Variation of early reproductive allocation in multi-site genetic trials of Maritime pine and Aleppo pine
Life histories in Mediterranean pines are well known to be closely related to different fire and disturbance regimes. Variation in these factors is also reflected in reproductive strategies at the specific and intraspecific level. Specifically, the onset of reproduction is a crucial stage for any organism because it has profound implications on fitness. In this paper we focus on the intraspecific variation and plasticity in the threshold size for reproduction and reproductive allocation in two Mediterranean pines, assessed at the onset of reproduction, when trade-offs between reproduction and growth are expected to be greater. Replicated common garden provenance and progeny trials of Aleppo pine and Maritime pine were used to estimate genetic parameters for reproduction and vegetative growth, as well as variation in plasticity in reproductive strategies at the intraspecific level. In both species, high variation among populations was found for both threshold size for reproduction and for reproductive allocation. Reproductive allocation was also highly variable within populations and showed moderate to high values of heritability and high coefficients of additive genetic variation. These results indicate a high genetic control of these reproductive traits, while high additive genetic variation is maintained, allowing to face selective pressures. Moreover, reproductive strategies although plastic, showed low genotype × environment interaction, and intraspecific variation was highly consistent across trial sites both at the population and the family levels. The former data confirm the strong genetic control of reproductive traits in these species. Finally, the fact that Aleppo pine starts its reproductive phase as female while Maritime pine can start reproducing either as male or female deserves further attention.
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Format: | journal article biblioteca |
Language: | English |
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CSIC - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA)
2010
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Subjects: | Pinus halepensis, Pinus pinaster, Genetic variability, Plasticity, Trade-off, Early reproductive strategies, Threshold size for reproduction, |
Online Access: | http://hdl.handle.net/20.500.12792/4226 http://hdl.handle.net/10261/294582 |
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dig-inia-es-10261-2945822023-02-20T10:40:05Z Variation of early reproductive allocation in multi-site genetic trials of Maritime pine and Aleppo pine Santos Del Blanco, Luis Zas, R. Notivol, E. Chambel, M. R. Majada, J. Climent Maldonado, José María Pinus halepensis Pinus pinaster Genetic variability Plasticity Trade-off Early reproductive strategies Threshold size for reproduction Life histories in Mediterranean pines are well known to be closely related to different fire and disturbance regimes. Variation in these factors is also reflected in reproductive strategies at the specific and intraspecific level. Specifically, the onset of reproduction is a crucial stage for any organism because it has profound implications on fitness. In this paper we focus on the intraspecific variation and plasticity in the threshold size for reproduction and reproductive allocation in two Mediterranean pines, assessed at the onset of reproduction, when trade-offs between reproduction and growth are expected to be greater. Replicated common garden provenance and progeny trials of Aleppo pine and Maritime pine were used to estimate genetic parameters for reproduction and vegetative growth, as well as variation in plasticity in reproductive strategies at the intraspecific level. In both species, high variation among populations was found for both threshold size for reproduction and for reproductive allocation. Reproductive allocation was also highly variable within populations and showed moderate to high values of heritability and high coefficients of additive genetic variation. These results indicate a high genetic control of these reproductive traits, while high additive genetic variation is maintained, allowing to face selective pressures. Moreover, reproductive strategies although plastic, showed low genotype × environment interaction, and intraspecific variation was highly consistent across trial sites both at the population and the family levels. The former data confirm the strong genetic control of reproductive traits in these species. Finally, the fact that Aleppo pine starts its reproductive phase as female while Maritime pine can start reproducing either as male or female deserves further attention. 2023-02-20T10:40:05Z 2023-02-20T10:40:05Z 2010 journal article Forest Systems 19(3): 381-392 (2010) 1131-7965 http://hdl.handle.net/20.500.12792/4226 http://hdl.handle.net/10261/294582 10.5424/fs/2010193-9109 2171-9845 en open CSIC - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA) |
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Pinus halepensis Pinus pinaster Genetic variability Plasticity Trade-off Early reproductive strategies Threshold size for reproduction Pinus halepensis Pinus pinaster Genetic variability Plasticity Trade-off Early reproductive strategies Threshold size for reproduction |
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Pinus halepensis Pinus pinaster Genetic variability Plasticity Trade-off Early reproductive strategies Threshold size for reproduction Pinus halepensis Pinus pinaster Genetic variability Plasticity Trade-off Early reproductive strategies Threshold size for reproduction Santos Del Blanco, Luis Zas, R. Notivol, E. Chambel, M. R. Majada, J. Climent Maldonado, José María Variation of early reproductive allocation in multi-site genetic trials of Maritime pine and Aleppo pine |
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Life histories in Mediterranean pines are well known to be closely related to different fire and disturbance regimes. Variation in these factors is also reflected in reproductive strategies at the specific and intraspecific level. Specifically, the onset of reproduction is a crucial stage for any organism because it has profound implications on fitness. In this paper we focus on the intraspecific variation and plasticity in the threshold size for reproduction and reproductive allocation in two Mediterranean pines, assessed at the onset of reproduction, when trade-offs between reproduction and growth are expected to be greater. Replicated common garden provenance and progeny trials of Aleppo pine and Maritime pine were used to estimate genetic parameters for reproduction and vegetative growth, as well as variation in plasticity in reproductive strategies at the intraspecific level. In both species, high variation among populations was found for both threshold size for reproduction and for reproductive allocation. Reproductive allocation was also highly variable within populations and showed moderate to high values of heritability and high coefficients of additive genetic variation. These results indicate a high genetic control of these reproductive traits, while high additive genetic variation is maintained, allowing to face selective pressures. Moreover, reproductive strategies although plastic, showed low genotype × environment interaction, and intraspecific variation was highly consistent across trial sites both at the population and the family levels. The former data confirm the strong genetic control of reproductive traits in these species. Finally, the fact that Aleppo pine starts its reproductive phase as female while Maritime pine can start reproducing either as male or female deserves further attention. |
format |
journal article |
topic_facet |
Pinus halepensis Pinus pinaster Genetic variability Plasticity Trade-off Early reproductive strategies Threshold size for reproduction |
author |
Santos Del Blanco, Luis Zas, R. Notivol, E. Chambel, M. R. Majada, J. Climent Maldonado, José María |
author_facet |
Santos Del Blanco, Luis Zas, R. Notivol, E. Chambel, M. R. Majada, J. Climent Maldonado, José María |
author_sort |
Santos Del Blanco, Luis |
title |
Variation of early reproductive allocation in multi-site genetic trials of Maritime pine and Aleppo pine |
title_short |
Variation of early reproductive allocation in multi-site genetic trials of Maritime pine and Aleppo pine |
title_full |
Variation of early reproductive allocation in multi-site genetic trials of Maritime pine and Aleppo pine |
title_fullStr |
Variation of early reproductive allocation in multi-site genetic trials of Maritime pine and Aleppo pine |
title_full_unstemmed |
Variation of early reproductive allocation in multi-site genetic trials of Maritime pine and Aleppo pine |
title_sort |
variation of early reproductive allocation in multi-site genetic trials of maritime pine and aleppo pine |
publisher |
CSIC - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA) |
publishDate |
2010 |
url |
http://hdl.handle.net/20.500.12792/4226 http://hdl.handle.net/10261/294582 |
work_keys_str_mv |
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