Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Naturalis (1) Autor Baas, P. (1) Gasson, P. (1) Jansen, S. (1) Lens, F. (1) Smets, E. (1) Palavra-chave 42.42 (1) Drought stress (1) Hydraulic system (1) Scalariform perforation plates (1) Simple perforation plates (1) Vestured pits (1) Xylem structure (1) Mais... Tipo do documento Article / Letter to the editor (1) Ano 2004 (1) País Netherlands (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Variation in xylem structure from tropics to tundra: Evidence from vestured pits Naturalis Jansen, S.; Baas, P.; Gasson, P.; Lens, F.; Smets, E.. Bordered pits play an important role in permitting water flow among adjacent tracheary elements in flowering plants. Variation in the bordered pit structure is suggested to be adaptive in optimally balancing the conflict between hydraulic efficiency (conductivity) and safety from air entry at the pit membrane (air seeding). The possible function of vestured pits, which are bordered pits with protuberances from the secondary cell wall of the pit chamber, could be increased hydraulic resistance or minimized vulnerability to air seeding. These functional hypotheses have to be harmonized with the notion that the vestured or nonvestured nature of pits contains strong phylogenetic signals (i.e., often characterize large species-rich clades with broad ecological... Tipo: Article / Letter to the editor Palavras-chave: Xylem structure; Vestured pits; Scalariform perforation plates; Simple perforation plates; Hydraulic system; Drought stress; 42.42. Ano: 2004 URL: http://www.repository.naturalis.nl/record/423503 Registros recuperados: 1 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco