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	Provedor de dados Rev. Bras. Bot. (1) Rev. Bras. Ciênc. Solo (1) Autor Carvalho,Maria Angela M. (1) Cuzzuol,Geraldo R. F. (1) Martinez,Hermínia Emília Prieto (1) Novais,Roberto Ferreira (1) Rodrigues,Luciana Aparecida (1) Sacramento,Luis Vitor Silva do (1) Zaidan,Lilian B. P. (1) Mais... Palavra-chave Nutritional stress (2) " cerrado" vegetation (1) Inulin (1) Phosphate fractions (1) Phosphorus (1) Phosphorus deprivation (1) Plant growth (1) Underground reserve organ (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2008 (1) 2005 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Fructan production in Vernonia herbacea (Vell.) Rusby is related to adequate nitrogen supply and period of cultivation Rev. Bras. Bot. Cuzzuol,Geraldo R. F.; Carvalho,Maria Angela M.; Zaidan,Lilian B. P.. Previous studies showed that plants of Vernonia herbacea grown for one year under a limited nitrogen supply presented reduced growth and higher fructan content than plants treated with sufficient nitrogen supply. However, the total fructan production was similar in both plant groups due to the higher biomass of the underground reserve organ in nitrogen-sufficient (N-sufficient) plants. In the present study we aimed to evaluate if a stress growing condition under nitrogen-limited (N-limited) supply, following cultivation under N-sufficient supply would have a positive effect on fructan production. Plants cultivated during one year under N-sufficient supply (10.7 mmol L-1 N-NO3-) were separated in two groups. During the following six months, one group... Tipo: Info:eu-repo/semantics/article Palavras-chave: " cerrado" vegetation; Inulin; Nutritional stress; Plant growth; Underground reserve organ. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000100010 Phosphate forms in plant and their internal buffering in five soybean cultivars Rev. Bras. Ciênc. Solo Martinez,Hermínia Emília Prieto; Novais,Roberto Ferreira; Rodrigues,Luciana Aparecida; Sacramento,Luis Vitor Silva do. Differences among plants in their ability to support nutritional stress periods may be caused by a differential vacuole capacity of ion storage and release and may also depend on the intensity of nutrient re-translocation under such conditions. In five soybean cultivars, submitted to eight days of P deprivation, the dry matter production and the contents of three phosphorus (P) forms - inorganic (Pi), organic (Po), and acid-soluble total (Pts) of different plant organs were determined. Pi release velocity (RSPi) was estimated as the tangent to the equations obtained for Pi f(t) at the point t = 2 days (the mean point in the period of greatest Pi decrease), considering that -deltaPi/deltat expresses the rate of Pi release. The internal Pi buffering capacity... Tipo: Info:eu-repo/semantics/article Palavras-chave: Phosphorus; Phosphate fractions; Phosphorus deprivation; Nutritional stress. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832005000200010 Registros recuperados: 2 Primeira ... 1 ... Última

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