Answers are grounded in this paper and cite their sources.
A solution culture experiment was conducted in a greenhouse with two cacao genotypes (Catongo and Theobahia). Plants were subjected to seven aluminum (Al) concentrations and Al effects on growth, photosynthesis, and mineral content were assessed. Inter-genotypic differences for Fo, Fm and Fv fluorescences, as well as for Fv/Fm, were observed with increasing Al concentrations. There was a decreasing of Fo, Fm, Fv and Fv/Fm for the Catongo. Increasing Al concentration decreased photosynthetic rate, stomatal conductance and leaf transpiration rate, however, inter-genotypic differences in these parameters were not observed. The Al-treatments decreased content of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg) in different plant parts, with the exception of K content in stems of Theobahia and in leaves of both genotypes. Theobahia showed higher tolerance to Al phytotoxicity, manifested mainly in the higher levels of Al in the growth medium. Inter-genotypic differences were observed in the growth and mineral nutrition.
No takes yet. Share an insight, caveat, or question.
Ribeiro et al. (2013) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: