Differences in seed dormancy associated with the domestication of <i>Cucurbita maxima</i> : Elucidation of some mechanisms behind this response
- Autores
- Martínez, Analía Beatriz Luján; Lema, Verónica Soledad; Capparelli, Aylén; López Anido, Fernando; Benech Arnold, Roberto; Bartoli, Carlos Guillermo
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- This work presents the results of physiological studies developed to understand modifications linked to the reduction of seed dormancy provoked by domestication processes. The experiments performed compared wild and domesticated Cucurbita subspecies and their hybrids developed by reciprocal crossings. Seeds of two accessions of the wild subspecies presented dormancy, but it was largely reduced in seeds from the domesticated genotype, and partially reverted in hybrids, especially in those obtained when the domesticated genotype was used as the mother plant. In addition, naked embryos of all subspecies did not display dormancy when incubation was performed at 28°C, but embryo germination was progressively reduced only in the wild genotype under decreasing incubation temperatures (22 and 16°C). In the embryos, abscisic acid (ABA) concentrations were similar in both domesticated and wild subspecies, whereas in the seed coat, it was threefold higher in the wild subspecies. The naked embryos from the wild subspecies were far more responsive to ABA than those from the domesticated subspecies. These results indicate that dormancy in the wild subspecies is imposed by the seed coat tissues and that this effect is mediated by their high ABA content and the sensitivity of the embryos to ABA. These physiological aspects were apparently removed by domestication along with the temperature-dependent response for germination.
Instituto de Fisiología Vegetal
Laboratorio de Etnobotánica y Botánica Aplicada
Facultad de Ciencias Naturales y Museo - Materia
-
Ciencias Naturales
Seed
Abscisic acid
Cucurbita maxima
Domestication
Dormancy
Embryo - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/103435
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Differences in seed dormancy associated with the domestication of <i>Cucurbita maxima</i> : Elucidation of some mechanisms behind this responseMartínez, Analía Beatriz LujánLema, Verónica SoledadCapparelli, AylénLópez Anido, FernandoBenech Arnold, RobertoBartoli, Carlos GuillermoCiencias NaturalesSeedAbscisic acidCucurbita maximaDomesticationDormancyEmbryoThis work presents the results of physiological studies developed to understand modifications linked to the reduction of seed dormancy provoked by domestication processes. The experiments performed compared wild and domesticated <i>Cucurbita</i> subspecies and their hybrids developed by reciprocal crossings. Seeds of two accessions of the wild subspecies presented dormancy, but it was largely reduced in seeds from the domesticated genotype, and partially reverted in hybrids, especially in those obtained when the domesticated genotype was used as the mother plant. In addition, naked embryos of all subspecies did not display dormancy when incubation was performed at 28°C, but embryo germination was progressively reduced only in the wild genotype under decreasing incubation temperatures (22 and 16°C). In the embryos, abscisic acid (ABA) concentrations were similar in both domesticated and wild subspecies, whereas in the seed coat, it was threefold higher in the wild subspecies. The naked embryos from the wild subspecies were far more responsive to ABA than those from the domesticated subspecies. These results indicate that dormancy in the wild subspecies is imposed by the seed coat tissues and that this effect is mediated by their high ABA content and the sensitivity of the embryos to ABA. These physiological aspects were apparently removed by domestication along with the temperature-dependent response for germination.Instituto de Fisiología VegetalLaboratorio de Etnobotánica y Botánica AplicadaFacultad de Ciencias Naturales y Museo2018-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1-7http://sedici.unlp.edu.ar/handle/10915/103435enginfo:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/seed-science-research/article/differences-in-seed-dormancy-associated-with-the-domestication-of-cucurbita-maxima-elucidation-of-some-mechanisms-behind-this-response/5D23F34734E57B74B087950CA0B891B2info:eu-repo/semantics/altIdentifier/issn/1475-2735info:eu-repo/semantics/altIdentifier/doi/10.1017/S0960258517000320info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:22:28Zoai:sedici.unlp.edu.ar:10915/103435Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:22:28.454SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Differences in seed dormancy associated with the domestication of <i>Cucurbita maxima</i> : Elucidation of some mechanisms behind this response |
title |
Differences in seed dormancy associated with the domestication of <i>Cucurbita maxima</i> : Elucidation of some mechanisms behind this response |
spellingShingle |
Differences in seed dormancy associated with the domestication of <i>Cucurbita maxima</i> : Elucidation of some mechanisms behind this response Martínez, Analía Beatriz Luján Ciencias Naturales Seed Abscisic acid Cucurbita maxima Domestication Dormancy Embryo |
title_short |
