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	Provedor de dados Acta Botanica (1) Autor Guimarães,and Elza (1) Machado,Silvia Rodrigues (1) Souza,Camila Vaz de (1) Palavra-chave Bignoniaceae (1) Floral nectary (1) Functional anatomy (1) Histochemistry (1) Ultrastructure (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2017 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última A reduced, yet functional, nectary disk integrates a complex system of floral nectar secretion in the genus Zeyheria (Bignoniaceae) Acta Botanica Machado,Silvia Rodrigues; Souza,Camila Vaz de; Guimarães,and Elza. ABSTRACT The genus Zeyheria (Bignoniaceae) comprises only two species, both of which have been described as possessing a reduced and non-functional nectary disk. Despite the importance of this evolutionary change in the floral nectary, these functional assumptions have been based on disk size and on the distribution, abundance and histochemistry of corolla-borne trichomes. By combining methods on light and electron microscopy, here we investigated the functionality of the reduced nectary disk and describe all of the tissues and structures of the nectar chamber in order to determine the sites of floral nectar secretion in both Zeyheria species. . Our data find the floral nectary traits of both species to be very similar, although differing in their cellular... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bignoniaceae; Floral nectary; Functional anatomy; Histochemistry; Ultrastructure. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300344 Registros recuperados: 1 Primeira ... 1 ... Última

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