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- W2026417246 abstract "Studies on sympatric species that belong to the same taxonomic group and have the same pattern of pollination and seed dispersion, but different patterns of geographical distribution and structural parameters may be worthwhile to understand the evolution of their compatibility system. We studied the floral biology, pollinators and reproductive systems of two tree species in Itatiaia, an area covered with montane rain forest. Pseudopiptadenia contorta is widespread in Brazil but is present at a low relative density at the study site, while Pseudopiptadenia leptostachya is restrictively distributed but presents one of its highest relative density values in Itatiaia. Both species have small flowers arranged in compact spicate raceme inflorescences that constitute the pollination unit. Pollinators are native stingless bees and European honeybees that collect pollen from their nectarless flowers. Although both species have similar floral characteristics and pollination system, their compatibility system differs. Fruit set after manual pollinations and observation of the pollen tube growth showed that P. leptostachya is self-compatible while P. contorta only set fruits after cross-pollinations, and is thus a self-incompatible species. However, fruit set did not differ between the species, indicating that structural parameters are not affected by the compatibility system. Thus, the difference between these two species in terms of reproductive system may be related to other factors such as patterns of geographical distribution." @default.
- W2026417246 created "2016-06-24" @default.
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- W2026417246 date "2008-08-01" @default.
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- W2026417246 title "Reproductive biology of two tree species of Leguminosae in a Montane Rain Forest in southeastern Brazil" @default.
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- W2026417246 doi "https://doi.org/10.1016/j.flora.2007.10.002" @default.
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