Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/101921
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Variation in sexual expression in the monoecious shrub Buxus balearica at different scales |
Autor: | Lázaro, Amparo CSIC ORCID; Méndez, Marcos | Palabras clave: | Stress Spatio-temporal variation Reproductive costs Plant size Phenotypic gender Balearic Islands Iberian Peninsula Monoecy |
Fecha de publicación: | 2007 | Editor: | Wiley-Blackwell | Citación: | Plant Biology 9(6): 736-744 (2007) | Resumen: | Monoecy allows high plasticity in gender expression because the production of separate female and male flowers increases the ability to respond to specific environmental circumstances. We studied variation in sexual expression and its correlates in the monoecious shrub Buxus balearica, for two years, in six populations in the Balearic Islands and four in the Iberian Peninsula. Phenotypic gender varied among populations; while island populations showed slight variations around an average gender, mainland populations showed a broad range of variation in gender among individuals, always biased towards increasing maleness compared with the other populations. Within populations, gender was not related to plant size. Between-year changes were slight and mainly consisted of an increase in relative maleness in the mast year. Reproduction did not affect gender in the next year, as assessed by either observational or experimental methods. Most variation in gender expression occurred among individuals within populations (83.6%), followed by variation among populations (13.6%) and years (2.8%). Our results suggest that male-biased gender at population and plant levels was related to stressful conditions and resource limitation, because: (1) maleness was higher in mainland populations, where summer drought was stronger; (2) maleness increased with elevation; (3) fruit set was positively correlated with femaleness; (4) the percentage of male inflorescences increased over the flowering period; and (5) male inflorescences were preferentially in lower parts of the branch nodes. Higher maleness in mast years, however, could be related to increased male success under synchronic flowering. © Georg Thieme Verlag KG Stuttgart. | URI: | http://hdl.handle.net/10261/101921 | DOI: | 10.1055/s-2007-965249 | Identificadores: | doi: 10.1055/s-2007-965249 issn: 1435-8603 |
Aparece en las colecciones: | (IMEDEA) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
6
checked on 16-abr-2024
WEB OF SCIENCETM
Citations
5
checked on 19-feb-2024
Page view(s)
239
checked on 19-abr-2024
Download(s)
114
checked on 19-abr-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.