Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/110685
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Heritability of seed weight in Maritime pine, a relevant trait in the transmission of environmental maternal effects |
Autor: | Zas Arregui, Rafael CSIC ORCID; Sampedro Pérez, Luis CSIC ORCID | Palabras clave: | Size variation Quantitative genetics Selective pressures Nemophila-menziessi Mass variation Trade-off Germination Evolution Number Growth |
Fecha de publicación: | ene-2015 | Editor: | Nature Publishing Group | Citación: | Heredity 114 (1): 116–124 (2015) | Resumen: | Quantitative seed provisioning is an important life-history trait with strong effects on offspring phenotype and fitness. As for any other trait, heritability estimates are vital for understanding its evolutionary dynamics. However, being a trait in between two generations, estimating additive genetic variation of seed provisioning requires complex quantitative genetic approaches for distinguishing between true genetic and environmental maternal effects. Here, using Maritime pine as a long-lived plant model, we quantified additive genetic variation of cone and seed weight (SW) mean and SW within-individual variation. We used a powerful approach combining both half-sib analysis and parent-offspring regression using several common garden tests established in contrasting environments to separate G, E and G x E effects. Both cone weight and SW mean showed significant genetic variation but were also influenced by the maternal environment. Most of the large variation in SW mean was attributable to additive genetic effects (h(2) = 0.55-0.74). SW showed no apparent G x E interaction, particularly when accounting for cone weight covariation, suggesting that the maternal genotypes actively control the SW mean irrespective of the amount of resources allocated to cones. Within-individual variation in SW was low (12%) relative to between-individual variation (88%), and showed no genetic variation but was largely affected by the maternal environment, with greater variation in the less favourable sites for pine growth. In summary, results were very consistent between the parental and the offspring common garden tests, and clearly indicated heritable genetic variation for SW mean but not for within-individual variation in SW. | Versión del editor: | http://dx.doi.org/10.1038/hdy.2014.76 | URI: | http://hdl.handle.net/10261/110685 | DOI: | 10.1038/hdy.2014 | ISSN: | 0018-067X | E-ISSN: | 1365-2540 |
Aparece en las colecciones: | (MBG) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Zas_Heritability_seed...pdf | 205,4 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
Page view(s)
384
checked on 01-may-2024
Download(s)
249
checked on 01-may-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.