EFFECT OF GENOTYPE AND CUTTING TYPE ON THE VEGETATIVE PROPAGATION OF THE PINE HYBRID (PINUS-BRUTIA (10) X PINUS-HALEPENSIS (MILL))

Improved methods to propagate vegetatively selected individuals of the promising artificial pine hybrid Pinus brutia (Ten) x P halepensis (M ill) are required. Repeated spraying with 200 mg.l(-1) BA or one spray ing with 1 000 mg.l(-1) of the herbicide Arsenal on the stems of 4-yea r-old seedlings, resulted in the production of the largest possible nu mber of fascicle shoots. The fascicle shoots produced were taken as cu ttings and were tested for rooting. In the rooting experiments the eff ect of genotype, cutting type, cutting size and auxin treatment were i nvestigated. Genotype and cutting type proved to be the most crucial f actors for rooting and clones with high rootability.