Germinative variability of seeds from different populations of four species of native grasses from Patagonia: a case study in northwestern Chubut.

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Germinative variability of seeds from different populations of four species of native grasses from Patagonia: a case study in northwestern Chubut. In this study, we analyzed the quality and germination behavior of seeds from different populations located on a west-east annual precipitation gradient...

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Autores principales: Nagahama, Nicolás, García Martínez, Guillermo C., Buduba, Carlos G., Opazo, Walter, Caruso, Cecilia A., Ciari, Georgina
Formato: Artículo revista
Lenguaje:Español
Publicado: Sociedad Argentina de Botánica 2016
Materias:
Bromus setifolius
Ecotipos
Festuca pallescens
Germinación
Hordeum comosum
Poa ligularis.
Ecotypes
Germination
Acceso en línea:https://revistas.unc.edu.ar/index.php/BSAB/article/view/14417
Aporte de:
Revistas de la UNC de Universidad Nacional de Córdoba
id I10-R10-article-14417
record_format ojs
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-10
container_title_str Revistas de la UNC
language Español
format Artículo revista
topic Bromus setifolius
Ecotipos
Festuca pallescens
Germinación
Hordeum comosum
Poa ligularis.
Bromus setifolius
Ecotypes
Festuca pallescens
Germination
Hordeum comosum
Poa ligularis.
spellingShingle Bromus setifolius
Ecotipos
Festuca pallescens
Germinación
Hordeum comosum
Poa ligularis.
Bromus setifolius
Ecotypes
Festuca pallescens
Germination
Hordeum comosum
Poa ligularis.
Nagahama, Nicolás
García Martínez, Guillermo C.
Buduba, Carlos G.
Opazo, Walter
Caruso, Cecilia A.
Ciari, Georgina
Germinative variability of seeds from different populations of four species of native grasses from Patagonia: a case study in northwestern Chubut.
topic_facet Bromus setifolius
Ecotipos
Festuca pallescens
Germinación
Hordeum comosum
Poa ligularis.
Bromus setifolius
Ecotypes
Festuca pallescens
Germination
Hordeum comosum
Poa ligularis.
author Nagahama, Nicolás
García Martínez, Guillermo C.
Buduba, Carlos G.
Opazo, Walter
Caruso, Cecilia A.
Ciari, Georgina
author_facet Nagahama, Nicolás
García Martínez, Guillermo C.
Buduba, Carlos G.
Opazo, Walter
Caruso, Cecilia A.
Ciari, Georgina
author_sort Nagahama, Nicolás
title Germinative variability of seeds from different populations of four species of native grasses from Patagonia: a case study in northwestern Chubut.
title_short Germinative variability of seeds from different populations of four species of native grasses from Patagonia: a case study in northwestern Chubut.
title_full Germinative variability of seeds from different populations of four species of native grasses from Patagonia: a case study in northwestern Chubut.
title_fullStr Germinative variability of seeds from different populations of four species of native grasses from Patagonia: a case study in northwestern Chubut.
title_full_unstemmed Germinative variability of seeds from different populations of four species of native grasses from Patagonia: a case study in northwestern Chubut.
title_sort germinative variability of seeds from different populations of four species of native grasses from patagonia: a case study in northwestern chubut.
description Germinative variability of seeds from different populations of four species of native grasses from Patagonia: a case study in northwestern Chubut. In this study, we analyzed the quality and germination behavior of seeds from different populations located on a west-east annual precipitation gradient (500 to 150 mm) in four species of native Patagonian forage grasses (Bromus setifolius, Festuca pallescens, Hordeum comosum and Poa ligularis), from NW Chubut. We observed differences in weight and percentage of filled seeds at inter- and intra-specific level. The seeds were sown in a common environment and the germination percentage and emergence speed were calculated for species and populations. We present data related to the germination of seeds (harvested in 2015) of these four species and we discuss primarily the results obtained from P. ligularis, the species that presented the highest inter-populational variability. In P. ligularis, a large percentage of seeds from the population of the driest site germinated/emerged in fewer days. This characteristic could be associated with these plants adapting physiologically to germinate, emerge and establish themselves quickly in response to the limited availability of water in this area. The genotypes of this particular population could be used for restoration programs in arid environments with annual rainfall less than 150 mm. Finally, due to the variability observed at least in P. ligularis, it is suggested for future breeding programs with these native species it would be necessary to analyze a greater number of populations to select potential seed banks.
