Effects of Cutting Time and IBA Treatment on Rooting of Rhododendron Summer Cuttings Collected from Turkish Flora
Journal Title: Scholars Bulletin - Year 2017, Vol 3, Issue 12
Abstract
Abstract:This study was carried out to determine the possibilities of vegetative propagation of the widespread 5 Rhododendron species (R. ponticum L, R. luteum Sweet, R. smirnoviiTrautv, R.ungerniiTrautv, and R. caucasicum Pallas) in Turkey. The plant material was obtained as shoot tip cuttings from Black Sea Region flora at three times (June, July and August). The respective cutting materials were subjected to 5 Indole-3-butryic acid (IBA) doses (0, 4000, 8000, 12000 and 16000 ppm) and planted in acidic peat and perlite mixture under mist propagation in greenhouse condition. Sixty cuttings (20 cuttings with 3 replicates) were used for each treatment. Totally, 300 cuttings were used. Results showed that three rhododendron species (R. ponticum, R. luteum and R. smirnovii) were successfully rooted but the others (R. ungerni and R. caucasicum) were not. Only 16.000 ppm IBA gave the highest rooting rate (46.67%). The highest rooting rates were obtained in R. ponticum as 46.66 % from August cuttings, in R. luteum as38.33 % from June cuttings and R. smirnovii as13.33% from August cuttings. To conclude, when the cutting materials were obtained in summer season, their rooting rates were quite low in Rhododendron species, suggesting that when it is difficult to reach these plants in heavy winter conditions, it can be worked on summer cuttings even low rate of rooting. Keywords:Rhododendron, propagation, cutting, summer season.
Authors and Affiliations
B. Altun, H. Celik, S. Saglam, O. Eminagaoglu
Keywords
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