Abstract
AimsWe determined the reasons why in nutrient solution increasing Al concentrations >300 μ M inhibited shoot biomass production of Cedrela odorata L., Heliocarpus americanus L., and Tabebuia chrysantha (Jacq.) G. Nicholson while 300 μ M Al stimulated root biomass production of Tabebuia chrysantha.MethodsNutrient concentrations in plant tissue after a hydroponic growth experiment were determined.ResultsIncreasing Al concentrations significantly decreased Mg concentrations in leaves. Phosphorus concentrations in roots of C. odorata and T. chrysantha were significantly highest in the treatment with 300 μ M Al and correlated significantly with root biomass.ConclusionsShoot biomass production was likely inhibited by reduced Mg uptake, impairing photosynthesis. The stimulation of root growth at low Al concentrations can be possibly attributed to improved P uptake.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
