Data/hora: 11/06/2024 04:34:13

Provedor de dados: 	90	
País: 	Brazil	
Título: 	Phloem mobility of Boron in two eucalypt clones	
Autores: 	Mattiello,Edson Marcio; Ruiz,Hugo Alberto; Silva,Ivo Ribeiro da; Sarkis,Jorge Eduardo Souza; Neves,Júlio César Lima; Pucci,Murilo Marques.	
Data: 	2009-12-01	
Ano: 	2009	
Palavras-chave: 	B translocation; Nutritional deficiency; Boron isotope; 10B:11B ratio.	
Resumo: 	Boron deficiency causes large productivity losses in eucalypt stands in extensive areas of the Brazilian Cerrado region, thus understanding B mobility is a key step in selecting genetic materials that will better withstand B limitation. Thus, in this study B mobility was evaluated in two eucalypt clones (68 and 129), under B sufficiency or B deficiency, after foliar application of the 10B isotope tracer to a single mature leaf. Samples of young tissue, mature leaves and roots were collected 0, 1, 5, 12 and 17 days after 10B application. The 10B:11B isotope ratio was determined by HR-ICP-MS. Samples of leaves and xylem sap were collected for the determination of soluble sugars and polyalcohols by ion chromatography. Boron was translocated within eucalypt. Translocation of foliar-applied 10B to the young tissues, mature leaves and roots was higher in clone 129 than in 68. Seventeen days after 10B application to a single mature leaf, between 14 and 18 % of B in the young tissue was originated from foliar B application. In plants with adequate B supply the element was not translocated out of the labeled leaf.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000600018	
Editor: 	Sociedade Brasileira de Ciência do Solo	
Relação: 	10.1590/S0100-06832009000600018	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Ciência do Solo  v.33 n.6 2009	
Fonte: 	info:eu-repo/semantics/openAccess