Differences in seed dormancy associated with the domestication of <i>Cucurbita maxima</i> : Elucidation of some mechanisms behind this response |
title_full |
Differences in seed dormancy associated with the domestication of <i>Cucurbita maxima</i> : Elucidation of some mechanisms behind this response |
title_fullStr |
Differences in seed dormancy associated with the domestication of <i>Cucurbita maxima</i> : Elucidation of some mechanisms behind this response |
title_full_unstemmed |
Differences in seed dormancy associated with the domestication of <i>Cucurbita maxima</i> : Elucidation of some mechanisms behind this response |
title_sort |
Differences in seed dormancy associated with the domestication of <i>Cucurbita maxima</i> : Elucidation of some mechanisms behind this response |
dc.creator.none.fl_str_mv |
Martínez, Analía Beatriz Luján Lema, Verónica Soledad Capparelli, Aylén López Anido, Fernando Benech Arnold, Roberto Bartoli, Carlos Guillermo |
author |
Martínez, Analía Beatriz Luján |
author_facet |
Martínez, Analía Beatriz Luján Lema, Verónica Soledad Capparelli, Aylén López Anido, Fernando Benech Arnold, Roberto Bartoli, Carlos Guillermo |
author_role |
author |
author2 |
Lema, Verónica Soledad Capparelli, Aylén López Anido, Fernando Benech Arnold, Roberto Bartoli, Carlos Guillermo |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Ciencias Naturales Seed Abscisic acid Cucurbita maxima Domestication Dormancy Embryo |
topic |
Ciencias Naturales Seed Abscisic acid Cucurbita maxima Domestication Dormancy Embryo |
dc.description.none.fl_txt_mv |
This work presents the results of physiological studies developed to understand modifications linked to the reduction of seed dormancy provoked by domestication processes. The experiments performed compared wild and domesticated <i>Cucurbita</i> subspecies and their hybrids developed by reciprocal crossings. Seeds of two accessions of the wild subspecies presented dormancy, but it was largely reduced in seeds from the domesticated genotype, and partially reverted in hybrids, especially in those obtained when the domesticated genotype was used as the mother plant. In addition, naked embryos of all subspecies did not display dormancy when incubation was performed at 28°C, but embryo germination was progressively reduced only in the wild genotype under decreasing incubation temperatures (22 and 16°C). In the embryos, abscisic acid (ABA) concentrations were similar in both domesticated and wild subspecies, whereas in the seed coat, it was threefold higher in the wild subspecies. The naked embryos from the wild subspecies were far more responsive to ABA than those from the domesticated subspecies. These results indicate that dormancy in the wild subspecies is imposed by the seed coat tissues and that this effect is mediated by their high ABA content and the sensitivity of the embryos to ABA. These physiological aspects were apparently removed by domestication along with the temperature-dependent response for germination. Instituto de Fisiología Vegetal Laboratorio de Etnobotánica y Botánica Aplicada Facultad de Ciencias Naturales y Museo |
description |
This work presents the results of physiological studies developed to understand modifications linked to the reduction of seed dormancy provoked by domestication processes. The experiments performed compared wild and domesticated <i>Cucurbita</i> subspecies and their hybrids developed by reciprocal crossings. Seeds of two accessions of the wild subspecies presented dormancy, but it was largely reduced in seeds from the domesticated genotype, and partially reverted in hybrids, especially in those obtained when the domesticated genotype was used as the mother plant. In addition, naked embryos of all subspecies did not display dormancy when incubation was performed at 28°C, but embryo germination was progressively reduced only in the wild genotype under decreasing incubation temperatures (22 and 16°C). In the embryos, abscisic acid (ABA) concentrations were similar in both domesticated and wild subspecies, whereas in the seed coat, it was threefold higher in the wild subspecies. The naked embryos from the wild subspecies were far more responsive to ABA than those from the domesticated subspecies. These results indicate that dormancy in the wild subspecies is imposed by the seed coat tissues and that this effect is mediated by their high ABA content and the sensitivity of the embryos to ABA. These physiological aspects were apparently removed by domestication along with the temperature-dependent response for germination. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-03 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo 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://sedici.unlp.edu.ar/handle/10915/103435 |
url |
http://sedici.unlp.edu.ar/handle/10915/103435 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/seed-science-research/article/differences-in-seed-dormancy-associated-with-the-domestication-of-cucurbita-maxima-elucidation-of-some-mechanisms-behind-this-response/5D23F34734E57B74B087950CA0B891B2 info:eu-repo/semantics/altIdentifier/issn/1475-2735 info:eu-repo/semantics/altIdentifier/doi/10.1017/S0960258517000320 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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