Períodos de estratificação na germinação de sementes de alface (Lactuca sativa L.) sob diferentes condições de luz e temperatura

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dc.contributor.authorBufalo, Jennifer [UNESP]
dc.contributor.authorEsteves Amaro, Amanda Cristina [UNESP]
dc.contributor.authorde Araujo, Humberto Sampaio
dc.contributor.authorCorsato, Jaqueline Malagutti [UNESP]
dc.contributor.authorOno, Elizabeth Orika [UNESP]
dc.contributor.authorFerreira, Gisela [UNESP]
dc.contributor.authorRodrigues, Joao Domingos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionAgência Paulista de Tecnologia dos Agronegócios (APTA)
dc.date.accessioned2014-05-20T13:48:50Z
dc.date.available2014-05-20T13:48:50Z
dc.date.issued2012-01-01
dc.description.abstractLettuce seeds have a high sensitivity to variations in humidity and temperature of the environment where they germinate, therefore, studies with the aim of improve the germination and physiological performance of these have been conducted. Thus, the study aimed to evaluate the efficiency of pre-germination treatment stratification (5 degrees C) for different periods, and increase the uniformity of germination of lettuce seeds submitted to different conditions of light and germination temperatures. In the pre-germinative treatment, the seeds of lettuce (Lactuca sativa L.) var. American Great Lakes were placed in plastic boxes dark of the type "gerbox" and subjected to temperature stratification of 5 degrees C and the dark for 0, 4, 8, 12 and 16 hours. After periods of stratification the seeds were submitted to germination tests which were transferred to plastic boxes type "gerbox" transparent (constant light) and dark (no light) and were maintained in a germination chamber B.O.D with light constant at temperatures of 20, 25, 30 and 35 degrees C. The design used was the entirely randomized with four repetitions, in a factorial outline 5x4x2, five pre-germinative treatments, four germination temperatures and two light conditions. Stratification for 16 hours and temperatures of 20 and 25 degrees C stimulated the germination of lettuce seeds, providing a higher germination percentage, germination speed index and minor mean germination time. The presence of light resulted in increased germination at 0, 4, 8 and 12 hours of stratification.en
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias, UNESP, Campus Botucatu, SP, Brazil
dc.description.affiliationUNESP, Fac Ciencias Agron, Campus Botucatu, SP, Brazil
dc.description.affiliationAPTA, Presidente Prudente, SP, Brazil
dc.description.affiliationUNESP, Inst Biociencias, Dept Bot, Campus Botucatu, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias, UNESP, Campus Botucatu, SP, Brazil
dc.description.affiliationUnespUNESP, Fac Ciencias Agron, Campus Botucatu, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Biociencias, Dept Bot, Campus Botucatu, SP, Brazil
dc.format.extent931-940
dc.identifierhttp://dx.doi.org/10.5433/1679-0359.2012v33n3p931
dc.identifier.citationSemina-ciencias Agrarias. Londrina: Universidade Estadual de Londrina (UEL), v. 33, n. 3, p. 931-940, 2012.
dc.identifier.doi10.5433/1679-0359.2012v33n3p931
dc.identifier.fileWOS000307003200008.pdf
dc.identifier.issn1676-546X
dc.identifier.lattes7904769201845860
dc.identifier.lattes9804707674172774
dc.identifier.lattes4211432128816409
dc.identifier.urihttp://hdl.handle.net/11449/17384
dc.identifier.wosWOS:000307003200008
dc.language.isopor
dc.publisherUniversidade Estadual de Londrina (UEL)
dc.relation.ispartofSemina: Ciências Agrárias
dc.relation.ispartofjcr0.349
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectLactuca sativaen
dc.subjectlighten
dc.subjecttemperatureen
dc.titlePeríodos de estratificação na germinação de sementes de alface (Lactuca sativa L.) sob diferentes condições de luz e temperaturapt
dc.title.alternativeStratification periods in seeds germination of lettuce (Lactuca sativa L.) under different conditions of light and temperatureen
dc.typeArtigo
dcterms.licensehttp://www.uel.br/revistas/uel/index.php/semagrarias/about/editorialPolicies#openAccessPolicy
dcterms.rightsHolderUniversidade Estadual de Londrina (UEL)
unesp.author.lattes7904769201845860
unesp.author.lattes9804707674172774
unesp.author.lattes4211432128816409
unesp.author.orcid0000-0002-6672-1105[1]
unesp.author.orcid0000-0001-6401-3984[2]
unesp.author.orcid0000-0001-7965-4696[5]
unesp.author.orcid0000-0001-7965-4696[7]
unesp.author.orcid0000-0002-3065-2152[6]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt

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Artigos - Botânica - IBB