publisher Sociedad Argentina de Botánica
publishDate 2016
url https://revistas.unc.edu.ar/index.php/BSAB/article/view/14417
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first_indexed 2022-08-20T01:20:34Z
last_indexed 2022-08-20T01:20:34Z
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spelling I10-R10-article-144172020-03-09T17:59:00Z Germinative variability of seeds from different populations of four species of native grasses from Patagonia: a case study in northwestern Chubut. Variabilidad germinativa en semillas de diferentes poblaciones de cuatro especies de gramíneas nativas de Patagonia: Un estudio de caso en el noroeste de Chubut. Nagahama, Nicolás García Martínez, Guillermo C. Buduba, Carlos G. Opazo, Walter Caruso, Cecilia A. Ciari, Georgina Bromus setifolius Ecotipos Festuca pallescens Germinación Hordeum comosum Poa ligularis. Bromus setifolius Ecotypes Festuca pallescens Germination Hordeum comosum Poa ligularis. Germinative variability of seeds from different populations of four species of native grasses from Patagonia: a case study in northwestern Chubut. In this study, we analyzed the quality and germination behavior of seeds from different populations located on a west-east annual precipitation gradient (500 to 150 mm) in four species of native Patagonian forage grasses (Bromus setifolius, Festuca pallescens, Hordeum comosum and Poa ligularis), from NW Chubut. We observed differences in weight and percentage of filled seeds at inter- and intra-specific level. The seeds were sown in a common environment and the germination percentage and emergence speed were calculated for species and populations. We present data related to the germination of seeds (harvested in 2015) of these four species and we discuss primarily the results obtained from P. ligularis, the species that presented the highest inter-populational variability. In P. ligularis, a large percentage of seeds from the population of the driest site germinated/emerged in fewer days. This characteristic could be associated with these plants adapting physiologically to germinate, emerge and establish themselves quickly in response to the limited availability of water in this area. The genotypes of this particular population could be used for restoration programs in arid environments with annual rainfall less than 150 mm. Finally, due to the variability observed at least in P. ligularis, it is suggested for future breeding programs with these native species it would be necessary to analyze a greater number of populations to select potential seed banks. En este estudio se analizó la calidad y el comportamiento germinativo de semillas de diferentes poblaciones localizadas en un gradiente de precipitación anual oeste-este (500 a 150 mm) en cuatro especies de gramíneas forrajeras nativas (Bromus setifolius, Hordeum comosum, Festuca pallescens y Poa ligularis), del NO de Chubut. Se estimó el peso y el porcentaje de semillas llenas a nivel inter- e intra-específico. Las semillas fueron sembradas en un ambiente común y se calculó el porcentaje de germinación y la velocidad de emergencia para las especies y las poblaciones. En este trabajo se presentan datos relacionados a la germinación de semillas recolectadas en un año en particular (2015) de estas cuatro especies y se discuten principalmente los resultados obtenidos para P. ligularis, la especie que presentó mayor variabilidad entre las poblaciones analizadas. En P. ligularis un gran porcentaje de semillas de la población del sitio más árido germinaron/emergieron en menos días. Esta característica podría estar asociada a adaptaciones fisiológicas de las plantas para germinar, emerger y establecerse rápidamente ante la escasa disponibilidad de agua en este sitio. Los genotipos de esta población particular podrían ser utilizados para programas de restauración de ambientes áridos con precipitación media anual menor a 150 mm. Finalmente, debido a la variabilidad observada al menos en P. ligularis, se sugiere que para futuros programas de mejoramiento con estas especies nativas sería necesario analizar un mayor número de poblaciones para seleccionar los potenciales bancos de semilla. Sociedad Argentina de Botánica 2016-04-25 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo original application/pdf https://revistas.unc.edu.ar/index.php/BSAB/article/view/14417 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 51 No. 1 (2016): March; 89-98 Boletín de la Sociedad Argentina de Botánica; Vol. 51 Núm. 1 (2016): Marzo; 89-98 Boletín de la Sociedad Argentina de Botánica; v. 51 n. 1 (2016): Marzo; 89-98 1851-2372 0373-580X 10.31055/1851.2372.v51.n1 spa https://revistas.unc.edu.ar/index.php/BSAB/article/view/14417/14437 Derechos de autor 2016 Boletín de la Sociedad Argentina de Botánica

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