Mechanisms of date palm salt tolerance Effect of salt tolerance on some chemical substance contents of leaf and root date palm and some vegetative characteristics

Abstract

This study was carried out as partial study to search the mechanisms of salt tolerance in date palm tree. The result shows the salinity in irrigation water as NaCl( 0 ,6 ,12 ,18 , 24 )dS/m was significant effects on some chemical substances (proline , carbohydrates and chlorophyll) and some vegetative characteristics (leaf length and root length). The salt irrigation water was a significant increase in proline content in leaf and root with salt concentration increase, the proline concentration at 24 ds/m reach (25 ,18.8)µg/g dry weight in leaf and root respectively , whereas there were no significant changing in carbohydrates and chlorophyll with salt concentrations increase tell 12 dS/m, thereafter decrease in this characteristics with increase the salt concentration, the carbohydrates concentration at 24 ds/m reach (33.5 ,21.9)mg/g dry weight in leaf and root respectively and chlorophyll was reach (2.1)mg/100g fresh weight, this matter was correspond with vegetable characteristics.