| Autor: |
de Abreu CB; Centro de Ciências Agrárias, Ambientais e Biológicas, Campus Universitário de Cruz das Almas, Universidade Federal do Recôncavo da Bahia, Cruz das Almas, Bahia, 44380-000, Brazil., de O Ribeiro M; Centro de Ciências Agrárias, Ambientais e Biológicas, Campus Universitário de Cruz das Almas, Universidade Federal do Recôncavo da Bahia, Cruz das Almas, Bahia, 44380-000, Brazil., Pinho CS; Centro de Ciências Agrárias, Ambientais e Biológicas, Campus Universitário de Cruz das Almas, Universidade Federal do Recôncavo da Bahia, Cruz das Almas, Bahia, 44380-000, Brazil., Carneiro CN; Centro de Ciências Exatas e Tecnológicas, Campus Universitário de Cruz das Almas, Universidade Federal do Recôncavo da Bahia, Cruz das Almas, Bahia, 44380-000, Brazil., de Azevedo Neto AD; Centro de Ciências Exatas e Tecnológicas, Campus Universitário de Cruz das Almas, Universidade Federal do Recôncavo da Bahia, Cruz das Almas, Bahia, 44380-000, Brazil., de Souza MO; Centro de Ciências Exatas e Tecnológicas, Campus Universitário de Cruz das Almas, Universidade Federal do Recôncavo da Bahia, Cruz das Almas, Bahia, 44380-000, Brazil., de S Dias F; Universidade Federal da Bahia, Instituto de Ciências Tecnologia e Inovação, Campus Universitário de Camaçari, Camaçari, Bahia, 42809-000, Brazil. fsdias@ufba.br. |
| Abstrakt: |
The present work aimed to analyze the mineral nutrition of Physalis angulata L. under stress by aluminum in the nutrient solution. The treatments consisted of five different concentrations of aluminum in the nutrient solution (0, 0.04, 0.08, 0.12, and 0.16 mmol L -1 ) in the AlCl 3 form. The plants were exposed to Al for 30 days. Subsequently, nutritional and aluminum analyses were performed on plant tissue. The data were submitted to analysis of variance (p < 0.05), and, in case of significance, the regression study was performed as well as hierarchical cluster analysis (HCA) and principal component analysis (PCA) were used. The formation of four groups occurred, where we can observe the similarity and differences in the treatments between them. The separation of the treatments into groups reflected the heterogeneity of the treatments about the aluminum levels in the nutrient solution, evidencing its phytotoxicity level in Physalis angulata plants. Among the analyzed variables, P, K, Ca, Mg, Fe, Mo, and Zn were the most influential ones demonstrated by principal component analysis (PCA). The stress of 0.16 mmol L -1 of Al increased the phosphorus contents in the stems and roots and the potassium, copper, and molybdenum contents in all parts of the plants. In contrast, Al reduced the levels of calcium, magnesium, iron, and zinc in P. angulata plants. Iron being the micronutrient that showed the largest reduction, followed by zinc in the leaves. The highest levels of aluminum were found in the roots. |
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