Developing propagation methodology for Leucosidea sericea, a species with cosmeceutical application using cuttings and seeds
Plant propagation plays an important role in the horticultural industry and it can be carried out using sexual (seeds) and asexual methods. Developing these methods is important in producing plants for commercial use if no information is available on small or large scale production. The aim of this study was to determine the best propagation methodology using seeds and cuttings with the focus on commercial production of the species. Germination responses of Leucosidea sericea seeds to smoking, soaking in cold water, soaking in hot water, and leaching, at five different temperature levels (10, 15, 20, 25 and 30°C) and their interactions were investigated. Cuttings were exposed to a combination of three different types of rooting hormones (IBA, Seradix no.1 and Seradix no.2), two cutting types (basal and tip), and four different growth media (50:50 sand and compost, 50:50 sand and plugmix, compost and sand). Results showed that smoke used to enhance the germination was better than all the other pre-sowing treatments. The optimum temperature for germinating L. sericea seeds was observed at 20°C followed by 15°C. The germination capacity of L. sericea seeds was enhanced further when pre-sowing treatments interacted with the temperature where 53% of the seeds germinated. The cutting treatments were not successful, even though various treatments were applied. Therefore, seeds are recommended as the best propagation methodology with germination percentages of 50-60%.
Sehlakgwe, P.F. and Prinsloo, G. (2018). Developing propagation methodology for Leucosidea sericea, a species with cosmeceutical application using cuttings and seeds. Acta Hortic. 1204, 255-262
plant propagation, Leucosidea sericea, IBA, Seradix, pre-sowing treatments