Salt tolerance in mango (Mangifera indica L.) rootstocks.
Schmutz U., Lüdders P.
Author Affiliation: Fachgebiet Obstbau der Humboldt-Universität zu Berlin, Berlin, Germany.
Angewandte Botanik Berichte : 189-193
Abstract : The mango rootstocks 13-1 and Turpentine, shown to be salt-tolerance and salt-susceptible, respectively, in the field, were grown in controlled conditions with nutrient solution which was made increasingly saline from day 11 (15 mM NaCl added) to day 22 (120 mM NaCl added). Net CO2 assimilation was reduced by salinity to a similar extent in both rootstocks. However, root respiration of Turpentine was reduced as salinity was increased, whereas root respiration of 13-1 showed little change; thus, carbon gain was lower in Turpentine than in 13-1 at high salinity. DM production by the 2 rootstocks was similar. After 29 days of NaCl treatment, leaf Na and Cl concentrations were higher in 13-1 than in Turpentine.