Effect of different hormone doses on rooting of Berberis thunbergii “Atropurpurea Nana” cuttings

Abstract

Berberis thunbergii 'Atropurpurea Nana', indigenous to Japan, is highly effective in landscaping applications, especially in groups due to its straight form and flamboyant burgundy leaves. It is also used with success in impermeable fences since it can be pruned in addition to its visual properties. In this study, it is aimed to research the rooting of softwood cuttings of Berberis thunbergii 'Atropurpurea Nana', which has aesthetic and functional properties, and to encourage the use in landscape architecture planting designs. The study was conducted under greenhouse conditions (air temperature at 20±2 ºC, rooting table temperature at 25±2 ºC, humidity at 70±2 %) in perlite medium. The cuttings were treated with IBA, IAA and NAA hormones in different doses (1000, 3000, 5000 and 8000 ppm) and control (hormone-free). Rooting percentage, root length and root count were determined. Results shown that cuttings treated with 3000 ppm of NAA performed significantly the highest rooting percentage (85%) and better root length (7,59 cm) and the number of roots (8,28 roots).

Keywords

• berberis thunbergi “atropurpurea nana”
• cutting propagation
• auxin
• berberis thunbergi “atropurpurea nana”
• çelikle üretim
• oksin