Contributions to the morphological and physiological knowledge of reproduction by seeds of Zephyranthes tubispatha (Amaryllidaceae)
Background and aims: Zephyranthes tubispatha is a South American species with ornamental and pharmacological potential. It was proposed to complete the knowledge of its reproduction by seeds, regarding 1) attributes of fruits, seeds, seed-seedling transition substages, normal and abnormal seedlings;...
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| Formato: | Artículo revista |
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Sociedad Argentina de Botánica
2023
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| Acceso en línea: | https://revistas.unc.edu.ar/index.php/BSAB/article/view/40185 |
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I10-R325-article-40185 |
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ojs |
| institution |
Universidad Nacional de Córdoba |
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I-10 |
| repository_str |
R-325 |
| container_title_str |
Boletín de la Sociedad Argentina de Botánica |
| language |
Español |
| format |
Artículo revista |
| topic |
Subestadios plántulas almacenamiento semillazón germinación termoinhibición vigor Substages seedlings storage seeding germination thermoinhibition vigor Armazenar Germinação Mudas Sementes Termoinibição Vigor Zephyranthes tubispatha. |
| spellingShingle |
Subestadios plántulas almacenamiento semillazón germinación termoinhibición vigor Substages seedlings storage seeding germination thermoinhibition vigor Armazenar Germinação Mudas Sementes Termoinibição Vigor Zephyranthes tubispatha. Acosta, Maria Cecilia Alcaraz, María Luciana Causin, Fabio Humberto Manfreda, Vilma Teresa Contributions to the morphological and physiological knowledge of reproduction by seeds of Zephyranthes tubispatha (Amaryllidaceae) |
| topic_facet |
Subestadios plántulas almacenamiento semillazón germinación termoinhibición vigor Substages seedlings storage seeding germination thermoinhibition vigor Armazenar Germinação Mudas Sementes Termoinibição Vigor Zephyranthes tubispatha. |
| author |
Acosta, Maria Cecilia Alcaraz, María Luciana Causin, Fabio Humberto Manfreda, Vilma Teresa |
| author_facet |
Acosta, Maria Cecilia Alcaraz, María Luciana Causin, Fabio Humberto Manfreda, Vilma Teresa |
| author_sort |
Acosta, Maria Cecilia |
| title |
Contributions to the morphological and physiological knowledge of reproduction by seeds of Zephyranthes tubispatha (Amaryllidaceae) |
| title_short |
Contributions to the morphological and physiological knowledge of reproduction by seeds of Zephyranthes tubispatha (Amaryllidaceae) |
| title_full |
Contributions to the morphological and physiological knowledge of reproduction by seeds of Zephyranthes tubispatha (Amaryllidaceae) |
| title_fullStr |
Contributions to the morphological and physiological knowledge of reproduction by seeds of Zephyranthes tubispatha (Amaryllidaceae) |
| title_full_unstemmed |
Contributions to the morphological and physiological knowledge of reproduction by seeds of Zephyranthes tubispatha (Amaryllidaceae) |
| title_sort |
contributions to the morphological and physiological knowledge of reproduction by seeds of zephyranthes tubispatha (amaryllidaceae) |
| description |
Background and aims: Zephyranthes tubispatha is a South American species with ornamental and pharmacological potential. It was proposed to complete the knowledge of its reproduction by seeds, regarding 1) attributes of fruits, seeds, seed-seedling transition substages, normal and abnormal seedlings; 2) germination due to the effect of different storage periods, seeding times, and exposure to supra-optimal temperatures; and 3) plant vigor.
M&M: Samples harvested between 2018 and 2022 (Buenos Aires, Argentina) were used. Fruits and seeds were characterized morphometrically and seminal reserves histochemically. Substages during the seed-seedling transition were defined, and normal and abnormal seedlings were morphologically described. The germination of seeds from different storage periods, seeding times, and thermal conditions was evaluated. Changes in seed viability, electrolyte loss, and plant vigor were studied.
Results: The dimensions of fruits and the number of seeds differed from those reported in the literature, and coincided in color and seminal texture. Lipids and proteins were detected as endosperm reserves. Five seed-seedling transition substages were described as normal and abnormal seedlings. Seeds of up to 10 months of storage, different seeding times and thermal conditions presented high germination percentages. High temperatures thermoinhibited germination, but did not affect subsequent plant survival.
