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	Provedor de dados Rev. Bras. Fisiol. Veg. (1) Autor KERBAUY,GILBERTO B. (1) MAJEROWICZ,NIDIA (1) PERES,LÁZARO E. P. (1) Palavra-chave Development (1) Epiphytes (1) In vitro culture (1) Orchids (1) Plant hormones (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2001 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Dry matter partitioning differences between shoots and roots in two contrasting genotypes of orchids and their relationship with endogenous levels of auxins, cytokinins and abscisic acid Rev. Bras. Fisiol. Veg. PERES,LÁZARO E. P.; MAJEROWICZ,NIDIA; KERBAUY,GILBERTO B.. Epiphytic orchids have been considered an interesting model for plant development and may have unusual features related to the hormonal control of shoot and root growth. In the present experiment we have studied two genotypes of Catasetum fimbriatum Lindl. (Orchidaceae) with an inverse pattern of shoot and root dry matter accumulation. Whereas the CFC1 genotype directs 60% of dry matter towards the shoot system, this same amount is directed towards the root system in the CFC4 genotype. Differences in the endogenous content of cytokinins, IAA and ABA, as well as differences in IAA conjugation and oxidation in shoots and roots were observed in the two genotypes. These differences were correlated with their dry matter partitioning patterns. Thus, the genotype... Tipo: Info:eu-repo/semantics/article Palavras-chave: Epiphytes; Development; In vitro culture; Orchids; Plant hormones. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312001000200007 Registros recuperados: 1 Primeira ... 1 ... Última

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