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Revista chilena de historia natural

versión impresa ISSN 0716-078X

Resumen

ROVERE, ADRIANA E; SMITH-RAMIREZ, CECILIA; ARMESTO, JUAN J  y  PREMOLI, ANDREA C. Breeding system of Embothrium coccineum (Proteaceae) in two populations on different slopes of the Andes. Rev. chil. hist. nat. [online]. 2006, vol.79, n.2, pp.225-232. ISSN 0716-078X.  http://dx.doi.org/10.4067/S0716-078X2006000200008.

Plant breeding systems are considered to reflect species' life history characteristics, selection due to biotic or abiotic factors, pollination conditions, or a combination of these. Reproductive systems may vary over ecological gradients. The breeding system of the ornithophilous Embothrium coccineum (Proteaceae) from temperate South America was studied by pollination treatments: manual self-pollination, manual cross-pollination, automatic self-pollination, and natural pollination. These treatments were conducted in a coastal western and an Andean eastern population. Embothrium coccineum was found to be self-incompatible and highly dependent on the pollinating agent at both sites. However, pollen limitations were greater in the coastal population, as breeding efficiency was lower. Populations have different floral visitors whose identity differentially affects reproductive efficiency and pollen flow in E. coccineum

Palabras clave : self-incompatibility; endemic species; temperate forest.

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