted Texttext/plain89228http://guaiaca.ufpel.edu.br/xmlui/bitstream/123456789/2433/2/Dissertacao_Marilia_Alves_Brito_Pinto.pdf.txt3f130c83eb88d1f899abb860554281a3MD52open accessTHUMBNAILDissertacao_Marilia_Alves_Brito_Pinto.pdf.jpgDissertacao_Marilia_Alves_Brito_Pinto.pdf.jpgGenerated Thumbnailimage/jpeg1468http://guaiaca.ufpel.edu.br/xmlui/bitstream/123456789/2433/3/Dissertacao_Marilia_Alves_Brito_Pinto.pdf.jpg7ce472465ab2d9cdaf2e77aceabe1919MD53open access123456789/24332023-01-13 20:16:01.664open accessoai:guaiaca.ufpel.edu.br:123456789/2433Repositório InstitucionalPUBhttp://repositorio.ufpel.edu.br/oai/requestrippel@ufpel.edu.br || repositorio@ufpel.edu.br || aline.batista@ufpel.edu.bropendoar:2023-01-13T23:16:01Repositório Institucional da UFPel - Guaiaca - Universidade Federal de Pelotas (UFPEL)false |
dc.title.por.fl_str_mv |
Resposta da mamoneira (Ricinus communis L., cv. Al Guarany 2002) a diferentes tensões de água no solo. |
dc.title.alternative.eng.fl_str_mv |
Response of the castor bean (Ricinus communis L., cv. Al Guarany 2002) to different soil water tensions. |
title |
Resposta da mamoneira (Ricinus communis L., cv. Al Guarany 2002) a diferentes tensões de água no solo. |
spellingShingle |
Resposta da mamoneira (Ricinus communis L., cv. Al Guarany 2002) a diferentes tensões de água no solo. Pinto, Marília Alves Brito Mamoneira Transpiração Estresse hídrico Crescimento Desenvolvimento Ricinus communis Transpiration Water stress Growth Development CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
title_short |
Resposta da mamoneira (Ricinus communis L., cv. Al Guarany 2002) a diferentes tensões de água no solo. |
title_full |
Resposta da mamoneira (Ricinus communis L., cv. Al Guarany 2002) a diferentes tensões de água no solo. |
title_fullStr |
Resposta da mamoneira (Ricinus communis L., cv. Al Guarany 2002) a diferentes tensões de água no solo. |
title_full_unstemmed |
Resposta da mamoneira (Ricinus communis L., cv. Al Guarany 2002) a diferentes tensões de água no solo. |
title_sort |
Resposta da mamoneira (Ricinus communis L., cv. Al Guarany 2002) a diferentes tensões de água no solo. |
author |
Pinto, Marília Alves Brito |
author_facet |
Pinto, Marília Alves Brito |
author_role |
author |
dc.contributor.authorLattes.por.fl_str_mv |
http://lattes.cnpq.br/6165552562992388 |
dc.contributor.advisorLattes.por.fl_str_mv |
http://lattes.cnpq.br/9067196302691355 |
dc.contributor.advisor-co1.fl_str_mv |
Reisser Júnior, Carlos |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/3835688748235091 |
dc.contributor.advisor1.fl_str_mv |
Timm, Luís Carlos |
dc.contributor.author.fl_str_mv |
Pinto, Marília Alves Brito |
contributor_str_mv |
Reisser Júnior, Carlos Timm, Luís Carlos |
dc.subject.por.fl_str_mv |
Mamoneira Transpiração Estresse hídrico Crescimento Desenvolvimento |
topic |
Mamoneira Transpiração Estresse hídrico Crescimento Desenvolvimento Ricinus communis Transpiration Water stress Growth Development CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
dc.subject.eng.fl_str_mv |
Ricinus communis Transpiration Water stress Growth Development |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
description |
