Effects of salinity on growth and organic solutes accumulation of Tabebuia aureaManso (Benth and Hook)

Abstract

Salinity is a problem that has increased annually and among the viable alternatives for the reintegration of saline areas to the productive system is the cultivation of tree species. This study aimed to evaluate the growth, dry matter distribution and organic solutes accumulation in Tabebuia aurea Manso (Benth and Hook) under salinity. The plants were grown in Hoagland solution with 0, 50, 100, 200 and 400 mM NaCl during 30 days distributed in a completely randomized design, with six replicates. The salinity affects growth and dry matter accumulation of Tabebuia aurea and promotes soluble sugar accumulation on the leaves and stem, and free amino acids in the roots, leaves and stems. Plants showed a sensibility to the salt levels used during the time they were exposed.

Keywords: Salt tolerance, osmotic adjustment, salt stress

African Journal of Biotechnology Vol. 12(13), pp. 1490-1494