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dc.contributor.author
del Bel, Zoé
dc.contributor.author
Andrade, Andrea Mariela
dc.contributor.author
Della Maddalena, Marisa Luján
dc.contributor.author
Vigliocco, Ana Edit
dc.contributor.author
Alemano, Sergio Gabriel
dc.date.available
2024-02-09T13:34:08Z
dc.date.issued
2023-01
dc.identifier.citation
del Bel, Zoé; Andrade, Andrea Mariela; Della Maddalena, Marisa Luján; Vigliocco, Ana Edit; Alemano, Sergio Gabriel; The interplay of specific hormonal profile in fruit parts of sunflower inbred lines with contrasting dormancy levels during germination and dormancy breaking by exogenous application of plant growth regulators; Crop Science Society of America; Crop Science; 63; 2; 1-2023; 852-866
dc.identifier.issn
0011-183X
dc.identifier.uri
http://hdl.handle.net/11336/226571
dc.description.abstract
Sunflower (Helianthus annuus L.) seed dormancy at harvest is an undesirable characteristic regarding productive systems. From a commercial point of view, the dormancy generates production and marketing problem with a negative impact on crop yields. To overcome this problem, we studied different treatments, including the application of growth regulators. In addition, as the interaction of various hormones in different sunflower fruit parts is not fully understood regarding regulation of dormancy and germination processes, we also (1) characterized the dormancy level of sunflower seeds of Xi3 and X274 inbred lines; (2) assessed the effect of exogenous growth regulators on dormancy release; (3) evaluated the endogenous content of abscisic acid (ABA), gibberellins (GAs), 12-oxo-phytodienoic acid (OPDA), jasmonic acid (JA), salicylic acid (SA), auxins, and cytokinins (CKs) in embryonic axis, cotyledons, pericarp, and seed coat-endosperm; and (4) analyzed the kinetics of the accumulation of these phytohormones in Xi3 embryonic axis during early imbibition (3 to 12 h) of cypselas treated, or not, with growth regulators effective in the dormancy release. We were able to classify the two sunflower lines studied according to dormancy level: The Xi3 line was dormant and X274 line was non-dormant at harvest. The results showed that the dormancy of Xi3 seeds is associated with a high level of ABA, OPDA, and JA, while germination of X274 dry seeds at harvest time is related to high levels of GA1. Exogenous treatment with GA3 and Ethephon overcame Xi3 seed dormancy through the changes in endogenous hormonal profiles of the embryonic axis. The exogenous application of GA3 induced JA, SA, and CKs accumulation and to modify the ABA/GA1 ratio, whereas Ethephon treatments mediated the ABA/GA1 ratio with the consequent Xi3 seed germination. Thus, the interplay of different phytohormones during early imbibition time seems to be the responsible for breaking sunflower seed dormancy.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Crop Science Society of America
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
HORMONAL PROFILE
dc.subject
SUNFLOWER
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GERMINATION
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DORMANCY
dc.subject.classification
Ciencias de las Plantas, Botánica
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
The interplay of specific hormonal profile in fruit parts of sunflower inbred lines with contrasting dormancy levels during germination and dormancy breaking by exogenous application of plant growth regulators
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-02-09T11:11:42Z
dc.journal.volume
63
dc.journal.number
2
dc.journal.pagination
852-866
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: del Bel, Zoé. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Instituto de Investigaciones Agrobiotecnologicas. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Investigaciones Agrobiotecnologicas.; Argentina
dc.description.fil
Fil: Andrade, Andrea Mariela. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Instituto de Investigaciones Agrobiotecnologicas. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Investigaciones Agrobiotecnologicas.; Argentina
dc.description.fil
Fil: Della Maddalena, Marisa Luján. No especifíca;
dc.description.fil
Fil: Vigliocco, Ana Edit. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Instituto de Investigaciones Agrobiotecnologicas. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Investigaciones Agrobiotecnologicas.; Argentina
dc.description.fil
Fil: Alemano, Sergio Gabriel. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Instituto de Investigaciones Agrobiotecnologicas. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Investigaciones Agrobiotecnologicas.; Argentina
dc.journal.title
Crop Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://acsess.onlinelibrary.wiley.com/doi/full/10.1002/csc2.20912
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/csc2.20912
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