This investigation was carried out during both 2013-2014 and 2014-2015 seasons to study the effect of pre-grafting insertion of the, Kalamata and Dolce, olive scion basis in growth regulator solution treatments, just before their cleft grafting onto the Chemlali seedling rootstocks. Different growth regulators and their combinations were used. The influence was evaluated through the response of grafting success percentage, determination of leaf some chemical constituents, as well as, the anatomical examination of scion-stock union zone. The obtained results exhibited that the high grafting success of grafted olive cvs. Kalamata and Dolce transplants as a result of the different tested growth regulator treatments were accompanied with obvious changes in some anatomical features of scion-stocks region i.e., thickness of periderm, Cortex, Vascular tissues (Xylem and Phloem) besides an increase in union zone thickness and cambium tissue accompanied by an increase in the formed vascular tissues. However, the best results in this concern was the treatment of IBA at 50 mg/L+kinetin at 5 mg/L followed by kinetin at 10 mg/L and IBA at 100 and 50 mg/L as compared with the other treatments and control |