Conclusions: Storage for more than one year showed increased seed mortality and seedling anomalies. The seeding moment conditioned the germination response to the heat treatments, and thermoinhibition did not affect the vigor of the plants produced. |
| publisher |
Sociedad Argentina de Botánica |
| publishDate |
2023 |
| url |
https://revistas.unc.edu.ar/index.php/BSAB/article/view/40185 |
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2024-09-03T22:50:27Z |
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I10-R325-article-401852023-11-15T16:43:29Z Contributions to the morphological and physiological knowledge of reproduction by seeds of Zephyranthes tubispatha (Amaryllidaceae) Aportes al conocimiento morfológico y fisiológico de la reproducción por semillas de Zephyranthes tubispatha (Amaryllidaceae) “Contribuições ao conhecimento morfológico e fisiológico da reprodução por sementes de Zephyranthes tubispatha (Amaryllidaceae)” Acosta, Maria Cecilia Alcaraz, María Luciana Causin, Fabio Humberto Manfreda, Vilma Teresa Subestadios plántulas almacenamiento semillazón germinación termoinhibición vigor Substages seedlings storage seeding germination thermoinhibition vigor Armazenar Germinação Mudas Sementes Termoinibição Vigor Zephyranthes tubispatha. Background and aims: Zephyranthes tubispatha is a South American species with ornamental and pharmacological potential. It was proposed to complete the knowledge of its reproduction by seeds, regarding 1) attributes of fruits, seeds, seed-seedling transition substages, normal and abnormal seedlings; 2) germination due to the effect of different storage periods, seeding times, and exposure to supra-optimal temperatures; and 3) plant vigor. M&M: Samples harvested between 2018 and 2022 (Buenos Aires, Argentina) were used. Fruits and seeds were characterized morphometrically and seminal reserves histochemically. Substages during the seed-seedling transition were defined, and normal and abnormal seedlings were morphologically described. The germination of seeds from different storage periods, seeding times, and thermal conditions was evaluated. Changes in seed viability, electrolyte loss, and plant vigor were studied. Results: The dimensions of fruits and the number of seeds differed from those reported in the literature, and coincided in color and seminal texture. Lipids and proteins were detected as endosperm reserves. Five seed-seedling transition substages were described as normal and abnormal seedlings. Seeds of up to 10 months of storage, different seeding times and thermal conditions presented high germination percentages. High temperatures thermoinhibited germination, but did not affect subsequent plant survival. Conclusions: Storage for more than one year showed increased seed mortality and seedling anomalies. The seeding moment conditioned the germination response to the heat treatments, and thermoinhibition did not affect the vigor of the plants produced. Introducción y objetivos: Zephyranthes tubispatha es una especie sudamericana con potencial ornamental y farmacológico. Se planteó completar el conocimiento de su reproducción por semillas, respecto a: 1) atributos de frutos, semillas, subestadios de transición semilla-plántula, plántulas normales y anormales; 2) la germinación por efecto de diferentes periodos de almacenamiento, momentos de semillazón, y exposición a temperaturas supraóptimas; y 3) el vigor de plantas. M&M: Se utilizaron muestras cosechadas entre 2018 y 2022 (Buenos Aires, Argentina). Se caracterizaron morfométricamente frutos y semillas, e histoquímicamente las reservas seminales. Se definieron subestadios durante la transición semilla-plántula, y describieron morfológicamente plántulas normales y anormales. Se evaluó la germinación de semillas prevenientes de diferentes periodos de almacenamientos, momentos de semillazón y condiciones térmicas. Se estudiaron cambios en la viabilidad de semillas, pérdida de electrolitos, y el vigor de plantas. Resultados: Las dimensiones de frutos y número de semillas difirieron a lo reportado bibliográficamente, y coincidieron en color y textura seminal. Se detectaron lípidos y proteínas como reservas del endosperma. Se describieron cinco subestadios de transición semilla-plántula, plántulas normales y anormales. Semillas de hasta 10 meses de almacenamiento, diferentes momentos de semillazón y condiciones térmicas presentaron altos porcentajes de germinación. Las altas temperaturas termoinhibieron la germinación, pero no afectaron la posterior supervivencia de plantas. Conclusiones: El almacenamiento por más de un año evidenció aumento en la mortalidad de semillas y anomalías en plántulas. El momento de semillazón condicionó la respuesta germinativa a los tratamientos térmicos y la termoihibición no afectó el vigor de plantas producidas. Introdução e objetivos: Zephyranthes tubispatha é uma espécie sul-americana com potencial ornamental. Propôs-se completar o conhecimento para sua reprodução por sementes quanto a: 1) atributos dos frutos, sementes, estádios de transição semente-plântula, plântula normal e anormal; 2) efeitos do tempo de armazenamento e origem na germinação, e 3) efeito de diferentes períodos de exposição a temperaturas supraótimas na resposta germinativa.M&M: Foram analisadas amostras colhidas entre 2018 e 2022 na cidade de Azul (Argentina). Frutos e sementes foram caracterizados morfometricamente e as reservas seminais histoquimicamente. As fases de desenvolvimento foram definidas durante a transição semente-muda. A morfologia de mudas normais e alterações associadas à perda de vigor foram descritas. A germinação das sementes foi estudada: a) armazenadas por diferentes períodos em temperatura ambiente, b) em diferentes épocas de produção (semeadura), e c) expostas a diferentes condições térmicas. Foram analisados a perda de eletrólitos e o vigor da planta.Resultados e conclusões: As dimensões dos frutos e número de sementes diferiram dos relatados na literatura, e coincidiram em forma, cor e textura seminal. Lipídios e proteínas foram detectados como reservas de endosperma. Foram descritos cinco estados de transição semente-plântula que permitiram avaliar o desenvolvimento de plântulas normais e caracterizar anomalias associadas à perda de vigor. 100% de germinação foi obtido até 10 meses de armazenamento. Depois diminuiu, aumentando a mortalidade e a presença de anomalias nas mudas. Temperaturas supraótimas termoinibem a germinação, embora não afetem o vigor subseqüente das mudas. Sociedad Argentina de Botánica 2023-08-18 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.unc.edu.ar/index.php/BSAB/article/view/40185 10.31055/1851.2372.v58.n3.40185 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 58 No. 3 (2023): September. Special Issue: Amaryllidaceae Boletín de la Sociedad Argentina de Botánica; Vol. 58 Núm. 3 (2023): Septiembre. Número especial: Amaryllidaceae Boletín de la Sociedad Argentina de Botánica; v. 58 n. 3 (2023): Setembro. Edição especial: Amaryllidaceae 1851-2372 0373-580X 10.31055/1851.2372.v58.n3 spa https://revistas.unc.edu.ar/index.php/BSAB/article/view/40185/42411 https://revistas.unc.edu.ar/index.php/BSAB/article/view/40185/42412 Derechos de autor 2023 Maria Cecilia Acosta, María Luciana Alcaraz, Fabio Humberto Causin, Vilma Teresa Manfreda https://creativecommons.org/licenses/by-nc-nd/4.0 |