Macronutrients accumulation and growth of pineapple cultivars submitted to aluminum stress

作者：Mota Mauro F C^*; Pegoraro Rodinei F; Batista Paulo S C; Pinto Valeria de O; Maia Victor M; da Silva Deivisson F

来源：Revista Brasileira de Engenharia Agricola e Ambiental, 2016, 20(11): 978-983.

DOI：10.1590/1807-1929/agriambi.v20n11p978-983

• Al
• toxicity
• tolerance
• nutrient solution

The objective was to determine the growth and accumulation of macronutrients of two pineapple cultivars submitted to different concentrations of aluminum (Al). For this, a study was conducted in plastic pots containing 4 L of nutrient solution, in a randomized block design, in a 2 x 5 factorial scheme, corresponding to two pineapple cultivars ('IAC Fantastico' and 'Vitoria') and five Al concentrations (0, 21.6, 43.2, 64.8 and 86.4 mg of Al plant(-1)), with four replicates. The following variables were evaluated: root length, dry matter of root, stem and leaf, stem diameter, number of leaves, chlorophyll content and accumulation of macronutrients at 60 days after treatment. The cv. 'Vitoria' showed a linear decrease in chlorophyll content, root dry matter, root length and accumulation of N, P, K, Ca and Mg in most plant components promoted by the increase of Al concentration in the nutrient solution. The cv. 'IAC Fantastico' had lower total dry matter, stem dry matter, stem diameter and accumulation of N, Ca and Mg. However, the evaluated characteristics were not influenced by the increase of Al concentration, showing greater tolerance of this cultivar to Al in nutrient solution.

• 出版日期2016-11