Aluminum accumulation in two Pfaffia glomerata genotypes and its growth effects

• Autor(a) principal: Maldaner,Joseila
• Data de Publicação: 2015
• Outros Autores: Nicoloso,Fernando Teixeira, Tabaldi,Luciane Almeri, Cargnelutti,Denise, Skrebsky,Etiane Caldeira, Rauber,Renata, Gonçalves,Jamile Fabbrin, Rossato,Liana Verônica
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Ciência Rural
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000601013
• topic: Brazilian Ginseng; acid soils; Al toxicity.

Aluminum (Al) toxicity is a limiting factor for crop production in acid soils, which cover approximately 60% of the Brazilian territory. This study aimed to evaluate the effects of Al on growth and tissue Al concentration of two Pfaffia glomerata accessions (BRA and JB/UFSM). Plantlets were grown in a hydroponic system with five Al concentrations (0, 50, 100, 150 and 200mg L-1) for 7 days. Most of the evaluated parameters presented significant interaction between both P. glomerata accessions and Al levels in nutrient solution and, in general, Al treatments negatively affected plant growth, especially roots. Moreover, BRA accession showed higher Al accumulation in its tissues than JB/UFSM and, consequently in BRA accession the growth was impaired substantially. Furthermore, the results suggest that, between P. glomerata accessions studied, BRA is less appropriated for medicinal uses when grown in soils with high Al levels, due to the higher accumulation of tissue Al content.