OLIVE CULTIVAR PROPAGATION BASED ON NEBULIZATION METHOD

The influence of IBA, NAA, and IAA acids on rooting percentage of olive green cuttings was studied by applying two concentrations in four terms, during three years (2007-2009) in Tirana olive research station. The cultivar chosen for this study was “I Bardhi Tiranes” (Olea europaea L). Seven treatments were tested: (i)Control (hydroalcoholic solution), (II) IAA 2000 ppm hydroalc. sol, (III) NAA 2000 ppm hydroalc. sol, (IV) IBA 2000 ppm hydroalc. sol, (V) IAA 5000 ppm hydroalc. sol, (VI) NAA 5000 ppm hydroalc. sol, (VII) IBA 5000 ppm hydroalc.sol. The breeding was carried out in four terms: (i) 5 March, (ii) 5 May, (iii) 5 September, (iv) 5 December. The highest rooting capacity resulted under the treatment of (iv) IBA 2000 ppm, 81.6% in May, and under the treatment (vii) IBA 5000 ppm 68.8% in March. The three hormones have displayed high rooting capacity under the treatment 5000 ppm, in March and December, while in May and September the treatments with 2000ppm. All the treatments with IBA, NAA and IAA, were distinguished both for the increase of rooting capacity and average number of roots. The treatments with Naphthyl acetic acid, (iii) and (vi), stimulated a higher root percentage compared to control and IAA. The effect of treatment (iii) NAA 2000 ppm was 55% in May, which is superior to the other three terms at 5000 ppm concentration. (ii)IAA 2000 ppm influence on the rooting was better than IAA 5000 ppm treatment (v) and the control, but worse compared to the effect of other acids. The first rooting period begins with spring awaking (bud’s differentiation) and culminates in May, which coincides to intensive vegetative growth and cambium activity.