With the incentive of biodiesel production in Brazil, the castor bean crop has gained importance in the agricultural scenario, mainly because its seeds have high oil content of good quality. Being considered drought resistant plant in most reports of the literature, this is a controversial aspect because under water deficit conditions low yield has been recorded. Therefore this study had the objective to evaluate the growth and development of the castor bean submitted to different soil water tensions. A greenhouse experiment was carried out with plants of the cultivar Al Guarany 2002. Plants were cultivated in pots with one tensiometer installed at the 0.15 m depth to monitor the water soil tension. The experimental design was completely randomized with three treatments and four replications: 1- water tension maintained at 0.01 MPa; 2 when the soil water tension reached 0.03 MPa, water was added to until returning 0.01 MPa; 3 when the soil water tension reached 0.06 MPa, water was added to until returning to 0.01 MPa. Between 30 and 105 days after plant emergence (DAE) plant transpiration, leaf area, plant height and stem diameter were biweekly evaluated. The time lapse to onset of flowering and height of insertion of the first raceme were evaluated. Physiological parameters such as leaf water potential, leaf firmness and stomatal resistance were measured at 105 DAE. Results show that increasing soil water tension decreased the transpiration and growth rates of the castor bean plant. The time to flowering and height of insertion of the first raceme were greater for plants submitted to lower soil water tension. The leaf water potential and leaf firmness decreased as the soil water tension decreased. As soil water tension increased the stomatal resistance increased mainly with the rise of the atmosphere evaporative demand. Keywords: transpiration, water stress, growth e development. |
publishDate |
2011 |
dc.date.issued.fl_str_mv |
2011-03-04 |
dc.date.available.fl_str_mv |
2012-08-06 2014-08-20T14:36:54Z |
dc.date.accessioned.fl_str_mv |
2014-08-20T14:36:54Z |
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.citation.fl_str_mv |
PINTO, Marília Alves Brito. Resposta da mamoneira (Ricinus communis L., cv. Al Guarany 2002) a diferentes tensões de água no solo. 2011. 64 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Pelotas, Pelotas, 2011. |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufpel.edu.br/handle/ri/2433 |
identifier_str_mv |
PINTO, Marília Alves Brito. Resposta da mamoneira (Ricinus communis L., cv. Al Guarany 2002) a diferentes tensões de água no solo. 2011. 64 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Pelotas, Pelotas, 2011. |
url |
http://repositorio.ufpel.edu.br/handle/ri/2433 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Pelotas |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Agronomia |
dc.publisher.initials.fl_str_mv |
UFPel |
dc.publisher.country.fl_str_mv |
BR |
dc.publisher.department.fl_str_mv |
Faculdade de Agronomia Eliseu Maciel |
publisher.none.fl_str_mv |
Universidade Federal de Pelotas |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFPel - Guaiaca instname:Universidade Federal de Pelotas (UFPEL) instacron:UFPEL |
instname_str |
Universidade Federal de Pelotas (UFPEL) |
instacron_str |
UFPEL |
institution |
UFPEL |
reponame_str |
Repositório Institucional da UFPel - Guaiaca |
collection |
Repositório Institucional da UFPel - Guaiaca |
bitstream.url.fl_str_mv |
http://guaiaca.ufpel.edu.br/xmlui/bitstream/123456789/2433/1/Dissertacao_Marilia_Alves_Brito_Pinto.pdf http://guaiaca.ufpel.edu.br/xmlui/bitstream/123456789/2433/2/Dissertacao_Marilia_Alves_Brito_Pinto.pdf.txt http://guaiaca.ufpel.edu.br/xmlui/bitstream/123456789/2433/3/Dissertacao_Marilia_Alves_Brito_Pinto.pdf.jpg |
bitstream.checksum.fl_str_mv |
0e148abbe007d166eb1aa6a2992757ac 3f130c83eb88d1f899abb860554281a3 7ce472465ab2d9cdaf2e77aceabe1919 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFPel - Guaiaca - Universidade Federal de Pelotas (UFPEL) |
repository.mail.fl_str_mv |
rippel@ufpel.edu.br || repositorio@ufpel.edu.br || aline.batista@ufpel.edu.br |
_version_ |
1801846900697071616 |