The Effect of Different Applications on Rooting of Rhododendron spp Cuttings

Öz

This research was carried out to determine the effects of different cutting taking periods, IBA doses and different rooting environments on the rooting rates (%) of Turkish natural rhododendron species (R. ponticum L., R. luteum Sweet, R. caucasicum Pallas, R. simirnovii Trautv and R. ungernii Trautv) cuttings. The shoot-tip-cuttings taken at the end of August, the first half of October and the second half of November were subjected to 0, 2000 ppm, 4000 ppm and 8000 ppm doses of Indole-3-Butyric Acid (IBA). They were then planted in rooting media in bottom heated pans and under misting irrigation. Acidic peat+perlite (3:1) and perlite medium were used as rooting media. As a result of the research, although it varies from year to year, the highest rooting rates were found in R. ponticum, R. smirnovii and R. ungernii species in acidic peat + perlite (3:1) medium (75.83%, 59.17% and 25%, respectively). R. luteum and R. caucasicum species were found to be in perlite environment (64.17% and 29.17%, respectively). Rooting levels of rhododendron cuttings; It was determined that it varies depending on the species, cutting period, rooting environment, IBA dose used and years.

Anahtar Kelimeler

• Rhododendron
• Cutting
• Rooting medium
• IBA

Orman Gülü (Rhododendron ssp.) Çeliklerinin Köklenmeleri Üzerine Farklı Uygulamaların Etkileri

Öz

Bu araştırma, Türkiye doğal orman gülü türlerinin (Rhododednron ponticum L., R. luteum Sweet, R. caucasicum Pallas, R. simirnovii Trautv ve R. ungernii Trautv) çeliklerinin köklenme oranları (%) üzerine farklı çelik alma dönemi, farklı IBA dozlarının ve köklendirme ortamlarının etkilerini belirlemek amacıyla yürütülmüştür. Ağustos ayının sonu, Ekim ayının ilk yarısı ve Kasım ayının ikinci yarısında alınan tepe çelikleri, İndol-3-Bütirik Asit (IBA)’in 0, 2000 ppm, 4000 ppm ve 8000 ppm dozlarına tabi tutularak alttan ısıtmalı tavalarda ve mistleme sulama altında köklendirme ortamlarına dikilmişlerdir. Köklendirme ortamı olarak asidik torf+perlit (3:1) ve perlit ortamı kullanılmıştır. Araştırma sonucunda yıllara göre değişmekle beraber en yüksek köklenme oranları R. ponticum, R. smirnovii ve R. ungernii türlerinde asidik torf+perlit (3:1) ortamında (sırasıyla % 75.83, %59.17 ve %25), R. luteum ve R. caucasicum türlerinde ise perlit ortamında (sırasıyla %64.17 ve %29.17) olduğu tespit edilmiştir. Orman gülü çeliklerinin köklenme seviyelerinin; türe, çelik alma dönemine, köklenme ortamına, kullanılan IBA dozuna ve yıllara bağlı olarak değişkenlik gösterdiği belirlenmiştir.

Anahtar Kelimeler

• Rhododendron
• Çelik
• Köklendirme ortamı
• IBA

Kaynakça

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