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	Provedor de dados Acta Botanica (1) Autor Randi,Áurea Maria (1) Renner,Gladys Daniela Rogge (1) Palavra-chave Chlorophyll (1) Gametophyte (1) Germination (1) Irradiance (1) Sugar (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2004 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Effects of sucrose and irradiance on germination and early gametophyte growth of the endangered tree fern Dicksonia sellowiana Hook (Dicksoniaceae) Acta Botanica Renner,Gladys Daniela Rogge; Randi,Áurea Maria. It is an endangered tree fern that grows in mixed umbrophylus forests in the tropics. Sterilized spores were germinated at 25 ± 2ºC under a 16-hour photoperiod, in Dyer and MS medium supplemented with 0 to 5% sucrose. The germination was lower with the addition of sucrose. Dry mass was higher in 30-day-old gametophytes cultivated in Dyer medium with the addition of 3 to 5% of sucrose. The dry mass decreased in 30-day-old gametophytes cultivated in Dyer and MS media without sucrose and in MS medium with the addition of 4 or 5% of sucrose. The effect of different irradiance on the germination and early gametophyte development of D. sellowiana was analyzed in the autumn of 1998 (May until July). Conical flasks containing spores were kept over a period of 49... Tipo: Info:eu-repo/semantics/article Palavras-chave: Sugar; Chlorophyll; Gametophyte; Germination; Irradiance. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062004000200017 Registros recuperados: 1 Primeira ... 1 ... Última

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