ISHS Acta Horticulturae 226: International Symposium on Propagation of Ornamental Plants
ROOTING OF HIBISCUS CUTTING IN WATER CULTURE |
| Authors: | L. Bertram, A. Skytt Andersen, P. Karlsen |
| Abstract:
The results which are presented in this report are the first from a project we designed to investigate the vegetative propagation of Hibiscus. Stock plants of six cultivars were grown under normal greenhouse conditions. A hydrophonic culture system was established in which the cuttings were rooted. Among the six cultivars a significant difference was found in the number of roots after 28 days. A significant increase of the fresh and dry weight of the cuttings during the rooting period was observed in all experiments. Shading of stock plants of two cultivars gave ambigous results, one experiment showed positive effects of shading on root formation, but this could not be verified later in the season. For all experiments, however a correlation to the total global irradiance was evident. The salt concentration in the nutrient solution was important for the rooting of the cuttings. For the well rooting cultivar 'Holiday' there was an optimum at 0.3 to 0.5 mS/cm2. | |
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