English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/40325
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Distribution ecology of pollen tubes: fine-grained, labile spatial mosaics in southern Spanish Lamiaceae

AuthorsHerrera, Carlos M.
individual variation
intraspecific variation,
Lavandula latifolia
mean crowding
pollen tube numbers
Issue DateFeb-2004
PublisherJohn Wiley & Sons
CitationNew Phytologist (2004) 161: 473 – 484
Abstract• Patterns of intraspecific variation in the number of pollen tubes per style in naturally pollinated plants are poorly known, yet that information is essential for assessing the frequency of occurrence and evolutionary implications of microgametophyte com- petition in the wild. • This paper analyses intraspecific variation in the number of pollen tubes per style for six species of southern Spanish insect-pollinated Lamiaceae (Ballota hirsuta, Lavandula latifolia, Marrubium supinum, Phlomis lychnitis, Rosmarinus officinalis and Teucrium rotundifolium) differing in growth form, phenology, flower size and pollinators. • Number of pollen tubes exceeded number of fertilizable ovules in 26 – 87% of styles, and mean number per pollen tube of other pollen tubes in the same style varied between five and 12. Within-plant variation in pollen tube number was extensive in all species, accounting for 68–92% of total population-level variance. In L. latifolia mean pollen tube number per style differed between populations and between plants within populations, but such differences were not consistent among years. • It is concluded that opportunities for microgametophyte competition and selec- tion on competitive ability are considerable in all species studied, although extreme spatial fine-graininess and marked stochasticity in the variation of pollen tube numbers, including temporal inconstancy of individual differences, will greatly reduce the opportunity for selection on sporophytic characters influencing degree of microgametophyte competition.
Publisher version (URL)http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2004.00978.x/pdf
Appears in Collections:(EBD) Artículos
Files in This Item:
File Description SizeFormat 
herrera.2004.new.phytol.doc4,95 MBMicrosoft WordView/Open
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.