EFFECT OF TREATMENTS OF DIFFERENT DURATION WITH NACL ON GROWTH, DIFFERENTIATION AND ESTERASE-ACTIVITY IN EXCISED RADISH COTYLEDONS

Radish etiolated cotyledons were excised from the seed after 24 hours of imbibition and incubated for different times on filter paper satured with NaCl solutions or water. After the incubation of different times in NaCl, the cotyledons were thoroughly rinsed in water and grown in darkness on filter paper satured with distilled water. Continuous presence of NaCl is not a prerequisite for optimal growth. Several effects of the NaCl solutions are less intensive if the cotyledons are treated with NaCl for a relatively short time and then grown in water.