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vol.79 issue2Revisiting chlorophyll data along the coast in north-central Chile, considering multiscale environmental variabilityPlant community variation across a puna landscape in the Chilean Andes author indexsubject indexarticles search
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Revista chilena de historia natural

Print version ISSN 0716-078X

Abstract

ROVERE, ADRIANA E; SMITH-RAMIREZ, CECILIA; ARMESTO, JUAN J  and  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

Keywords : self-incompatibility; endemic species; temperate forest.

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