Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/774280
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dc.contributor.authorNASCIMENTO, W. M.
dc.date.accessioned2024-10-23T20:53:48Z-
dc.date.available2024-10-23T20:53:48Z-
dc.date.created2003-08-11
dc.date.issued2003
dc.identifier.citationScientia Agrícola, Piracicaba, v. 60, n. 3, p. 477-480, Jul./Sep. 2003.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/774280-
dc.descriptionLettuce (Lactuca sativa L.) seed germination is strongly temperature dependent and under high temperatures, germination of most of genotypes can be erratic or completely inhibited. Lettuce seeds of ëDark Green Bostoní (DGB) were incubated at temperatures ranging from 15° to 35°C at light and dark conditions. Other seeds were imbibed in dark at 20°; 25°; 30°; and 35°C for 8 and 16 hours and then transferred to 20 or 35°C, in dark. Seeds were also incubated at constant temperature of 20° and 35 °C, in the dark, as control. In another treatment, seeds were primed for 3 days at 15°C with constant light. DGB lettuce seeds required light to germinate adequately at temperatures above 25°C. Seeds incubated at 20°C had 97% germination, whereas seeds incubated at 35°C did not germinate. Seeds imbibed at 20°C for 8 and 16 hours had germination. At 35°C, seeds imbibed initially at 20°C for 8 and 16 hours, had 89 and 97% germination, respectively. Seeds imbibed at 25°C for 16 hours, germinated satisfactory at 35°C. High temperatures of imbibition led to no germination. Primed and non-primed seeds had 100% germination at 20°C. Primed seeds had 100% germination at 35°C, whereas non-primed seeds germinate only 4%. The first hours of imbibition are very critical for lettuce seed germination at high temperatures.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectCultivar Dark Green Boston
dc.subjectCondicionamento osmótico
dc.titlePreventing thermoinhibition in a thermosensitive lettuce genotype by seed imbibition at low temperature.
dc.typeArtigo de periódico
dc.subject.thesagroAlface
dc.subject.thesagroDormência
dc.subject.thesagroGerminação
dc.subject.thesagroLactuca Sativa
dc.subject.thesagroSemente
dc.subject.thesagroTemperatura
riaa.ainfo.id774280
riaa.ainfo.lastupdate2024-10-23
dc.contributor.institutionEmbrapa Hortaliças, Brasília, DF.
Appears in Collections:Artigo em periódico indexado (CNPH)

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