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	Provedor de dados Acta Botanica (1) BABT (1) Autor Barbosa,Newton Pimentel de Ulhôa (1) Fernandes,G. Wilson (1) Fernandes,Geraldo Wilson (1) Oliva,Marco Antonio (1) Sanchez-Azofeifa,Arturo (1) Silva,Celice Alexandre (1) Vieira,Milene Faria (1) Mais... Palavra-chave Coccoloba cereifera (2) Agamospermy (1) Breeding systems (1) Espinhaço Mountains (1) Maximum entropy (1) Rupestrian grasslands (1) Serra do Cipó (1) Sex determination (1) Sexual morphs (1) Trioecy (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2015 (1) 2008 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última A relict species restricted to a quartzitic mountain in tropical America: an example of microrefugium? Acta Botanica Barbosa,Newton Pimentel de Ulhôa; Fernandes,G. Wilson; Sanchez-Azofeifa,Arturo. ABSTRACTWe examined the distribution of Coccoloba cereifera,a tropical endemic species that occurs in a small area in the Espinhaço mountain range, southeastern Brazil. It is hypothesized that its narrow distribution is strongly related to the spatially scattered distribution of sandfields. However, this soil type extends far beyond the small region where C. cereifera is currently found, indicating that other factors might be involved in the distribution of this species. Coccoloba cereifera also displays all traits of a relict population in a microrefugium. As a result, we were encouraged to explore other factors potentially related to the distribution of the species. In an attempt to aid in the understanding of the processes and mechanisms that lead C.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Coccoloba cereifera; Espinhaço Mountains; Maximum entropy; Rupestrian grasslands; Serra do Cipó. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000300299 Trioecy in Coccoloba cereifera Schwacke (Polygonaceae), a narrow endemic and threatened tropical species BABT Silva,Celice Alexandre; Oliva,Marco Antonio; Vieira,Milene Faria; Fernandes,Geraldo Wilson. Trioecy, the co-occurrence of the males, females, and hermaphrodite morphs in natural populations, is a rare and poorly studied breeding system. It is expressed in Coccoloba cereifera, an endemic, and endangered species from the rupestrian fields of Serra do Cipó, southeastern Brazil. Male individuals produce staminate flowers but no fruits. Female individuals produce pistillate flowers and set fruits. Both staminate and pistillate flowers present non-functional organs of the opposite sex that simulate perfect flowers. Hermaphrodite individuals produce two different perfect flowers, each one belonging to distinct individuals, and set fruits. Perfect flowers differ in the amount of pollen produced, in pollen viability, and in some morphological traits. Two... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agamospermy; Breeding systems; Coccoloba cereifera; Sex determination; Sexual morphs; Trioecy. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000500017 Registros recuperados: 2 Primeira ... 1 ... Última

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