Reproductive biology and success of invasive Australian acacias in Portugal

摘要: Reproductive traits are crucial for the establishment and maintenance of populations in new areas, therefore invasion process. This work aimed to study reproductive biology four aggressive invasive Australian Acacia spp. Portugal. Fruit seed set, weight germinability, seedling growth were assessed self- outcross treatments A. dealbata, A. longifolia, A. melanoxylon A. saligna. showed different investments production units natural success, with most species, having highest investment success. melanoxylon a strategy, andromonoecy, contrasting other hermaphroditic species. shown be predominantly self-incompatible, but low level spontaneous selfing enabled viable offspring. dealbata A. longifolia suffered pollen limitation. Self-progeny had lower viability than progeny from outcrossing A. dealbata A. melanoxylon. did not show higher compatibility rates comparison native area. They fruit set but, as result their massive flower production, realized success was high could have contributed invasion. © 2014 The Linnean Society London, Botanical Journal Society, 2014, 174, 574–588.