2001
DOI: 10.1590/s0102-33062001000200003 View full text |Buy / Rent full text
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Abstract: O estudo foi realizado em áreas de cerrado do Clube Caça e Pesca Itororó em Uberlândia-MG, durante os meses de setembro de 1997 a novembro de 1998. Para confirmação da suspeita da ocorrência de dimorfismo sexual foram adotados vários procedimentos: análise morfológica da flor de indivíduos supostamente dimórficos, análise de viabilidade polínica, medidas de altura dos indivíduos e do comprimento das inflorescências e determinação do sistema reprodutivo com realização de experimentos de polinização. Os resultad… Show more

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“…(Ebenaceae), em um cerradão do Distrito Federal (Fernandes-Bulhão 2002). Esse é um fenômeno comum em espécies lenhosas dióicas tropicais (Bawa 1980b, Bullock & Bawa 1981, Piratelli et al 1998, Fuzeto et al 2001. Plantas masculinas florescendo precocemente atraem mais polinizadores (Aronne & Wilcock 1995), promovendo fluxo direcional de pólen dos indivíduos masculinos para os femininos (Richards 1986) e aumentando o sucesso reprodutivo da população (Piratelli et al 1998, Armstrong & Irvine 1989a.…”
Section: Discussionunclassified
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“…(Ebenaceae), em um cerradão do Distrito Federal (Fernandes-Bulhão 2002). Esse é um fenômeno comum em espécies lenhosas dióicas tropicais (Bawa 1980b, Bullock & Bawa 1981, Piratelli et al 1998, Fuzeto et al 2001. Plantas masculinas florescendo precocemente atraem mais polinizadores (Aronne & Wilcock 1995), promovendo fluxo direcional de pólen dos indivíduos masculinos para os femininos (Richards 1986) e aumentando o sucesso reprodutivo da população (Piratelli et al 1998, Armstrong & Irvine 1989a.…”
Section: Discussionunclassified
“…The plants are characterized by the presence of individuals of separate sexes in the population of a species. Dioecy, as well as other types of reproduction in plants that exhibit sexual dimorphism, has been interpreted as a mechanism to increase genetic variability and reduce endogamic depression in the population (Rolim et al, 2016;Fuzato et al, 2001). The voucher specimen of the adult (wild) and cultivated plant material were identified and deposited at Prisco Bezerra Herbarium (Federal University of Ceará) with the numbers 14.199 and 14.810, respectively.…”
Section: Plant Materialsmentioning
“…Accordingly, this high rate of inbreeding leads to an inbreeding depression, which results in a reduced genetic variability, increasing the probability of embryo malformation, so there is a lower probability of persistence (Fuzeto et al, 2001;Nogueira and Arruda, 2006). Or it may simply be a natural process, and the plant should produce this large amount of flowers as a strategy to some fruit persistence.…”
Section: Discussionmentioning