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	Provedor de dados BABT (1) Autor Tavechio,Washington Luiz Gomes (1) Thomaz,Sidinei Magela (1) Palavra-chave Egeria najas (1) Growth (1) Light compensation point (1) Photosynthesis (1) Rooted macrophytes (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2003 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Effects of light on the growth and photosynthesis of Egeria najas planchon BABT Tavechio,Washington Luiz Gomes; Thomaz,Sidinei Magela. Photosynthesis and growth of Egeria najas (Hydrocharitaceae) from a subtropical reservoir (Itaipu Reservoir, Brazil-Paraguay) were measured in response to low light intensities (0-124 µM m-2 s-1 PAR) in the laboratory. Photosynthesis approached saturation in the range of light intensities used and light compensation point was reached at ca. 6-22 µM m-2 s-1 PAR, indicating that this species had a low light requirement for growth. Light stimulated shoot and root relative growth rates (RGR) but it was not related to ratios between root:shoot RGR. Laboratory observations indicated that (i) both shoot and root growth were simultaneously stimulated by light and (ii) the low light requirements of E. najas may explain its incidence in the Itaipu Reservoir, where... Tipo: Info:eu-repo/semantics/article Palavras-chave: Egeria najas; Photosynthesis; Growth; Light compensation point; Rooted macrophytes. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000200011 Registros recuperados: 1 Primeira ... 1 ... Última

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