Abstract:
n the study, the effects of some plant growth hormones and plant activators on the rooting of Rootpac-40 and GF 677 almond clonal rootstock cuttings were defined. The annual Rootpac-40 and GF677 clonal almond (P. dulcis L.) rootstocks were studied in a growth room (22°C±1) in randomized blocks design with 4 replicates, and the plant growth regulators used were IBA (Indole-3-butyric acid), IAA (Indole-3-acetic acid), SA (Salicylic acid) and Messenger Gold (MG). In Rootpac-40, the highest live cutting quantity was observed in control (95.00%), and MG (85.50%) was placed statistically in the same group with control. The lowest amount of live cutting was observed in IAA (57.50%). In GF 677, the highest number of live cutting was observed in IBA (85.00%), which was followed by IAA (75.00%). The lowest number of live cutting was observed in control (50.00%) and MG (57.00%) practises. While the cutting diameter values ranged between 4.04 mm-6.29 mm in both rootstocks, the highest cutting diameter was observed in MG (6.29 mm), IAA (6.25 mm) and IBA (5.71 mm). The lowest cutting diameter on the other hand, was observed in the SA (4.04 mm). In conclusion, the number of live cuttings in Rootpac-40 was increased by MG, while in GF 677, IBA was the factor that increased the number. MG, IAA and IBA were created positive effects on the cutting diameter of both rootstocks.