Seed germination of Echinopsis schickendantzii (Cactaceae): the effects of constant and alternating temperatures

The effects of constant and alternating temperatures on seed germination in the Cactaceae have been reported to vary, probably as a result of the different temperature regimes used and the species considered. We determined the cardinal temperatures for, and evaluated the effects of a wide range of c...

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Detalles Bibliográficos
Autores: Ortega Baes, Francisco Pablo, Galindez, Guadalupe, Sühring, Silvia Susana, Rojas Aréchiga, Mariana, Daws, M. I., Pritchard, H. W.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2011
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/14439
Acceso en línea:http://hdl.handle.net/11336/14439
Access Level:acceso abierto
Palabra clave:Cactaceae
Seed Germination
Temperature Effects
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
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spelling Seed germination of Echinopsis schickendantzii (Cactaceae): the effects of constant and alternating temperaturesOrtega Baes, Francisco PabloGalindez, GuadalupeSühring, Silvia SusanaRojas Aréchiga, MarianaDaws, M. I.Pritchard, H. W.CactaceaeSeed GerminationTemperature Effectshttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The effects of constant and alternating temperatures on seed germination in the Cactaceae have been reported to vary, probably as a result of the different temperature regimes used and the species considered. We determined the cardinal temperatures for, and evaluated the effects of a wide range of constant and alternating temperatures on, seed germination of the South American cactus, Echinopsis schickendantzii Web. The base, optimum and maximum temperatures were 7°C, 26.8°C and 49°C, respectively. The proportion of seeds that germinated and the germination rates were not only significantly different at constant and alternating temperatures but also among all temperature regimes considered. The highest proportion of seeds to germinate occurred at 15°, 20°, 30° and 30/15°C whereas the highest germination rates occurred at 25°, 30°, 30/20°, 35/20° and 40/25°C, with no significant differences between the highest values at constant and alternating temperatures. In the suboptimal temperature range for germination rate, the thermal time to 50% germination was 98°C-days. The results indicate that the seeds have no obligate requirement for alternating temperature for germination.Fil: Ortega Baes, Francisco Pablo. Universidad Nacional de Salta. Facultad de Cs.naturales. Escuela de Agronomia. Laboratorio de Investigaciones Botanicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Galindez, Guadalupe. Instituto Nacional de Tecnología Agropecuaria. Centro Nacional de Investigaciones Agropecuarias. Centro de Investigación de Recursos Naturales. Instituto de Recursos Biológicos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Sühring, Silvia Susana. Universidad Nacional de Salta. Facultad de Cs.naturales. Escuela de Agronomia. Laboratorio de Investigaciones Botanicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Rojas Aréchiga, Mariana. Universidad Nacional Autónoma de México; MéxicoFil: Daws, M. I.. Royal Botanic Gardens; Reino UnidoFil: Pritchard, H. W.. Royal Botanic Gardens; Reino UnidoInternational Seed Testing Association2011-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/14439Ortega Baes, Francisco Pablo; Galindez, Guadalupe; Sühring, Silvia Susana; Rojas Aréchiga, Mariana; Daws, M. I.; et al.; Seed germination of Echinopsis schickendantzii (Cactaceae): the effects of constant and alternating temperatures; International Seed Testing Association; Seed Science And Technology; 39; 1; 4-2011; 219-2240251-09521819-5717enginfo:eu-repo/semantics/altIdentifier/doi/10.15258/sst.2011.39.1.21info:eu-repo/semantics/altIdentifier/url/http://www.ingentaconnect.com/content/ista/sst/2011/00000039/00000001/art00021info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:46:25Zoai:ri.conicet.gov.ar:11336/14439instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982024-05-08 13:46:26.038CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Seed germination of Echinopsis schickendantzii (Cactaceae): the effects of constant and alternating temperatures
title Seed germination of Echinopsis schickendantzii (Cactaceae): the effects of constant and alternating temperatures
spellingShingle Seed germination of Echinopsis schickendantzii (Cactaceae): the effects of constant and alternating temperatures
Ortega Baes, Francisco Pablo
Cactaceae
Seed Germination
Temperature Effects
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
title_short Seed germination of Echinopsis schickendantzii (Cactaceae): the effects of constant and alternating temperatures
title_full Seed germination of Echinopsis schickendantzii (Cactaceae): the effects of constant and alternating temperatures
title_fullStr Seed germination of Echinopsis schickendantzii (Cactaceae): the effects of constant and alternating temperatures
title_full_unstemmed Seed germination of Echinopsis schickendantzii (Cactaceae): the effects of constant and alternating temperatures
title_sort Seed germination of Echinopsis schickendantzii (Cactaceae): the effects of constant and alternating temperatures
dc.creator.none.fl_str_mv Ortega Baes, Francisco Pablo
Galindez, Guadalupe
Sühring, Silvia Susana
Rojas Aréchiga, Mariana
Daws, M. I.
Pritchard, H. W.
author Ortega Baes, Francisco Pablo
author_facet Ortega Baes, Francisco Pablo
Galindez, Guadalupe
Sühring, Silvia Susana
Rojas Aréchiga, Mariana
Daws, M. I.
Pritchard, H. W.
author_role author
author2 Galindez, Guadalupe
Sühring, Silvia Susana
Rojas Aréchiga, Mariana
Daws, M. I.
Pritchard, H. W.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Cactaceae
Seed Germination
Temperature Effects
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
topic Cactaceae
Seed Germination
Temperature Effects
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
description The effects of constant and alternating temperatures on seed germination in the Cactaceae have been reported to vary, probably as a result of the different temperature regimes used and the species considered. We determined the cardinal temperatures for, and evaluated the effects of a wide range of constant and alternating temperatures on, seed germination of the South American cactus, Echinopsis schickendantzii Web. The base, optimum and maximum temperatures were 7°C, 26.8°C and 49°C, respectively. The proportion of seeds that germinated and the germination rates were not only significantly different at constant and alternating temperatures but also among all temperature regimes considered. The highest proportion of seeds to germinate occurred at 15°, 20°, 30° and 30/15°C whereas the highest germination rates occurred at 25°, 30°, 30/20°, 35/20° and 40/25°C, with no significant differences between the highest values at constant and alternating temperatures. In the suboptimal temperature range for germination rate, the thermal time to 50% germination was 98°C-days. The results indicate that the seeds have no obligate requirement for alternating temperature for germination.
publishDate 2011
dc.date.none.fl_str_mv 2011-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/14439
Ortega Baes, Francisco Pablo; Galindez, Guadalupe; Sühring, Silvia Susana; Rojas Aréchiga, Mariana; Daws, M. I.; et al.; Seed germination of Echinopsis schickendantzii (Cactaceae): the effects of constant and alternating temperatures; International Seed Testing Association; Seed Science And Technology; 39; 1; 4-2011; 219-224
0251-0952
1819-5717
url http://hdl.handle.net/11336/14439
identifier_str_mv Ortega Baes, Francisco Pablo; Galindez, Guadalupe; Sühring, Silvia Susana; Rojas Aréchiga, Mariana; Daws, M. I.; et al.; Seed germination of Echinopsis schickendantzii (Cactaceae): the effects of constant and alternating temperatures; International Seed Testing Association; Seed Science And Technology; 39; 1; 4-2011; 219-224
0251-0952
1819-5717
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.15258/sst.2011.39.1.21
info:eu-repo/semantics/altIdentifier/url/http://www.ingentaconnect.com/content/ista/sst/2011/00000039/00000001/art00021
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv International Seed Testing Association
publisher.none.fl_str_mv International Seed Testing Association
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 15.812429

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