Effect of Preconditioning Treatments and Auxins on the Rooting of Semi-Hardwood Cuttings of Olive Planted During Winter Under Mist Condition

Abstract

An experiment was conducted during winter to find the effect of girdling, etiolation and auxins i.e. IBA and NAA on rooting of semi- hardwood cuttings of olive cv. Leccino under mist. The experiment comprised of 13 treatments and was combinations of girdling, etiolation and auxins. The results indicated that the best rooting characteristics viz; highest percent rooted cuttings (53.33), number of primary roots (6.58) and secondary roots (8.53) and diameter (0.46 mm) were maximum with cuttings treated with IBA at 5000 ppm, where as the maximum primary root length (5.30 cm) and secondary root length (2.42) was recorded with the treatment girdling + IBA 4000 ppm + NAA 1000 ppm and IBA 4000 ppm, respectively. Regarding the shoot characteristics viz; plant height (14.59 cm) was recorded highest for the treatment IBA@ 4000 ppm which was at par with the treatment IBA @ 5000 ppm (14.26 cm). Highest plant diameter (2.40 mm), numbers of leaves (16.26) and leaf area (36.42 cm2) were highest for the treatment IBA @ 5000 ppm. Survival percentage of cuttings (71.57 %) was also highest in cuttings treated with IBA @ 5000 ppm. It is concluded that IBA at 5000 ppm was found to be the best treatment for propagation of olive through semi- hardwood cuttings during winter.

Effects of the Season on the Rooting Performance on the Local Olive Types of Northern Cyprus

“…The greatest average root length (65.51 mm) was obtained from the cuttings rooted in autumn (Table 3). This is consistent with the results obtained by Thakur et al (2016) reported the highest the maximum root length was determined with 5.30 cm. The same results were also determined in present research.…”

“…Considering the periods, autumn had the best performance with an average value of 45.87% in Table 2. This is consistent with the results obtained by Thakur et al (2016) reported the highest rooting (53.33%) was recorded in the cuttings with IBA at 5000 ppm found the best treatment for propagation of olive cuttings during winter period. This was similar to our study.…”

“…As can be inferred from Table 4, the greatest number of roots was observed in the control group with 17.08 roots in autumn period, it was followed by T5 type rooted (8.00 roots) in autumn and the lowest number of roots (1.25 roots) was observed in T3 type rooted in spring period. Likewise, in a study conducted by Thakur et al (2016) reported that the highest number of primary roots and secondary roots were found with 6.58, 8.53 respectively. The same results were also observed in present research.…”

“…Besides seed propagation, olive trees can also be propagated vegetatively from oleaster, nodule, foliated scions and sucker shoots (Ullah et al, 2012;Thakur et al, 2016;Güler et al, 2017;Dalla Rosa and Villa, 2018;Gül and İsfendiyaroğlu, 2019). When the proper techniques were employed, shoots and branches are considered as perfect production materials (Fabbri et al, 2004;Afzal et al, 2017).…”

Desempenho de substratos na capacidade de enraizamento de estacas de oliveiras

“…Rooting of semi-hardwood stem cuttings varies among cultivars (THAKUR et al 2016). In olive trees, auxin is a limiting factor in rooting (KURD et al 2010), with indolebutyric acid (IBA) being the most commonly used.…”