This current study was carried out on B41 grape rootstock
micropropagated in vitro at the General Commission for Scientific Agricultural
Research (GCSAR), Syria to study the effect of different concentrations of
sodium chloride on the multiplicati
on and rooting stages. The results showed
that the highest average of survival plants (98%), the number of new buds
(8.43) and plant length (8.58 cm) were obtained in the control treatment after 4
weeks from multiplication stage. The treatment with 50 mM of sodium chloride
led to reduce the multiplication rates with significant differences, while the
lowest plant multiplication had occurred with 100 mM of sodium chloride and
no survival plants were remained by the treatment with 150 mM of sodium
chloride during multiplication stage. The highest rooting rates (% 85.30), the
number of roots (4.67) and root length (6.28 cm) were also obtained in the
control treatment after 4 weeks from rooting stage. The treatment with 50 mM
of sodium chloride led to reduce the rooting process with significant
differences. The lowest rooting results were observed with 100 mM of sodium
chloride and no rooting rate was observed when plants were treated with 150
mM of sodium chloride.
