Evaluation of Different Chemicals Response on Rooting Behavior of Olive (Olea europaea L.) Semi-Hardwood Cuttings
Evaluation of Different Chemicals Response on Rooting Behavior of Olive (Olea europaea L.) Semi-Hardwood Cuttings
Inam Ul Haq1*, Humara Umar1, Farah Umar2, Naeem Akhtar3 and Muhammad Jan4
ABSTRACT
Olive (Olea europaea L.) is an important emerging oil crop in Pakistan. To ensure the provision of true to type healthy saplings, there is a dire need to optimize the protocols for nursery production. In order to attain success in this sector, investigation was carried out to improve the rooting ability of a widely grown olive cv. “Arbequina”. This research aimed to enhance the rooting ability of semi-hardwood cuttings through application of different separate and combined concentrations of indole butyric acid (IBA), urea phosphate (UP) and paclobutrazol (PB). These chemicals were evaluated under seven treatments in controlled greenhouse environment and tested for different rooting parameters. The results obtained showed significant effect on rooting ability of the cuttings. The appealing results obtained at T6 (IBA+UP+PB) where maximum rooting 56.8% with average number of roots per cutting 4.4 and root length 4.3 cm was observed. This treatment also showed higher callusing 80.5%, sprouting 83.3% and survival rate 51.1% as compared to all other treatments. Among other treatments T5 (IBA+PB) and T4 (IBA+UP) are ranked second and third respectively in term of higher rooting ability. The minimum rooting was observed in T7 (UP+PB). The present study demonstrated the effect of combined treatment of IBA+UP+PB on stimulation of rooting and survival of cuttings compared with a treatment of IBA (T1) being conventionally used.
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