ISHS Acta Horticulturae 189: I International Symposium of the Research and Cultivation of Roses
ROOT REGENERATION OF ROSE PLANTS AS INFLUENCED BY APPLIED AUXINS |
| Author: | H.W.M. Fuchs |
| Abstract:
Root regeneration of rose plants was promoted by application of auxin in all experiments. Indolebutyric-acid (IBA) applied to root segments of Rosa multiflora 'Kanagawa' increased number of regenerated roots as well as root length. The best results were obtained with the highest concentrations (1 000 ppm). Addition of sucrose 5% to the solution enhanced the results. IBA or naphtalene acetic-acid (NAA) applied to roots of dormant 'Motrea' on rootstock R. canina 'Inermis' promoted root regeneration, while indole acetic acid (IAA) showed no promoting effect. Most effective was IBA in a concentration of 500 ppm. The promoting effect of IBA on root regenerating of dormant 'Sonia' on rootstock R. canina 'Inermis' was observed in a range of temperatures from 5 to 25°C. Optimum concentration depended on temperature: at the lowest temperature the highest IBA concentration was the most effective; at the higher temperature it was the lower concentration. | |
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