In this experiment compared the effects of support medium systems including bridges paper,
perlite, vermiculite With the half concentration of MS and bridge paper with full concentration and
With 60 and 75 g per liter sucrose for seed germination of four species of citrus, including Orange
Shiraz, large orange, mexican lime and rough lemon was examined. The results of the interaction
between the type of seed, of support systems medium culture and concentration of sucrose on seed
germination show The highest germination related to mexican lime in perlite medium culture and
bridge paper with half MS and with a concentration of 60 g/l sucrose was obtained. The lowest rate
germination for all seeds related to medium culture paper bridge with complete MS and 75 g/l sucrose
was observed.